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Article #912

Re: Transformers in Audio Power Supplies

#912
From: David Barrera
Date: Wed, 05 Oct 1994 15:15
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In article <niall-0510941103460001@47.34.3.64>, niall@bnr.ca (Niall Gallagher) writes:
> In article <36ue41$880@bcarh8ab.bnr.ca>, stud7b11@bcars564.bnrottawa wrote:
> 
> 
> > In an amplifier circuit that I am currently fiddling
> > with, the spec. says to use a toroidal transformer in the
> > power supply.  Why is this important?  How would I be
> > degrading the performance of the amp with a plain-vanilla
> > transformer?
> 
> Less flux leakage, most likely. The leakage could cause 60Hz noise to be
> induced in the amplifier. Electronically, there is little difference.
> 
> Niall
> 
> -- 
> Niall Gallagher
> niall@bnr.ca

	Try this! Take same turn toroidal transformer and the plain-vanilla
one and measure the impediance.  If your multimeter doesn't have that function
then try getting a ruff estimate by setting the meter on the ohms measurement
and get the greatest peak.  Did that make any sense? 

	Tell us your results,
	Dave
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From: barrera@bnr.ca (David Barrera)
Newsgroups: rec.audio.tech,bnr.general,sci.electronics
Subject: Re: Transformers in Audio Power Supplies
Date: 5 Oct 1994 10:15:36 -0500
Organization: Bell-Northern Research, Richardson, TX
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