[Amps] Regulated DC heater

[Missouri Guy]

Hi Gents,
 
Just for some future info here....If I use regulated DC to power 
the filaments on any tube, and let's say the required voltage is
5 volts AC, shouldn't (or couldn't) the 
DC value be 5 x .707= ~3.54 VDC?
 
Thanks,
Charlie, N0TT
 
On Sun, 25 Jan 2009 06:29:11 +0800 "Hsu" <hsu4qro at gmail.com> writes:
>  use  special transformer(CVT)
>       73!Hsu
> ----- Original Message ----- 
> From: "Mark K5AM" <k5am at zianet.com>
> To: <amps at 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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