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[AMPS] Discharge energy

To: <amps@contesting.com>
Subject: [AMPS] Discharge energy
From: g8gsq@qsl.net (Steve Thompson)
Date: Mon, 8 Oct 2001 08:09:54 +0100
>From Phil, K5PC:
>The value of the glitch resistor is
>selected to limit energy discharge from the filter caps to 50 joules,
>and the wattage of the glitch resistor is selected to keep it from
>self-destructing while the breaker is in transit.

First of all, please can I stress that my comments are NOT intended as
specific to Phil - his posting contains a comment I've seen a number of
times, which might appear in some manufacturer's info and which puzzles me a
bit. Phil's posting gets used purely because I've chosen this moment to make
my comment.

The energy in the filter caps is defined as 1/2*C*V^2. I'm puzzled as to how
a glitch resistor allows the *energy* in a discharge to be controlled. To my
mind, it can only set the peak current and the time constant.

Steve


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