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Author Topic: Mains EMI Filter  (Read 1956 times)
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technovm
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« on: September 24, 2010, 01:27:56 13:27 »

Need a good design for mains EMI filter.

Thanks in advance
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oldvan
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« Reply #1 on: September 24, 2010, 03:11:52 15:11 »

Design will depend on your current requirements and whether 1 or 3 phase power.
Will also depend on the frequency or frequencies of EMI you need to attenuate and
how much attenuation is needed.

Please provide more information.
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metal
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« Reply #2 on: September 24, 2010, 04:58:49 16:58 »

Look inside PC PSUs, you will find good examples. There are 2 versions, one that comes soldered directly to the inlet socket, the other comes assembled on the main PCB, but still you can tell this is the filter.
« Last Edit: September 24, 2010, 05:04:25 17:04 by metal » Logged

nothing to say..
download_crux
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« Reply #3 on: September 25, 2010, 10:16:41 10:16 »

hiiii

see this file
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technovm
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« Reply #4 on: September 25, 2010, 10:19:26 10:19 »

Design will depend on your current requirements and whether 1 or 3 phase power.
Will also depend on the frequency or frequencies of EMI you need to attenuate and
how much attenuation is needed.

Please provide more information.

Single phase 2 Amp. Is there a generalised filter?
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Triodethom
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« Reply #5 on: September 28, 2010, 03:10:02 15:10 »

 Mouser for 120 volt 1 phase medical is about 4 dollars us . Medical is spec'ed at low leakage current same price as reg . If you look at the data sheet  you will see the specs.
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