Re: LF: How can you tell if a Class D amp output transformer is starting

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Re: LF: How can you tell if a Class D amp output transformer is starting

from [Andy Talbot]

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To:	LineOne <[email protected]>
Subject:	Re: LF: How can you tell if a Class D amp output transformer is starting to saturate?
From:	Andy Talbot <[email protected]>
Date:	Thu, 3 May 2018 15:00:36 +0100
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By measuring the voltage across the winding using a scope, then seeing what Bmax is using teh equation

Vrms = 4.44.F.N.A.B

F Hz N turns A core cross-sectional area in metres^2 B tesla

If B works out higher than about 0.1 for a ferrite core, then you are approaching saturation

Andy

www.g4jnt.com

On 3 May 2018 at 14:46, Chris Wilson <[email protected]> wrote:

Hello LF'ers

In say a W1VD power amp, or in general, how can you test if the output transformer is
starting to saturate please? Thanks.

http://www.w1vd.com/137-500-KWTX.html

--
Best regards,
Chris mailto:[email protected]

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