Hi welcome to everyone's favorite segment Mailbag. Let's get into it. Thank you very much Far Software Services. Got one from Australia Willoughby here in uh, Sydney.

no wackers so it's pretty decently heavy so I don't know what on earth is in there. Oh God. Cats Cat stamps. I hate cats.

I've just lost a thousand subscribers. Yes, the most subs subscribers I've ever lost is when I said I hate cats or I made a bad cat joke once lost thousands of subscribers. Anyway, Anyhow, so let's have a squiz got a note, thank you very much. Um, oh, it's a bunch of like random old stuff.

Where's all the weight? Where's all the weight? Oh wow there. Um, what are they? They're like. um oh, they're they're big stud diodes. Are they or something? I don't know.

They've got like a wire coming off them, which doesn't seem they're like a big stud something or other. Another one, I assume it's a big stud. Die whoa man. look at the size of that.

got some really big ass electrical. None of this electronics rubbish and electrical stuff. Wow. they've got to be like, you know, massive diodes or something.

I don't know. there could be something else, but uh, that's useful. Jesus, it's videos full of studs. Thank you very much Robert.

I thought you might like this mailbag Monday for these as I've not seen any old-school high-power electronics components on there. These were spares for an 80 kva ferro resonant uh, inverter? they're They're interesting. The Pharaoh are resonant ones. They still a thing.

I think they're still a specialized thing. I know a company here in Sydney they used to make a Ferro resonant. Uh, well. well.

Ferro resident power supplies. They're like Ultra. I think one of the things with them is that they're ultra reliable, Aren't they? The part numbers I suspect were specific to the equipment they were made for. There was an ongoing issue with the Lcrs becoming leaky, seemingly due to moisture ingress through the ceramic to the metal seal.

That's interesting, Uh, which could show some signs of corrosion. Probably not helped by the unit being very close to the salty era of Botany Bay. Yeah, hung onto these for years thinking why not make something that gives me an excuse to use them? It's hard to find enough time to to mow the grass, so the decades have just rolled by. Yeah, I've still got stuff in component drawers since when I was a kid, So yeah I go.

I'll see if we can find something on here, but I can see like 400 amps, 1500 volts is it? Wow. Show some up closes. So Rob sent in some awesome power diodes and uh, Scr's here and just take a look at these beasts. I mean they're just absolutely enormous.

This is a this would be like a shocky diode. um Sc like. you look up the part numbers for these and uh, 45th Week 1978. so ancient stuff.

but of course you know not be nothing wrong with it. It'd still work. Um, but they're absolute beasts. These are, uh, like stud, uh, diodes? Uh, they call them or they're You know, there's other packages like, uh, do8, uh, packages like these ones smaller ones.

but yeah, it's It's just absolutely enormous, so that it probably is that like 1300. The part numbers usually give away the current, uh, and the voltage rating. so that that could be 1300 amps. I mean, just that kind of beefiness.

Yeah, I can picture that being 1300 amps and uh, d30? Well, it was only 30 volts. I doubt it. But uh. anyway.

yeah, that's got to be a uh diode. That would be a shocky diode. and this would be the Scr And this is what uh, Rob was talking about. Uh, water ingress because this is a ceramic uh top on it and it'll get water ingress.

Of course this is the uh gate pin for it and it's got another wire coming off here. Um, I presume that th just go into there that's just uh, tapping off like a voltage. uh, sense line like right here. So they're just, uh, you know, taking into account the loss on the cable here so they can measure right across the diode itself thing.

Anyway, yeah, this would definitely be the gate of the Scr, the silicon controlled rectifier, and once again, a big stud package. Um, yeah, you look up those numbers and you can't get anything. uh for it. But yeah, get water ingress into there.

It's just a manufacturing uh thing. and then it just creeps in along the internal wiring through the ceramic. You get penetration in there and well, that can, yeah, eventually ruin your day. This one here.

you recognize the symbol ir International Rectifier for the win. Thank you very much. Um, yeah, that's another uh Scr there and you can see they've actually got. Oh, you can just note the Scr symbol on there and this is probably the closest example we've got to one that we can potentially know, uh, the specs for.

Anyway, once again, International Rectifier and it's got the Diode symbol instead of the Scr symbol this time. But bloody reflections are terrible on this. But you notice it's got 600 150 and you can actually still buy these. This is like a Do8 uh package and date code: 42 week 1988 Made in Mexico.

Thank you very much. Hi to all my Mexican viewers. Do they still make you know Semis in Mexico? I don't know. Leave it in the comments.

Anyway, this would be 600 amps and is that one? is that 150? I think that's 150 volt rating. So big 600 amp Schottky Diode. What a beast. And you can just see the uh ceramic isolation around there.

and sorry, but I'm not going for the mailbag. I'm not going to get out of Dremel. and uh, try and crack open one of these. I'm not.

even. You know they'd be fully potted inside. I'm not sure you'd actually, uh, see anything you'd have to do like a proper cross-section or something like that. And then you've got these bad boys.

Here you go: These are actually stamped are 400 amps, 150 volts. Thank you very much. Lousy. 150 volts.

Jeez. So thank you very much Rob for sending these in. Absolutely fascinating. If you do have uh, you know exactly like a data sheet for any of these at Bad Boys, then please leave it in the comments.

But just look at the size of that conductor. That's just insane. It's just braid. Enormous.

Anyway, these are like a little runtime there, but I'm sure there's viewers out there will just go. Oh, these are just little runty ones. You know? I work with Big Man once workbench of the week time you saw it in the background there. Thank you very much Lewis from uh.

