Transformers are close to output boards

codegen · 8th March 2011, 07:21 AM

Hi All!

Im in abit of trouble. My transformers are very close to the output boards, and i fear trouble becouse of that.

I do have both steel and cooper sheets that can be used to ehm.. screen(?) transformers from the outputs, but witch ones will be best to use?

Sorry my bad english, not to sure about the words, hehe

Einric · 9th March 2011, 04:16 AM

It has been my experience (from a grounding perspective) that stainless steel will ground RF better and copper will ground power better. In a shielding situation I think that the steel would be better since it is a ferrous metal. Lead would probably be ideal but the point is to prevent the magnetic lines of flux from messing with your output stages.

For this application I would go with steel.

Andersonix · 13th March 2011, 08:52 PM

A tin can (usually tin-plated steel actually) would also work here...
(konserv burk)

codegen · 13th March 2011, 09:08 PM

Okey, thank you both!

Andersonix · 14th March 2011, 04:42 AM

Beware of inadvertently making a 'shorted turn' on the transformer when you bolt up any extra shielding.

8th March 2011, 07:21 AM	#1
codegen diyAudio Member Join Date: Dec 2006	Transformers are close to output boards Hi All! Im in abit of trouble. My transformers are very close to the output boards, and i fear trouble becouse of that. I do have both steel and cooper sheets that can be used to ehm.. screen(?) transformers from the outputs, but witch ones will be best to use? Sorry my bad english, not to sure about the words, hehe

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9th March 2011, 04:16 AM	#2
Einric diyAudio Member Join Date: Feb 2011 Location: Bozeman, MT	It has been my experience (from a grounding perspective) that stainless steel will ground RF better and copper will ground power better. In a shielding situation I think that the steel would be better since it is a ferrous metal. Lead would probably be ideal but the point is to prevent the magnetic lines of flux from messing with your output stages. For this application I would go with steel.

13th March 2011, 08:52 PM	#3
Andersonix diyAudio Member Join Date: Jan 2004 Location: Silicon Valley	A tin can (usually tin-plated steel actually) would also work here... (konserv burk)

13th March 2011, 09:08 PM	#4
codegen diyAudio Member Join Date: Dec 2006	Okey, thank you both!

14th March 2011, 04:42 AM	#5
Andersonix diyAudio Member Join Date: Jan 2004 Location: Silicon Valley	Beware of inadvertently making a 'shorted turn' on the transformer when you bolt up any extra shielding.

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