Dave shows how to upgrade an Agilent/Keysight 6643A/6642A/6641A system dc power supply to have front panel binding posts.
Sense lines are added to improve the high current accuracy.
Operation Manual: http://literature.cdn.keysight.com/litweb/pdf/5964-8267.pdf
Service Manual + Schematic: http://literature.cdn.keysight.com/litweb/pdf/5959-3376.pdf
Auction Score video: https://www.youtube.com/watch?v=peRJtgfn-Lw
Forum: http://www.eevblog.com/forum/blog/eevblog-667-agilent-6643a-power-supply-binding-post-hack/'>http://www.eevblog.com/forum/blog/eevblog-667-agilent-6643a-power-supply-binding-post-hack/
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Sense lines are added to improve the high current accuracy.
Operation Manual: http://literature.cdn.keysight.com/litweb/pdf/5964-8267.pdf
Service Manual + Schematic: http://literature.cdn.keysight.com/litweb/pdf/5959-3376.pdf
Auction Score video: https://www.youtube.com/watch?v=peRJtgfn-Lw
Forum: http://www.eevblog.com/forum/blog/eevblog-667-agilent-6643a-power-supply-binding-post-hack/'>http://www.eevblog.com/forum/blog/eevblog-667-agilent-6643a-power-supply-binding-post-hack/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
EEVblog Amazon Store (Dave gets a cut):
http://astore.amazon.com/eevblogstore-20
Donations:
http://www.eevblog.com/donations/
Projects:
http://www.eevblog.com/projects/
Electronics Info Wiki:
http://www.eevblog.com/wiki/
Done.
Hello, I purchased an HP 6673A for my brother in overseas and trying to test it in the US with a cheap voltage converter (US voltage: 110V 60Hz to 220V 50Hz) The unit powers on, I hear the fan noise, however there is no display. I downloaded the service manual and read the No display section, but can this no display issue be arising from the cheap voltage converter that I purchased from Amazon? What do you think? Thanks in advance.
I have a problem with 6643A power supply, I turn on and the power supply send me 28 V and the display infantes DIS, could you help me?
I know this is an old video, but someone on thingiverse made a like for like STL file you can just download (search for HP Binding Post Adapter) and make this mod look much cleaner.
is 150 usd a good price for one of these?
Hi Dave!
Can you please install a mode switch in this type of power supply? (dip switch perhaps)
I'm considering buying one and I wonder if I could have more voltage with mod switch.
Thank you and keep up your great work!
Crimp on ring terminal all respect lost.
I can get an 6032A in fully working for 80€. Is it a good price?
Great job dave very neet "winner winner chicken dinner "
Sir please give solution on in power supply model 6643A. The problem is display is showing overload, while device working fine on full load. But the display always showing overload. Please make the vedio also. From India
Just got a 66332A for free at a garage sale and was planning to the same mod when I happened to stumble upon your vid. 🙂
I guess the cutouts are for 6 binding posts with 19mm spacing.
For those front three jacks, I would order a small rectangular 3mm thick aluminum panel from a place like "Front Panel Express". A rectangular panel with screw holes in each of the corners, and the three binding post holes properly keyed to the shape of those Jaycar posts. They can also silkscreen the labels GND, POWER and EARTH or engrave them. They are always fun to receive orders from.
Fantastic thanks. I will try that on my unit..
Where's EEVblog #666? All I see is #665 and #667.
I would of added sense binding posts so that you could cancel out the cable drop or just jump em over when you don't need the precision
Ah, I've been trying to figure the pinout of the four terminal resistor in a 66311B I bought as a fixer upper. The service manual says to use A1 R431-[pin]4 as the common for bias measurements.
Have you considered bringing out the sense lines as separate terminals?
where is #666? hahaha
Dave it would be nice if you could do a video about guard rails on PCB, on when, why and how to implement them 🙂
Where was #666???
to keylock the connectors, you would have to drill through the mounting surface into the flat backside of the connector and fit a pin. to make it rocksolid, use at least 2 opposed pins to handle the force symmetrically and fill the cutouts to have a plain mounting surface for the same reason.
Just got my hands on one of these, an older model actually, HP branded 6632A manufactured 1986. It still has the on board connectors for the front panel though. And looking forward to adding front panel binding posts using your video as a guide. Thanks Dave! By the way that things weighs a freaking ton, seriously it is like 40 Lbs.
where is "EEVblog #666"
When are you going to make a video explaining dual quadrant?
where's the 666th video?
Fill the holes with Epoxy glue (24 Hour type) mixed with cut up FG about 3mm long. Then drill for posts.
This worked well with mine. Good mod on the sense wires that is my next fix. Thanks Dave Thumbs Up!
looks like it's fitted for 3 double slots