Brussels in Belgium Hi to all my Belgian viewers. So let's have a look. It's better to do the Dave Head like this. I think it just you know it's It's just easier than the physical screen.

Anyway, we have an editing desk over here. Oh, dual rock and jewel webcams there. I've got the Yamaha speakers so it looks like he does some mixing. That's one of those mixing uh, desk thingies console thingies isn't it? And that there looks like the same camcorder I'm using that looks like the Nx80? Uh, that's my main uh camcorder.

So we have rode shoddy on the top. we've got a stereoscopic microphone, we've got the good old Heiko, uh, triple Eight, uh, and a bunch of Ryegol. Yeah, this looks looks like Ryegol gear for everything. Maybe you've got a package deal on everything here.

So yeah, we've got the uh, the meter, the power supply, the function, jan, the scope and the signal analyzer as well. Reflow oven down here. Um, and it looks like a 3d printer's galore. And as Cnc down the bottom, there I got another.

and there's another shot of it. So yeah, there you go. That's uh, quite neat and tidy. very uh, comprehensive.

and uh yeah. I guess do multiple. It's very important if you like. If you're doing lots of 3d printing.

yeah, you have multiple ones and you're just like or you have them like look and maybe set up with like pre-set up with like different filaments and pre-set up differently. So it depends on your requirements and stuff like that. 3d printers are like throwaway price these days, aren't they? Um, but yeah. Anyway, there you go.

Neat. thank you very much Lewis and yes, missed all those uh tubs at the top there. Neat. So that is a nice little setup.

Got some uh, pelican cases down here as well. So yeah, that's excellent. Looks like yeah, custom shelving. by the looks of it.

that's a really nice solution. I like that. Neat and tidy, a very efficient use of space. Very comprehensive beauty.

I did open this one well, partly because it didn't have male bag on it. Po Box 7949 nor West New South Wales. You can still use Balkan Hills, but Norwest is now officially a suburb. So yeah, Northwest New South Wales 2153 Australia not Austria.

but you've got to put mailbag on there. Otherwise, like I said, get other stuff delivered to the main thing. So anyway, you probably saw that. Um, all the Amiga fanboys.

Check it out. The Amiga Addict First of January 2021. They're still producing this well. Doesn't that look schmick? Don't copy that floppy.

The peak Amiga years of software piracy remembered inside. This is great for all you. There's obviously a market out there and there's still ads paying for it. Yeah, yeah.

pick up a Pixel. so Super pays them. Uh, to make it the ads in here, I probably still make it viable, but that's that's very glossy. We'll have a quick squeeze.

But yeah, I'm not an Amiga fanboy myself. I've done a video on Amiga, but sadly, that was all corroded wasn't it? It was like horrible. But geez, that's a that's a nice bit of work. Thank you very much.

There's no there's no note with that. They just sent me an Amiga at it. I love it. Britain's best-selling Active magazine for American users.

I guess there's a whole bunch of them that are like non-active or not as well Selling? Is this? Are there others like I didn't Is there a sustainable market for like more than one? Um. Anyway, Oh, issue number one. I just noticed. So yeah, because selling.

Oh, come on, come on. the marketing wank is strong with this one. issue number one already. and then they haven't even sold them because well, maybe I don't know.

Maybe they did a kickstarter or something like that. and maybe they already got the like the pre-sales So therefore they could then edit the front cover to say Britain's best-selling Active Magazine for Amiga users. Um, love it. Anyway, What? No cover disk? Ask your news agent.

They'll probably say it's 2021. What did you expect? Um, for those? Uh, Seppo's out there, You yanks? Uh, you probably don't know what a news agent is. Um, yeah. it's a place where like you buy magazines.

I believe it's a strange concept in Yankee land. Huge six page interview with ex-chief designer engineer at Commodore. Legendary David Haney. Um, I don't think that's David.

Doesn't seem uh, old enough, but uh. let's have a squares, meet the addicts and there you go anyway. I won't go through the whole thing, but uh yeah, that's that's very cool. Oh there he is.

Oh that's a Amiga Bill. Apparently there you go. Exclusive interview with community front man, Amiga Bill. Not to be missed.

Beautiful. I assume he's got a youtube channel somewhere. Welcome to the Amiga scene. Amiga Culture and I love it.

Pulp Fiction. Anyway, Amiga News? Well this is like there you go. There's the interview, but uh, no, I won't spoil it for you. If you want it, Um, go buy the magazine.

Support them. If you're an Amiga fan boy, go for it. Wow how the Amiga helped kill the arcade. Wow.

Terrific. No, I never had an Amiga when I was a kid. No, my first uh, machine was a Tandy 1000 because you know we couldn't afford anything. I had to just hang out at the shops.

and yeah, I did play around with the Amigas at the shops, but uh, that was about it so I couldn't afford it. But anyway, oh well done. Well done Everyone that's cool like it. Thumbs up.

Link down below this next one I am guilty of uh, opening of and even uh, tweeting a photos of it. Um, because yeah, it's not a mailbag thing and um, I didn't know that. I don't think I knew they were sending this to me so I was wondering what it was anyway. comes from the Ieee, the Institute of Electrical and Electronic Engineers, which I am a member of and Ta-da look what they sent me because I have very recently levelled up.

I am now. Check it out. Isn't that shiny? Get reflections off the studio lights. I am now a senior member of the Ieee.

Look at that. Ah Schmick ass. It's not. Um, yeah, it's just veneer wood.

