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PP PSU:  How much ripple is too much ripple?
PP PSU:  How much ripple is too much ripple?
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Old 11th September 2011, 06:59 AM   #11
artosalo is offline artosalo  Finland
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artosalo, out of interest did you have matched output tube idle currents, or better still were you able to check output hum levels whilst you varied idle current mismatch?
There is bias adjustment for each output tube and idle currents were set identical ( about 50 mA).
I did not test the effect of current mismatch. The global negative feedback was 16 dB.
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