[Amps] Resistor Before the Capacitor? (long)

[Paul Christensen]

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 at stanford.edu>
To: <amps at 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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