Hi George,
To Jim's earlier point, he did indicate that his series R between the
full-wave rectifier and filter C needed to be augmented by an arc-fault
resistor after the filter C for the very reason you describe.
Paul, W9AC
----- Original Message -----
From: <gdaught6@stanford.edu>
To: <amps@contesting.com>
Sent: Monday, February 08, 2010 1:38 PM
Subject: Re: [Amps] Resistor Before the Capacitor? (long)
> Several people have contributed to this topic. I'm not sure they have all
> understood
> the function of a "glitch" resistor, at least MY idea of the function of a
> glitch resistor.
>
> Putting the resistor "before the capacitor" will certainly limit the huge
> start-up
> charging surge, thereby helping to protect the rectifier diodes, which
> cost $0.11 each
> the last time I bought a hundred of them. It will also limit the DC
> (steady-state)
> current supplied to an HV short, like an arc in a tube. But the full
> energy stored in
> the capacitor WILL BE AVAILABLE to vaporize some bits inside your tube.
>
> The tube costs well over 11 cents, so I choose the "after the capacitor"
> position for
> the resistor.
>
> 73,
>
>
>
>
> George T Daughters, K6GT
> CU in the California QSO Party (CQP)
> October 2-3, 2010
>
>
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