Arthrimus Posted April 11, 2017 Report Share Posted April 11, 2017 (edited) 5 hours ago, alcofribas said: Thanks a lot Arthrimus. Now's my chance to figure out how a voltage doubler works. Unless I'm completely out of it, your circuit is meant for 117V, right? Pondering over this circuit reminded me that the WEE has a voltage conversion switch... and something clicked in my head. What, do they have a transformer to handle AC in there? And it looks like it... talk about overdesign. At least this gives some kind of protection, same kind as razors in bathrooms. This circuit is universal it has a bidirectional 100v Zener Diode on the input that limits the voltage to 100v for the multiplier so it can work worldwide. It's basically Stax's SRD-7 Pro circuit, with a couple of components reorganized to fix their mistake of putting R103 and R104 before C107 and C108 instead of after. Z101 can be substituted with 2 back to back unidirectional 100v zener diodes if a bidirectional one can't be found. I've used a pair of 1N527 for this. Also you can sub 1N4007 diodes for D101-D106. Edited April 11, 2017 by Arthrimus 1 Quote Link to comment Share on other sites More sharing options...
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