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From: "Tenho Hatonen"
Subject: Re: How to test a power t-former for Amp rating?
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
Date: Wed, 20 Nov 2002 14:07:57 GMT
NNTP-Posting-Date: Wed, 20 Nov 2002 16:07:57 EET
Organization: Sonera corp Internet services
> HELP. I have a large collection of power transformers taken out of
> larger wattage power amps and would like to utilize them in my projects
> of buying new all the time but have been unable to figure out how to test
> secondaries for current rating? Voltage was easy, but ohm's law didn't
> do the trick. Any help would be greatly appreciated. Thanks!
If you can measure the wire diameter of the secondary, you can calculate the
nominal current for that coil by using the approximation 2.5 A/sq mm. Put
to a equation form
Inom=(2.5*3.14*D^2)/4 [A] , where D= wire diameter in [mm].
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