It's not. You know, it's not solid or anything like that, but that's pretty spiffy. So there you go. Let's go straight to the pool room.

I am pleased to enclose this plaque celebrating your recent elevation as a senior Member of the Ieee. In receiving this special honor, you are joining a select few. less than 10 of our membership achieves this level of professional recognition. Please accept my personal congratulations.

Thank you very much. Apparently I get extra benefits and I like learn the secret Ieee Secret Squirrel handshake probably. I guess that instructions come in the next letter I guess. Thank you very much.

A name I won't try and pronounce because I'll just screw that up completely. Given that the Eev blog lab is the pool room. Um, yeah, it's going straight to the pool room I guess. Ah, oh I don't want to cover up Mr.

Fusion. Oh oh, look at that. Ah fits. Oh, you probably can't see that off camera, but beauty.

Hi to all my viewers in Canada. And thank you very much to uh. Cyborg Systems Cyborg as in S I Borg Systems get it. Anyway, Cool Ontario Canada.

Been to Canada. Love it. It's one of my favorite destinations and we have. Oh look at this we have Is this one.

Uh, I don't have Lcr. It's a new Lcr meter. This, it's a tweezer Lcr meter. which is awesome because I have that's interesting.

They got like a micro Usb with easy hooks. Is that what? What's going on there? Not sure the deal is there. Anyway, this is very cool. So this is the Lcr reader so I won't be doing well.

Oh, blue and yellow. Para gopara. Australians will know what I'm talking about. All those in Sydney you'll know what I'm talking about.

So does that automatically turn on? No. There's no battery in it. Oh oh, it just beeped. Version 1.44 There we go.

Look at that. Beautiful. Don't know about the color scheme. It's a red and blue.

That's the European. Uh, rubbish. isn't it? Instead of red and black? So I've actually got down here. I've got like four different.

This might make five, I'm not sure. Uh, different types of tweezer Lcr meters. So please leave a thumbs up and a comment down below. If you want me and want me to do like a shootout.

Oh there it is. Oh, that's interesting. Check it out. I assume we're in auto mode.

It's showing inductance instead of resistance. I would have expected to show up resistance when I just short the probes out like that. Oh, it gives the series resistance 0.02 but it thinks the primary thing is an inductor whereas the primary thing is a resistor. Hold on to your hat.

It's an oscilloscope as well. They're trying to be a jack of all trades. Look at that little waveform like I know, just stick to one thing. I mean, I know you get it as a bonus, but uh, you know.

Yeah, no. Just give me a nice, robust, solid Lcr meter. I don't care about seeing waveforms, so I'll try and make this very brief. Made in Canada? Excellent.

Um. Lcr Reader: Npi That's not to be confused with the other one which is made in Canada, isn't it? Um. Anyway, it's got bluetooth apparently 0.1 Basic accuracy. Oscilloscope grows, signal generator grown, Supercap testing great.

Uh, but you know it's designed like because it's got the tweezers. like it's not really designed for. You know, it's designed for doing Sm D parts and that should be it. Still don't get what this is.

detector short turns in transformers and inductors, but it's got it. It's got a oh, that's one of those bi-directional uh, micro Usb thingies, so it does go up to a hundred kilohertz. A Very nice because that's the standard Esr uh, test frequency. so that's brilliant.

Um, you know the display looks nice. You've got your primary uh display, your secondary display, your test frequency, and your uh configuration. uh, series or parallel or whatnot. Oh, then you've got a menu uh, chart as well.

Geez, nice. Like lots of functionality built into this all in one digital tweezers and you get the whole manual as well. Terrific. So here's some of your specs.

just very briefly. I won't go over them, but resistance? you know, in the order of like a 0.1 on uh, the middle ranges goes down to 1 million with 0.5 percent accuracy. You know? Very nice. Very nice 10 ohm range.

I love it. Uh, capacitance. Yeah, India like down to as low as point one percent. You know, of course up the higher ones, you know you're going to get your three percent, your five percent.

you're ten percent for your more 40 millifarad range. And that's you know, Quite acceptable. So yeah, specs look pretty decent and supposed to come with a Nist calibration certificate and it looks like, well, it's got a calibration certificate. Doesn't say anything about Nist traceability, does it? No, it doesn't.

Anyway, that's what they advertised, I believe. Oh, it does have bluetooth data acquisition, so that could be very nice. Like if you're uh, tweezering away testing you know, lots of different, uh, parts in production like you've got them all lined up and you've been in them or something like that. then uh yeah.

like you could actually log all those values and uh, that's you know you can get some stats on that. That's pretty terrific. anyway. I um, I don't like the color.

it kind of looks like toy like. but you know. Anyway, that's um, nice updating. it does.

Beep beep beep beep every time it does a sample. but uh, that looks like it works well and now we're going to the menu anyway. I won't go through the whole thing, so most of the time you're just going to leave it in auto mode and Bob's your uncle. A little bit hard to do my reference cap, but uh, there we go.

Oh yeah, she's pretty much bang on nice. Can you ask for better than that if I try and measure my 10 milliamp current shunt resistor? Yeah, it's once again, it hasn't detected it as a resistor as a primary. Um, but it's 0.03 It was 0.25 before, so that looks pretty close to bang on if I actually just manually zero that out with uh, my Mach One eyeball almost bang on the least significant digit for the 10 ohm resistor on there. Oh, that's nice.

Now it is actually detecting the resistor as the uh primary. so that's that is sweet as hang on, there's something going on here. Look, I I think I pushed the button. I did something and I put it into the manual range.

