spritzer Posted March 4 Author Report Share Posted March 4 While I was waiting for a flight, I checked out some Chinese sites and found these pics: This is the HV supply for the opamps and the bias supply. This is clearly pretty dire but look at the bias supply... it's simply a voltage doubler off the input AC with no trimmer, no voltage divider, no filter at all but there is more fuckery afoot... look at those bias ballast resistors. Can anybody decode those values? Hint... they are not 4.7M as they should be. 🙄 1 Quote Link to comment Share on other sites More sharing options...
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