Not so when charging a cap to oh say 400 or 500 volts from a 12v power supply through a transformer being switched by a transistor. Charge time then depends on the current capacity of the transistor, inductor & rectifier, etc. (assuming no other current controlling factors are present)..
Ever heard that little "whistle" or "whining" sound the strobe circuit makes before it will fire? that's the sound of the transformer being switched by the transistor.. in order to make the higher voltage to charge the cap. As the pitch of the sound changes the charge rate changes with it. Not all caps are charged via a fixed resistance. jg On Mon, 2008-10-27 at 14:05 +0000, [email protected] wrote: > The time to charge a capacitor is given by the RC time constant.
