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Old 18th April 2006, 12:45 AM   #1
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Question Dual chassis earthing question

I am a newbe working on completing an ono clone.

I have a question regarding the chassis earth for a dual chassis arrangement.

Should the chassis with the phono stage be earthed in a separate cable that is connected to the PSU box chassis that in turn is connected to AC earth?

Should I have two separate earth cables from phono box one with signal earth to PSU box and one for chassis earth?

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Old 20th April 2006, 09:55 PM   #2
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No one can give me some guidance ? Maybe its best to try and see!
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Old 20th April 2006, 10:05 PM   #3
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My preference is to AC earth ground the chassis of the power
supply and then connect the power supply circuit ground to
that AC earth ground through a bridge rectifier (so that it
conducts above .7V) in parallel with 22-47 ohms or so. Then
I attach the chassis of the signal circuit the signal ground
and see to it that the chassis does not otherwise get connected
to the AC earth.
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Old 21st April 2006, 08:12 PM   #4
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Thanks mr Pass.
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