I have a question that came to mind after seeing big companies suing each other for licensing fees because they assumed that by purchasing the component they were covered. It seems like just buying a part doesn't cover it's usage (well, it might if your project doesn't make a lot of money). But it looks like on top of going through the datasheets you also have to go through licensing investigation. Is there a place where you can find out if a part has licensing fees attached to them?

How would you get 1.21 gigawatts into the flux capacitor?

Bodo Eichstädt :I understand why it fails, I just don't understand why electrical engineers don't take a known failure condition in a required usage condition into account. I don't think a car owner would be happy if he got a message saying "Here's your car, you can't use it in the rain by the way, we couldn't be bothered putting rust protection on it". 

Do you use ESD equipment (like wrist strap, grounding mat) in your lab? I'm sure that I'm not the only one who does not "follow the book" on ESD protection when soldering and prototyping.

please give info on IGBT based PWM modulated static volatge(AC) stabilizers.

Eletronics + water = no good. Read the wikipedia article Humidity. Understand relative and absolute humidity and especially what happens if you carry a device outside. Second: high temperature (especially speedy heatup like if you put a black device into direct summer sun) put stress on solder joints. I had to reball my graphics GPU inside the laptop which was going to 120°C.
So Dave how can we run stuff outside temp specs? Any hardware/case mod tipps? Any resin, spray, … to help?

Dave, can you explain about how a grounding cricuit may develop reactance, and hence, might not actually be a ground at all in this instance, and how to prevent that situation from happening?

Hi Dave. Thanks for putting in so much hard work on this series. I have a good working knowledge of digital and analog electronics and microcontrollers, but radiated energy from antennas completely baffles me. I get a single pole antenna, but don't understand how different shapes of antennas can focus a transmission pattern and how the ground plane works. Do you understand any of that and/or know any sort of test circuit could be set-up to transmit and receive in various transmission patterns?

Why does so much electronic gear have a (ridiculously) high "lowest operating temperature? I can see how that isn't a big issue in places where they are designed, which are usually hotter, like California or Australia, but here in Norway it does cause major issues if you can't use the gear below 0ºC, which means about half of the year..

is it good to get a desoldering pump with a piece of metal sticking out

I have always been wondering, how did you manage to become this skilled and knowledgable within electronics? At what age did you start studying electronics and what was your main resources of information? Please, tell us a little about your life story.

Have other people in your office building caught on to your repair skills and ask to to fix their broken crap?

Hey Dave! I grew up primarily in the bipolar-junction transistor world and find that the options are pretty much NPN or PNP with variations in power capacities and maybe Darlingtons. But field-effect transistors are still something a little nebulous to me. I know they have a voltage-controlled gate, a source-drain on-resistance, come in N-type (which is like an NPN sort-of) and P-type (like a PNP, sort of). What are the major types of FETs I might want to use? MOSFET? JFET? What else?

Will there be a release of uccurent rev3? I don't have one yet, it has appeared in the background of other videos (somebody has commented that anyway, tell me if its not true).

because, i can tell you from experience, they are far superior in sound quality and volume out of a given power output 😀