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Re: [Amps] To rewind or not? (3KA resonant filter choke)

To: "Jim Barber" <>, <>
Subject: Re: [Amps] To rewind or not? (3KA resonant filter choke)
From: "Carl" <>
Date: Thu, 5 Jan 2012 12:00:36 -0500
List-post: <">>
Id start with a scope and see what is happening as well as doing a hi pot on 
the resonating and filter cap. Also measure the resonating cap; if its 
drifted up then the circuit could be resonant too close to 120Hz.

Dont forget to crank down on the choke lamination hardware.


----- Original Message ----- 
From: "Jim Barber" <>
To: <>
Sent: Wednesday, January 04, 2012 5:41 AM
Subject: [Amps] To rewind or not? (3KA resonant filter choke)

> The "chatter" from my Henry 3KA's resonant filter choke is worrying me, so 
> I'm wondering whether to have it rewound and replace the cap, do that and 
> also rewind the plate xformer, or just throw it all out and stick in a 
> more modern 3KV 1A xformer, a bridge and a larger filter cap. By the time 
> I pay to ship the iron aound the country I suspect the last option may be 
> the least expensive, but price isn't necessarily the only consideration 
> here. I want to run it on a regular basis for another 20 years, and 
> perform as well as it does now.
> Opinions?
> Thanks,
> Jim, N7CXI
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