Okay, oh, it looks like oh, this is actually a joystick I think because look, yeah, I can. Yep, impedance capacitance with Esr. Yep, there we go. We're in manual resistance mode now, so that's pretty cool.

Put the probes together. Um, I can physically feel them going together. Are these contacts? no good. What? Oh, there we go.

Now it's doing it. I think it's got a dicky contact somewhere like I'm putting pressure on that that is definitely closed and it's just reading my fingers. There's no metal to metal contact there. I'm square and I squeeze it really hard and it comes on.

What the heck are these like? Is this something? I mean the contacts? Look the gold plated. They look pretty decent. Um, yeah. it's brand new out of the box so I wouldn't expect there to be any issues there.

Is it like further up the chain in here because these I think these will be removable Won't they? Oh no, no, you gotta. You probably gotta unscrew it, uh to get them out. Not sure what the deal is there, but that is a bit concerning though. There we go.

That works. a treat. So if I put a really hold them in like that, no there we go. Nah.

see, Look if we go like that. but no, no. Once again, yeah, it's contacting like I'm physically putting force on that and I have to really have to apply pressure. And then it goes.

Yep, but berko because we're shorting it out. Hmm. Interesting is there's some sort of contact issue somewhere. and I can't believe it's the gold-plated tips.

There's your tips. It doesn't seem to be anything seriously wrong there. Surely that's good enough. Oh no no no, you can.

kind of. Can you see a little bit of wear on them? Perhaps when I put those together, I have to apply a huge amount of force to get that to actually measure a contact. Hmm, not good. Oh, we actually got a bluetooth dongly thing in it.

I assume that's a bluetooth receiver because it's well, it's blue. Okay, and inside, there we go. No, I was never looks like I was never going to be able to pull that out. Pull the rabbit out of the hat there.

We've got a flat flex going all the way down, so that's just like a holder. so you unscrew that. And yeah, you can exchange the pros by the looks of it. but they've got flat flex going down into there.

You can see the Lipo battery on the bottom. So yeah, I'll try and get the rest out. We're in. Oh, got a relay? Got a real fair income relay in there? Wow.

I didn't expect that. Oh, the bluetooth module's just flapping around in the breeze. there. There you go.

got ourselves an Atmel for all you Atmel fanboys, and uh, I won't go into a detailed teardown or analysis of this thing. But uh, obviously we've got some. I don't can't read those numbers from here, but they're probably uh, like input, mux in or something like that. That's probably the Adc, because I don't think uh, with this kind of precision you, you wouldn't probably wouldn't be using the intel, uh, the internal uh Adc on your micro there.

Um, and yeah, I'm not sure what. uh, bluetooth module that is, but it's just off the shelf and ah, there's nothing else special. but yeah, like they've wired theirs on. Look, they're just like it's kind.

It's almost like an afterthought, really. The uh, bluetooth module on that, So that's a bit disappointing. But uh. anyway, as long as it does the business, bob's your uncle, no worries.

And uh, yeah, there we go. There's our little flat flex for both. uh, it inputs. So apart from the bluetooth module flattened around them breeze.

That's pretty neat and tidy and dull. Yeah, of course. Um, I forgot that this would have a Usb port on the thing and it looks like you can actually use it to. um, do some testing as well.

So what does it not have? the regular data interface? Um, that's kind of weird because I assume that's you know, a regular Usb and that's how you do your, uh, firmware updating, but I don't know remains to be seen. Anyway, there you go. That is. the Lcr reader all in one digital multimeter, tweezers armed a a very, very quick look.

I can't give you any uh, verdict on that unless I compare it with the others and do a full review. but it looks like it's probably going to do the business. Um, just maybe a contact issue there. Yep, still doing it even after I put it back together anyway.

Matey Canada linked down below. Check it out! Hi to all my viewers in Hong Kong which is not China Hong Kong. Uh, thank you very much to uh for nursey uh finrissi I forget how I pronounce how you're supposed to pronounce the name you. Obviously you've heard that name before because I've reviewed a couple of their stuff.

So uh, you're probably. They're probably getting multiple sucks of the Sav here. Although I guess is this the first time they sent something in the mailbag? Asian countries do like to, uh, cover their boxes in tape. Ah, don't brown tape.

It's always brown. It's always brown tight. They just like so you can't just like slice these things open. It's just like they're a real pain to open.

So bugger it. This one's quite big. Their other uh products were quite small. so oh yeah, it's small.

Oh what? Oh oh, I got two. Like a bonus, we got two. We're having multiple sucks of the saving the one email and oh, this is good. I can reuse the bubble wrap.

Fantastic. Oh, that's handy. thank you very much. This is oddly satisfying.

sealed for our own protection. comes in a nice looking case. Let's have a look. what do we got? Oh, it's just got more.

Oh wow. This is a, uh, this is a power supply. Oh cool. Bananas.

Okay, so 70 watts in? ah, it's got a Usb power delivery. I'm not, um, sold on the uh, sort of like chrome looking buttons and knob and stuff like that. but you know anyway and it's got a little fan on the back so it's up to well. it's got 70 watts on here.

Um, so Obvi, You know it's obviously not that linear rubbish. It's a switching uh supply. so that comes in a little case. What do we got here? No, there's no like a fursy branding on it or anything like that.

Yep, this is a scope. Got some probes and another scope. Yeah, I've already looked at two thirsty scopes, haven't I? It's 110 megahertz. and yeah, the previous ones.

