[Amps] AL-1200 Glitch Resistor

[Carl]

See the photos of the current big Ameritron series. They use a big carbon 
resistor that is in the parts list, sort of pricey however.

Carl
KM1H



----- Original Message ----- 
From: "Paul Christensen" <w9ac at arrl.net>
To: <amps at contesting.com>
Sent: Sunday, April 12, 2015 8:25 AM
Subject: [Amps] AL-1200 Glitch Resistor


> I'm working on an AL-1200 for a friend.  While finding the problem in the 
> PS, I noticed that a glitch resistor is absent in the design that would 
> otherwise limit HV fault current.  I verified this on both the schematic 
> and by tracing actual amp wiring.  I was expecting a resistor (e.g., 
> 50/50W) in the B- lead, or in the alternative, in the B+ lead with 
> appropriate isolation.  While the 3CX1200 may be statistically immune to 
> flashover, it seems a good idea to include one to ensure that HV fault 
> current is limited under all conditions.
>
> Has anyone here added one to their AL-1200?
>
> Paul, W9AC
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