Power supply grounding

Doug Tymofichuk dougt at cancerboard.ab.ca
Wed Jan 5 18:32:18 CET 2000


Thank you to everyone who responded to my tube power supply 
grounding questions.

Unfortunately, there did not seem to be any concensus as to 
the correct way of doing this. Two people advised 
connecting the signal ground directly to the chassis 
ground, two advised connecting them through a 0.05uF 
capacitor, one advised connecting through a low ohm 
resistance, and two advised not connecting them at all. A 
number of people advised me to experiment and see what 
works the best for noise performance.

I had thought that this would be a controversial subject, 
but this looks like complete disagreement! Should there not 
be a "correct" way of doing this?

I have complete control over the equipment I am using, so I 
can ground them any way that I care to. So I would like to 
apply the same rules and techniques to all my equipment. 
For example, I have a Garnet tube amplifier and a Gibson 
solid state amplifier, and if you touch the grounds of both 
at once, you get a real bite! I need to wire all equipment 
the same way, but which is the best/correct way of doing 
this? Or is this one of those issues that never really gets 
properly resolved?

----------------------
Doug Tymofichuk
dougt at cancerboard.ab.ca




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