There's a little rubber baby buggy bumper on it. Uh, previous one left a bit to be uh, desired. in terms of uh, its uh, performance. It was like, okay, up to 20 megahertz and it didn't work up to its claimed 100 megahertz.

Oh, that's a joystick. I thought that was a button. No, it's a little, uh, little nipple nipple joystick. so we'll switch that on.

So there it is. Boots up quick and um, we're in. So yeah, once again, this is not something. Maybe we'll do a quick two minute teardown in this, but this is not something that I can review in the mailbag.

Well, it turns out that uh, Fersi have entered the realm of Rd tech who are the current uh leaders for those little power supply modules. I've done quite a few videos on those and yeah, they've They sort of like pioneered the field. Really, Fersi, this is their like standalone uh product, but they also have little modules like the Rd Tech ones and this one. uh, you can get on Aliexpress for like 36 bucks.

That's not its normal price, it's about 60. it's like 40 off or something. Um, but that's just insane. It's absolutely insane.

Anyway, Uh, you know it's very similar to the Rd Tech uh ones in that it's a boost uh, converter. so I think when we take it apart, we'll probably just see like this is probably just their panel version. Uh, you can probably just buy this as the panel and then it will have, uh, the power, uh stuff in the back of it. Um, so yeah, I think they might just, uh, sell the module itself anyway.

Um, yeah. like this. Very similar to the Rd tech uh ones we're talking. um, it's just a buck uh converter this particular one.

So it's not a sepik type converter that can do boost and buck so you can't put uh, like power this from like a five volt Usb pack or five volt external in and then expect to get like in this case. it's rated for 0 to 60 volts output. You can only get lower than what you put in. so it's rated for a 6 volt to 70 volt input or Usb power delivery presumably and a 0 to 60 volt out at zero to six amps.

So um, yeah, it's quite the Bcna ripple is quite high. it's 100 millivolts. Um, but uh, the display is going to have resolution of one milliamp and 10 millivolts are current is half a percent. Uh, the accuracy of the voltage is about 0.3 so you know it's like just one of these little cheap power supply modules.

Let's take it apart because unfortunately I don't. my uh, Usb power delivery uh, brick is missing in action. So yeah, we'll have to either power from an external supply. I won't be able to test that now.

I liked how they used the uh gold brass uh screws for the front and these ones, um, the cheaper ones for the back. Uh, they did that for looks obviously. so somebody's thinking, would it be nice to get like some nice alloy uh, socket caps or something. You know that would have been sweet, make it look a bit jazzy, but it's already a bit how you doing looking with the buttons? I don't like them yet.

No, don't know. I was completely wrong about the Uh module thing. but they do actually sell a little module based versions of this anyway. Um yeah, this is custom designed for this case so you can see the output uh, banana plugs directly.

uh, soldered onto the board. looks a bit crusty. burger doesn't it? Um, not the best thing going and I don't even want to know what brand caps those are. they'll be nothing special.

Let me tell you, for this this price point, geez, you know you're not asking much. Um, but these offer all these types of modules now. just offer incredible uh, bang per buck in terms of like getting at least a good selection of power supplies for your lab. They're just absolutely incredible.

Anyway, little tiny little fan on there that's probably loud, but uh, yeah. um, big switching inductor in there and uh, yep, we've got some caps and you know that's about all she wrote. Not sure if it's a similar topology to the Rd, uh, tech one. Yeah, we'll have a look in the uh full review.

Maybe someone, even maybe someone in the Ev blog forum's already reverse engineered one of these puppies. Who knows. I don't know if anyone's got a schematic leave it in the comments, but uh, yeah, there you go. I mean, um, do, what more do you want for your 36 bucks? It's just like, insane, uh, value and especially that it has like, you know, it's got the Dc jack.

It's got the banana jack's input and the uh power delivery as well. Power deliveries are tricky standard, so I wouldn't uh, race into thinking that, oh, it's gonna, you know, supply up to a couple hundred watts or something from the the maximum from the power delivery, it might only be rated to certain things that often. They're not really fully compatible. they're buggy and all sorts of stuff.

So yeah, but uh, three different input, uh, Dc types and uh, it looks like it's got a Usb on the output to power Usb devices. That's pretty cool. Bananas? Yeah. Incredible value.

Wow. Oh, there's your output. Uh, is your output current shunt? All right. I'm putting 64 volts in.

That's the highest my supply will go up to without. uh, series in them. and uh, 10 volts? Uh. output? That was.

Its uh, default. and sure enough, uh, that's good. More than good enough for Australia. So 9.98 no workers.

so that's just on off like that. Pretty simple. And then your Va here. you just choose.

Oh yeah, it goes white there and then we can adjust. Oh no, we can't No, we can't. What? What set? Oh there. Oh, then you've got to choose your digit.

Uh yeah. okay, not the best. Yeah, I reckon that user interface should have just gone automatically into there rather than just, uh, you know, choose. But then, I guess no, you've got to choose a digit.

But now it would have been nicer to to set the resolution that you want when you're going like that, but it just would have been nicer to do that. Anyway, there's no velocity control on that, so that's a bit how you're doing. but the uh display on that. it's very reminiscent of the Rd tech ones, isn't it? But anyway, I like that they got a timer there that uh, okay.

so it's been powered on for three minutes and 23 seconds. How do you can you reset that? Oh whoa. okay, we just switched it off. There we go.

Go straight in. There's no like, um, the splash screen or anything and the time stays there. That's interesting so I'm not sure how you reset that. I'm not going to Rtfm just now.

