Gainclone, mains filter, and PSU inductance - diyAudio
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Old 30th March 2007, 04:23 PM   #1 is offline  United Kingdom
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Join Date: Jun 2006
Default Gainclone, mains filter, and PSU inductance

Hi, I am planning to build a "classic" gainclone with LM3886 and 1000uF caps. Trying to make it very small and relatively cheap, hence the simple PSU.

I thought it would be a good idea to use a filtered IEC inlet with an earth choke to remove any high frequency rubbish on the mains, and to stop noise getting in through the safety earth connection (since one of these filters will easily fit in and are not too expensive). But then remembering the point of using the small smoothing caps in the first place is for a low inductance power supply. I was wondering if the filter will add inductance and could it do more harm than good to the sound quality?
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Old 30th March 2007, 04:38 PM   #2
BWRX is offline BWRX  United States
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Join Date: Jan 2005
Location: Pennsylvania
I would suggest you try the amp with and without the IEC filter in place. If you don't like it with the filter in place you can always use it for another piece of equipment.
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