On Sat, 2023-04-15 at 12:47 +0100, Ralph Corderoy wrote: > Could it have a store of power, e.g. capacitor, which takes a while to > discharge. :-)
No! An electrolytic capacitor that holds enough charge, is way larger than an USB stick. When I was still working as a developer for recording studio stuff, we used to have the childish joke of throwing charged capacitors at each other and shouting "catch it".