Anyway, let's say 57.6 volts and we'll put a load on. So current set of 1.2 amps here. Let's just go for a constant current of say one amp here. So that's 57 watts.

0.986.997 That's a little bit out. I don't know if that's still within spec, but uh, fans not turning. So there you go. That's good because these things are going to be, uh, quite reasonably efficient.

Although you know you'd have to do the full characteristic curve, it's actually a lot of effort to if you want to get the full characteristic curves of all this for the different voltage range inputs and you have to get like at a parametric uh sweep of all the different voltage inputs to output versus output curves. So you need like multiple curves, you can't just get one Anyway, that's kind of working. That's all I wanted to check is that magic smoke didn't escape and it's not escaping and she's not getting. she's not getting warm at all at 56 watts.

Anyway, not a full review. That's the uh, nursey Fursy? I don't know. They've actually got an F dash in here, so I guess it's nursey. Um, probably somebody corrected me on the previous video.

I'm sure. Uh. Dc606l. and well for just insane like this is currently 36 bucks at 40 off on Aliexpress Linkedin down below.

I mean, geez, You know. I mean even if it's it doesn't work that great. It it doesn't matter, it's for the price. It's just insane what you can get with these power supply modules these days.

Incredible. I forgot to read the note. Hi Dear David I am Product Manager of Nursey Thirsty from China I am assume nice to meet you. Nice to meet you too.

Our company is Shenzhen Fee Niro Sai. Ah, there you go. So Fini Rusai. That's how you pronounce it.

Okay, I'm butchering the pronunciation still. but or Feiny Rusai I don't know, I'm butchering. Either way, we believe, uh, you remember Yes, I remember the oscilloscope that is excellent. Many oscilloscopes so say themselves.

We also saw that you made a great video in your video. We also learned our shortcomings. Our term team updated the 1013d flat panel oscilloscope update in the 5012. Yep, Uh.

the new. The new 1c15. Is that what we got? I guess this is the new 1c15. There's no model number on it.

The new 1c. This is the new 1c15. There you go and a Dc and the power supply. We just looked at following Qr code to download the manual.

There you go. Thank you very much. All right. So this is the I guess the replacement.

Oh yeah, there it is. There's the model and this is the produce certification. Fantastic. So anyway, we get a little scope of probie uh times.

1 times 10. that's you know what is that? Oh yeah, it's a little hundred megahertz chobby. We also get some alligator clip leads and a weird ass uh non australian plug with a how you doing power adapter. Oh yeah, I wouldn't use that one.

Okay, here we go. We're powering it on and here. one see one, five. It pops up on there.

Um, the screen is like, yeah. the angles. Actually it's okay. it's like it's It's not great, but it's You Know it's adequate, especially when the price on these things is like Naf.

All and there you go. A little joystick just moves your channel up and down and it moves your trace left and right there. You can see it up the top and you can see it within the window. Uh, it looks like, yeah, no, we aren't.

There's nothing beyond the window because that's why even have that. Why even have that at all? If there's going to be like nothing beyond the window anyway. Um, maybe at different time bases. But anyway.

seconds, nanoseconds. Uh, the layout here. Like seconds. Oh yeah, I guess that makes sense having them in that direction.

Yeah, because you want it to like, you know, kiss the x. Um, because that changes your X and this changes your Y millivolts. Yeah, I guess that's this is the times one that probe. So uh, ten, five, two one.

It's got the one two five. So I heard a relay click. I'm sure I did 20 millivolts. minimum range, you know, but that's it for a little pocket scope.

That's fine. We don't care about the performance in this video, so we're going to whip this open. Uh yeah. a little tilting bail.

Nice and wide though. So let's crack it open and there we have it. Oh well, we've got. isn't that the same as similar? Oh, there's a hair in there.

There's a hair in there. I can't remember the exact layout of the previous one, but wasn't the same didn't They have an St Arm micro and a Altera max 2 Fpga and um, sample memory and and the Adc and that was a bit. and then that was it. But they were like underclocking the Adc or uh yeah.

no, it was like they were doing some weird multiplexing thing and it was coming together. Um, why they've got gunk on there? I'm not sure they rubbed the numbers off there. No, they haven't This is really difficult. It's an Mxt 208 and here's the data sheet for that.

unfortunately. Um, not in English, But uh yeah, it's pretty clear that's an 8 dual 8-bit 100 meg sample per second assuming that's on both channels. The best they can do for this is 200 meg samples per second. I haven't checked the specs on this, but 200 megs amps per second.

How are they gonna get their 100 megahertz, 110 megahertz bandwidth with 200 meg samples per second? Yeah, I think the same, uh, funny business is going on here has happened to the previous one where they were doing the same thing with the uh, analog devices Adc. so I don't. I yeah, I don't know, requires a full review and investigation of this thing to see what's going on. But look, it's beyond the uh scope of this video.

Get it. scope. I'm here all week. Uh, it's beyond the scope of this video to, uh, you know, go into more details.

I don't want it. I'll leave it to a separate video if everyone's anyone's interested in this. but you know they've already had many sucks of the Sav. I mean, you know it looks like right off the bat, 110 meg again? uh yeah, I don't think they're going to be able to do that.

and once again, like, um, and the front end isn't the front end like oh no no no, it's better it. So if they got like a fat front end this time, maybe not sure what's going on. Anyway, I work a high-res photo of my new lightbox over on the Evblog forum. Okay, very quick check.

