[TenTec] 422 Centurion blowing fuses...

Bob McGraw - K4TAX RMcGraw at Blomand.net
Sun Feb 2 21:19:22 EST 2014

Yep, two transformers.  One is HV only the other has the filament and LV 
windings.  Both transformers have two windings on the primaries.

As to the HV being turned on separately, either this is a modification, or a 
very early amplifier unknown to me.  My later two amps would apply the HV 
when the power switch on the underside was turned on.  The fan came on at 
the same time.  The front panel, Standby/Operate switch, handles the control 
between the RX/TX commands via the QSK board.

----- Original Message ----- 
From: "Jim Brown" <k9yc at audiosystemsgroup.com>
To: <tentec at contesting.com>
Sent: Sunday, February 02, 2014 4:37 PM
Subject: Re: [TenTec] 422 Centurion blowing fuses...

> On 2/2/2014 2:03 PM, Bry Carling wrote:
>> Nope. The power switch only sends power to pilot lamps and filaments on 
>> mine. The standby switch energizes relays that apply primary power up the 
>> HV transformer.
> So you're saying that there are two transformers, one for filaments and 
> low voltage, another for high voltage?  Interesting. The Titan 425 has a 
> single power transformer with both HV and LV secondaries.
> 73, Jim K9YC
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec

More information about the TenTec mailing list