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Re: [Amps] AC wiring

To: amps@contesting.com
Subject: Re: [Amps] AC wiring
From: Steve Thompson <g8gsq@ic24.net>
Date: Sat, 15 Oct 2005 14:25:46 +0100
List-post: <mailto:amps@contesting.com>


Alex Eban wrote:
...guys, losses are ALWAYS quadrupled!
Losses follow the V^2/R law or, more appropriate I^2*R law. And current is
average current, not peak current!
Being picky, it's the rms current, not the average. In a cap input PSU, the rms current is often 1.5-2x the average you read on a meter, or calculate working back from the dc power going into your PA stage. The heating effect of that current is going to be 3-4x higher than the average value predicts.

Steve
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