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In Reply to: RE: It's not a mistake. posted by Triode_Kingdom on August 18, 2014 at 07:10:44
TK, when the amp is in standby the only load is the 570k ohms.
Tre'
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"when the amp is in standby the only load is the 570k ohms."
Yes, I see that now. So, maybe the voltage increase was more than the 500V cap alone could handle. It would be interesting to measure this on a live amp. In any event, I think FenderLover's idea to use two 80uF caps is reasonable. I'd probably use a pair at 330V, rather than 450V, just to be sure they stay formed.
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From the C-D manual and various other sources, it is fairly common (especially in military gear) to run electrolytics at less than the rated voltage to extend their lifetime. Usually this is done at between 50% and 80% of the maximum rated working voltage.
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