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Old 24th June 2007, 11:58 PM   #1
ctong is offline ctong  United States
diyAudio Member
Join Date: Jun 2005
Location: Clemson, South Carolina
Default Ground issue

I am modifying my Sony SCD-C555ES. In the IV and output sections, the signal input ground, the output ground, and the power supply ground are all isolated (although they are connected somewhere outside of the audio board). I cannot make much sense out of this design and believe that it creats problems for high frequency singals. Any thoughts on how to connect the grounds without creating a large gound loop?
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Old 26th June 2007, 05:18 PM   #2
diyAudio Member
Join Date: Dec 2001
Location: Eindhoven

Your observations are correct

One should use a closed groundplane to avoid signal loops.

On my site, I have a PDF with advise on how to layout a circuit board

Currently my site is down due to hosting transfer, but you should be able to find yout way tomorrow

Guido Tent
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Old 26th June 2007, 06:36 PM   #3
ctong is offline ctong  United States
diyAudio Member
Join Date: Jun 2005
Location: Clemson, South Carolina
I look forward to see your site.
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