I have a current source that's basically a square wave with a small duty cycle (maybe 10-20%). The frequency might be around 100-1 kHz. It's a coil that gets charged periodically. Any thoughts on an efficient method of making a voltage source out of this efficiently? The charge for the voltage source would be stored in a large capacitor.
I was thinking about charge pump circuits like Maxim's MAX1682 switched cap voltage doubler, but perhaps there are better solutions.
Thanks.
StephenB
"Stephen-I-am"
** And a wot a wanker-u-r** Then it is a pulse train, not a square wave.
Be handy to know what sort of voltage and current levels are involved....
** What else might it also be ??** Capacitors get charged, coils acquire magnetic fields around them. ** Be handy to know what sort of voltage and current levels are involved.... ** Wonder what this clown's idea of "large" is ??
** Ahhh - so the voltage and current levels must be quite small.
But still no clues as to what this clown is actually on about.
BTW
Is there some sort of prize being offered for posting the most totally meaning free design question every month ??
..... Phil
Yeah I like the idea of a prize for the worst question!!!
George H.
Coils alone do not produce or sustain square waves of current, unless they are coupled to an electromotive force, as in a motor or transformer winding, that make them look like a transformed voltage source. Inductive current and stored energy change only under the influence of a voltage.
Unless you're talking resonance, the energy can only be stored in a capacitor after rectification, as the connected inductor is low impedance for DC. The capacitor would serve, alone, as a voltage source for further processing.
Maybe if you can be a little less cryptic about what you're trying to do, constructive advice might be possible.
RL
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