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  1. J

    Charging Li Ion batteries.

    Ask me about lead acid and I'll write you a book. But I have a Chinese 36V 5AH (on the label) Li Ion battery pack. I want to charge it and not die or burn my shop down. Eyeballing what's at hand: a variac, bridge rectifier, capacitors, multimeter, resistors, battery pack. So can I just fly...
  2. J

    Driving 3p delta wound motor with H bridge.

    Hey. No particular project in mind, but just mulling the possibilities. I've scavenged a few motor/wheel assemblies - one from an E-bike, one from an E-scooter. Both delta wind three phase. No specs. Wondering how to build a controller (Yes, I know potted boxes are available online) over a...
  3. J

    Hi there!

    My name is Jim, but you can call me Jimbo. I haven't been on a forum since Dutchforce went dark in '15, but I kind of miss the world. I can hold my own on a breadboard, but I certainly don't know near everything, and often have 101 questions. I let the magic smoke out occasionally, but that's...
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