|[AMRadio] Transformers Revised|
ars.w5omr at gmail.com
Mon Feb 19 00:51:47 EST 2007
On 2/18/07, Rick Brashear <rickbras at airmail.net> wrote:
> I just made a discovery. The BT-20-A broadcast transmitter uses several
> filament transformers for the various stages. All of them are rated at
> 100 volts AC primary. All of the primaries pass through a voltage
> adjusting rheostat and volt meter to insure proper filament voltage on
> all tubes. So, my earlier request for a 115 vac primary filament
> transformer was wrong. It needs to have a 100 vac primary.
I've seen a lot of filament transformers that had 0 - 100 - 105 - 110
taps on the primary, with one secondary. They're out there, Rick.
What voltages do you need? I might have one.
Operating your AM rig without a scope
is like driving our car at night without headlights.(~K4KYV)
73 = Best Regards
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