Uh 50 ohm terminated input: 100 megahertz Uh. three volts p to peak. Let's see what we get. Yeah, um.

same problem that we got before isn't it? And trust me, there's no modulation. No Am modulation on this. uh. signal.

No, it's just a well. Of course it's going to come. And guts are there. It's it's measuring it.

It's saying it's 100 Megahertz Can actually measure the thing. but uh yeah. I mean 2.72 volts peak to peak. It's kind of sort of getting there.

but it's just no, no, no, no, no, no. And 10 megahertz? There you go. That's a little bit better. Let's just push that back.

Can you center that? You can't just center it? That's kind of annoying. Um, but uh yeah. it's a bit how you doing. It's a bit wobbly.

but yeah. 3.3 volts? Uh, that could be the linearity of my generator. Let me double check that. Oh yeah.

3.24 3.23 Something like that? Yeah, that's all right. Okay, 10 Megahertz. What I'm going to do is just wind the frequency up and uh, see if she comes. The guts are 15.

Oh 20. I'm not sure what's going on there. 20 30. Whoa.

Hey, she's jumping all around jumping jack rabbit at 25 Megahertz. Um, yeah, not sure what the problem is there with the jitter. Oh goodness. Oh boy.

Yeah. Once again. look, look. we're getting like, look at that, it's getting modulation.

No, there's sampling issues. This is 35 Megahertz 47. That's 50 megahertz. Nice.

It's just as terrible. Muriel Now, I don't think they've improved anything at all. anyway. Um, they'll be.

I'll put in a link to a specific thread for this over on the Ev blog forum because a lot of people, uh, talked about the previous one. A lot of people actually a few people actually reverse engineered the thing and they analyzed it and did experiments with it and all sorts of uh, stuff to see if it was like a usable platform they could actually reprogram. I'm not sure if anyone actually did that because it's just got an Str micro in it. So um, yeah.

Anyway, I'll link it in. but yeah. Next up got one from the United States of America. Thank you very much Kev Kev From Medina, Ohio.

How do I? My people in Ohio? Chris Gamma was formerly from Ohio. now he's in Bloody Chicago. Oh okay. it has the uh paper folded over the top.

Got it? Nothing that can't be fixed with the knife. Got the digi-key wrap. It is a hang on hang on 3d printed box. We have a note, it's a trig board.

There you go. Um, I don't know what a trick board is. Obviously it does some sort of triggering. Does it do some sort of scope triggering or something? It's version eight.

It's gone through a few revisions. Check it out. It's got the Wi-fi's It's got one of those wi-fi processors on it. not sure which one.

My battery just very rudely died in the ass. Anyway, let's have a squeeze There it is up. No, no face tracking, Off face tracking off Dave. I think I need.

I didn't enable our product shot. Oh come on, didn't enable product shot. But yeah there it is. Little Trig Board and this is another board which I don't know what this is.

little. uh, I just goes into a headery thing. Oh, is that his cereal? Is that a Uh 232 serial? Kevin Duran calls himself the Trigg board guy. Been a huge fan of user for years.

Thank you. Very much inspired me to start my own channel. Awesome! I'll link in his channel. uh Lol.

That was like 10 years ago now, right? Yeah, I think you mentioned this somewhere. Um, but anyhow. heads up, I just wanted to send you something I've been working on a while now called the Trig board. I got this obsession with low power design.

Awesome. This bad boy is a single digit. uh, Esp32 board. Uh, wakes on contact, open, close, plus timer.

Anyhow, shoot over to mailbag. I'm not expecting to see a celebrity appearance of it in your next mailbag video or anything, but man, that would be cool. Oh, you're in the mailbag. You send stuff to Po Box 7949, Norway's New South Wales 2153, Australia, not Austria.

You'll get on the mailbag. Cool. I'll link to Kev's channel and we'll check out the trig board. I still don't know what it does.

It's a low power Esp32 that wakes up. There's a fair bit of business going on on the bottom though. Oh, okay, right. Oh okay, so that plugs into there, right? So that makes it a Usb interface thing.

anyway. close-up required. So this is a little uh Trig board kit and it's all documented on his site. Very comprehensive.

He's got videos on it as well. So this is the Uh Trig board itself. This is, as I said, the Rs 232 serial, uh Usb interface. Uh, just to program the thing and um, he's just given me a that's a little read switch if you haven't seen it, read switch before, there it is.

and then this is just a magnet and two little contacts in there and it just uh, opens and closes. And that's what the trig board does. I like these little simple one, you know, just designed for one just to do one thing. and that's it.

So you hook a battery on here. it supports Lithium ion batteries as well as uh, in this particular case, uh, two. Aaa's like this. It's got 1.5 microamps standby power consumption so that's like sniff of an oily rag like shelf life of the battery stuff.

practically. Anyway, we've got an expressive Esp 32 on here with the Wi-fi's and of course you know your program to hook up, uh to your wi-fi and all it does is detect a the sensor here. be it a uh, look like an infrared uh per sensor motion detector for example, or in this case the uh read switch that we have. You know somebody opens a door or a window or something like that.

They whether they break in or you just want some motion detection for what whatever reason it is and then it simply does. A connects to the Wi-fi wakes up, connects to the Wi-fi does a push notification and then it can use uh services like uh, you know, if this, then that or any of you know a couple of other uh of those similar types of services to then you know a treat like do stuff and you know, send a notification on your phone, send an email, do whatever. So yeah, it's just got a reset and a wake button there and so you can just manually, uh, trigger the thing I guess and that's all it does. But of course you know you could program it to do other things, but that's its uh, primary purpose.

