D'Oh! You're right Bob...RMS=DC "heating" value...Shoulda
thought about it some more before posting.
Thanks,
Charlie
On Mon, 26 Jan 2009 08:53:37 -0800 (PST) Robert Groh <rgroh@swbell.net>
writes:
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@juno.com>
To: amps@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
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