Re: 110V 60Hz / 220V 50Hz power supply

From: Rainer Buchty <>
Date: Wed, 1 Feb 2012 23:18:38 +0100 (CET)
Message-ID: <alpine.DEB.2.00.1202012308060.2450@localhost>
On Wed, 1 Feb 2012, MikeS wrote:

> Frequency shouldn't matter to a power supply

That's not entirely true. The higher the frequency the smaller the 
transformer can be. That's one reason why switching PSUs are much 
smaller than their linear counterparts.

U_eff=sqrt(2)*pi*B*A*f*N shows the correlation.


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Received on 2012-02-01 23:00:19

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