Electronics > Beginners
Voltage multiplier
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sureshot:
Thank you for posting that circuit. It looks quite good. Worth having a go at it.  ;)
Zero999:
Here's the LM317 version. The principle is the same: feed the biasing circuitry from the voltage doubler and the pass transistor, straight from the rectifier. The LM317 passes 50mA maximum, so it could be replaced with the cheaper LM317L, in a plastic TO-92 package. It doesn't have any current limiting, but that can be added, if needs be.

EDIT: I got the VRectifier and VDoubler labels wrong.
sureshot:
Thank you for that, yes I'm yet to use the lower current lm317L device. Thanks again for the schematics. :)
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