use special transformer(CVT)
73!Hsu
----- Original Message -----
From: "Mark K5AM" <k5am@zianet.com>
To: <amps@contesting.com>
Sent: Sunday, January 25, 2009 1:30 AM
Subject: [Amps] Regulated DC heater
>
> Gary ZL2IFB wrote: I'm contemplating how best to
> regulate the filament voltages on my amps, and
> curious as to whether it's possible to
> use a regulated DC supply . . .
>
> - - - - - - - - - - - - - -
>
> I have been using regulated DC on a 4CX1000A
> heater for 14 years, with no problems. Circuit
> details are in the two articles listed under
> "Amplifiers 144 MHz" at
> www.zianet.com/k5am/publ.html
>
> 73,
>
> Mark, K5AM
>
>
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