Some time ago it was suggested that I add a .01 capacitor between B minus and the AC line on my kit battery eliminator. It did indeed reduce the hum to the point it is minimal now. What I am questioning however, is the principle behind adding this capacitor, is it a grounding issue in battery sets?

:Some time ago it was suggested that I add a .01 capacitor between B minus and the AC line on my kit battery eliminator. It did indeed reduce the hum to the point it is minimal now. What I am questioning however, is the principle behind adding this capacitor, is it a grounding issue in battery sets?
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What kind of kit did you buy? The amount of hum coming from any power supply should be minimal at most, especially one made for powering battery sets. I would not be happy with indirectly tieing the AC line to the output, even through a capacitor. Perhaps it would be better to earth ground the B-.
Johnnysan-

Agree with all. If you would wire your setup using a modern 3 wire plug and ground your chassis with the green wire, you should be good to go. Use a fuse too, just to be safe. Consider also the A and C power sources in your new environment as well.

Some time ago it was suggested that I add a .01 capacitor between B minus and the AC line on my kit battery eliminator. It did indeed reduce the hum to the point it is minimal now. What I am questioning however, is the principle behind adding this capacitor, is it a grounding issue in battery sets?
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:What kind of kit did you buy? The amount of hum coming from any power supply should be minimal at most, especially one made for powering battery sets. I would not be happy with indirectly tieing the AC line to the output, even through a capacitor. Perhaps it would be better to earth ground the B-.
:Johnnysan-
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