Physical Transformer Proximity Help!

wrl · 17th August 2004, 04:31 PM

I am just about to finish my Leach amp but I was wondering if there will be any problem in placing a small standby transformer approximately 1 inch above my toroidal power transformer. Any interference with the mag fields?

Would it help to place a copper sheild around the power transformer? If so, what thickness?

Here are some pics of possible configurations. The first two are the ones that I am favoring for layout reasons, but the second two place the two transformers farther apart.

Thanks,

Wes

wrl · 17th August 2004, 04:33 PM

Pics #2

wrl · 17th August 2004, 04:35 PM

Sorry about the image quality, the blue thing is the standby transformer.

wrl · 17th August 2004, 04:38 PM

last one

Bruno Putzeys · 17th August 2004, 09:07 PM

I can't imagine what should be the problem. It seems like a logical arrangement to me.

wrl · 18th August 2004, 02:51 AM

Anyone else, I have heard of possible interferance from magnetic fields of each transformer with the other. Just want to be certain.

Thanks,

Wes

wrl · 18th August 2004, 02:53 AM

Also, is copper sheilding recommended? And what exactly does it do... cuts down on stray field lines right?

Mr Evil · 18th August 2004, 03:56 AM

Quote:

Originally posted by wrl
Also, is copper sheilding recommended? And what exactly does it do... cuts down on stray field lines right?

Copper shielding will stop electric fields and EM radiation from escaping or getting in (providing the shielding contains gaps no larger than the wavelengths to be shielded against). It does nothing to stop magnetic fields because it's not ferromagnetic.

To shield against magnetic fields you need to use a material like iron (the soft steel used in cases for PCs and other electronic equipment is a pretty good, often free material to use). Note that you can reduce magnetic fields with shielding, but it is impossible to eliminate them entirely, unlike electric fields.

18th August 2004, 02:51 AM	#6
wrl diyAudio Member Join Date: Jan 2003 Location: USA	Anyone else, I have heard of possible interferance from magnetic fields of each transformer with the other. Just want to be certain. Thanks, Wes __________________ Anything worth doing is worth doing right... and redoing to make it better... and again to fix it back the way it was.

18th August 2004, 02:53 AM	#7
wrl diyAudio Member Join Date: Jan 2003 Location: USA	Also, is copper sheilding recommended? And what exactly does it do... cuts down on stray field lines right? __________________ Anything worth doing is worth doing right... and redoing to make it better... and again to fix it back the way it was.

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17th August 2004, 09:07 PM	#5
Bruno Putzeys diyAudio Member Join Date: Apr 2004 Location: BE/NL/RW/ZA	I can't imagine what should be the problem. It seems like a logical arrangement to me.

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