So there you go. I just love those you know, single dedicated function board so that's actually quite comprehensive on the back there. that's uh, quite a dense double-sided load actually. And the uh, documentation on his website for this, uh, it's really something to behold.

Definitely check out the link below. Um, it's really comprehensive. So awesome work mate. This is.

Uh yeah, this is neat. I I won't go to the effort to like, you know, program the thing and like power it up just for this, uh, mailbag. but I'm sure it does the business. He's put a lot of effort into this.

This is like rev. uh, this version eight? Um, so yeah. it's gone through a lot of iterations. I'm sure it works absolutely flawlessly.

So I just love dedicated stuff like that, just does one job and does it well. and that's it. So anyway, subscribe to Kev's channel. he's about to hit 100k.

I'm sure we can fling him way past the 100k and get that Youtube silver award. Definitely deserves it. Well worth a sup. doesn't say who this one's from, but it's from Malvern.

Uh, that's in Victoria. Hi to all my Victorian viewers and all right it's a no name, but it's got a it's a metal can. Oh it should be A. I think this is like a bit of old bit of kit and I'm suspecting a tear down some description.

Wow. What is that big ass metal can? Ding connector on the back and on the front? I haven't looked at it yet. You're the first to see it. What is it? It's A.

It's a print. It's got a printer port and then it's a Flp. Whatever that is Okay, no what on earth is this thing? I don't know. Some industrial bitter kit.

Um, there's no no okay. What is this thing? I got no idea. Um, looks pretty old school. Looks like you know, like 80s or something.

If you do know what it is, leave it in. The comments down below, let's crack it open. Well, hello, um, that's chocker, isn't it? Ah, got a vata Lithium battery in there that's almost. uh, it's likely.

uh, kaput after all this time. Is that like a reset switch or something? I don't know. but uh yeah. very comprehensive.

Do these boards? just? do they just pull out? or ah, what's what's deal? Oh yeah, I think they might just extra force required. You can't get a real good grip on them though. Ah, geez, it's full of boards. Check this out.

This is great. The designer obviously went to a lot of trouble to ensure you can't plug the wrong board into the wrong slot. They're all like, subtly staggered like this. And then they went.

Oh, did I run out of room? Oh good, because I had to route this around here like this. I'll just shift this one back, but it doesn't line up with anything else and some are two rows, some a three row so it's absolutely impossible to plug them into the wrong thing. So yeah, that's great. I mean, and said, why have we got a big ass inductor just flapping around in the breeze up there? I don't know.

but uh yeah, none of that. um, solder mask rubbish. Good old, uh old-fashioned tin plate and it is a, uh, double-sided job. There you go.

8031 Classic. Got our Roma, got our Ram. That's a nice looking socket, isn't it? I don't think I've seen one like that before. That's pretty fancy.

pantsy. um Jenny. Anyway, um, yeah, we've got some. I o the eight, two five five eight two five four.

What else have we got? Another eight, two five five with its own crystal and uh, we've got some analog goodness going on here. Lots of on. there. Is that like a socketed relay or something? I mean, just got a whole bunch of uh, 4000 series cmos thank you very much.

and another board. uh, which is looks like this guy. It's got some amd uh, stuff on there, but uh yeah. some more 4000 series logic, some Motorola, you know, some sort of drivers or something.

Then this looks, uh, kind of special. Like it's uh, the main purpose of this thing. What's a Pcf 1100 Db? Anyway, that's got a little, uh, companion board that's just doing some latching and stuff. Nothing special.

There got a bodge wire, uh, another eight, two five five board with bodge wire and then on the uh. processor. Oh, that's got some tin plate on the bottom. So all the boards are all over the shop, aren't they? Um, they're all quite different.

Well, it turns out the Pcf 1100 there and we've got two of them. These are a gate arrays. Like custom gate arrays. So they're yeah, doing some custom special thing that it doesn't tell us anything at all about this.

What we do know is that unless there's signals on the inner layer, um, and I don't think there is, then um, yeah, there's not many connections coming into this, uh, gate array at all. So it's like, yeah, it's doing something, but like, nothing serious. I mean, look at the lack of tracks on this thing. it's just like it's hardly anything.

So yeah, they're doing something serious that requires a lot of Gatorade action. I mean, these, these won't be big Gatorades, I don't think, but not like large Pld type stuff. but obviously like maybe they're processing some serial data or something like that. Perhaps I don't know.

7400 there? Um, that's like yeah. Anyway, I was right about the date on this. I mean, we've got 86. Uh, there's 88.

um, most of it's 86. Is that even it looks like 88. Everything else seems to be like 86 85. Something like that.

So anyway, um, it's It's mid to late eighties vintage. which is what, uh, you would guess. but um, what? what does it do? I don't know. It's an Lcd.

It's got an 8031 processor. It's got some gate arrays to do something special that the processor couldn't Uh, so maybe it just it needed some. you know, faster. real-timey action for that.

but it seems to be like doing some serial decoding or something. And it's got lots of, uh, you know, the bus latching and other stuff going on. and it's got some analogy. Goodness, I don't think we saw an Adc on there, did we? So I don't know.

and I think it's like converting. It's not like it's getting any analog sensor data and uh, converting it. So yeah, I don't know. That's a very strange one.

Um, it's got like registers and stuff like register and all registers. Lp monitor mode. uh. battery does it so well.

Obviously not room for an internal battery in the thing, but um, Il alarm? maybe Lt1 up and down program. Enter: I don't know. leave it in the comments if you got any clue whatsoever. because I don't you.