[AMRadio] Mod Transformer Available

James M. Walker chejmw at acsu.buffalo.edu
Tue Sep 27 21:59:07 EDT 2005

I guess I am still confused, Sigh but I am going to drop the request
clarification, as the clarification seems to be muddled!

Donald Chester wrote:
> >
> >The ratings are 5500 primary 1.14 KVA, and 5500 secondary
> >198 Amp DC.
> >
> >Don,
> >I don't know what you mean by don't add up! The discussion
> >was pertaining to the use of this particular transformer, in
> >conjunction with a specific set of tubes, and RF stage.
> >What doesn't add up?
> The stated ratings of the transformer.  1.14 kva means it is rated for about
> a kw of audio (theoretically 1140 watts with perfert power factor)  just
> call it a kw to account for some inevitable phase shift.  That means it
> should be designed to modulate 2 kw DC input.  But with the current rating
> of .198 amps, to get 2 kw DC input, you would need 10,101 volts on the
> plate.  The rated load impedance is 5500Ω.  10 kv @ 198 mills is
> 51,152Ω
> Don K4KYV
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