[Amps] Regulated DC heater

[Robert Groh]

I don't think so, Charlie.  The filament AC voltage given by the manufacturer's is the 'AC RMS' value and hence is (given no distortion in the AC waveform) identical to the DC value. Bottom line: the two values should be the same.

73
Bob, WA2CKY




________________________________
From: Missouri Guy <n0tt1 at juno.com>
To: amps at contesting.com
Sent: Monday, January 26, 2009 10:09:38 AM
Subject: Re: [Amps] Regulated DC heater

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