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Old 5th July 2012, 05:15 PM   #31
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Hi,
Attached it is drawing of the star ground that I used to fix a hum problem in my amplifier. It may help you fixing your problem.
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File Type: jpg star ground layout.jpg (175.4 KB, 49 views)
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Old 5th July 2012, 05:21 PM   #32
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Well, if no change at all in buzz after moving tx then at least that is one thing you can cross off the list.
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Old 5th July 2012, 05:29 PM   #33
Puffin is offline Puffin  United Kingdom
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Quote:
Originally Posted by cochleus View Post
Well, if no change at all in buzz after moving tx then at least that is one thing you can cross off the list.
Yes, i'll try anything!

Thanks for your input.
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Old 5th July 2012, 05:32 PM   #34
Puffin is offline Puffin  United Kingdom
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Quote:
Originally Posted by tauro0221 View Post
Hi,
Attached it is drawing of the star ground that I used to fix a hum problem in my amplifier. It may help you fixing your problem.
Yes, I was going to make a ground breaker circuit as per Elliot Sound Projects.
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Old 5th July 2012, 06:52 PM   #35
generg is offline generg  Germany
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With similar circuits I could get them only (nearly) humfree by connecting all ground cables from one side directly at the source or if you use a source resistor of course under the source resistor....
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Old 5th July 2012, 06:58 PM   #36
Zen Mod is offline Zen Mod  Serbia
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well - I wrote that one proper pic is worth as zillion words

problem can be wiring , but also physical layout of ripple currents in your C bank

how's that made ?

it's easy to make pics today , to shrink them and post them

don't use flash but some other source of additional light

anyway - look here - maybe you'll learn trick or two ( same as I was doing long ago before internet , first read , look , think ........ and ask only if you're in deep drek)

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