Glen,
You may want to rethink that headroom. The transformer will tend to have a bit
higher voltage if running at less than rated load.
And higher than optimal fil voltages equate to shorter tube life. In addition,
there is less inrush trama to the filament if you
have a matched transformer. I think the latter is subject to some debate
however.
In any event, you would want to trim the actual fil voltage with a series
resistor for max life.
73, Jeff ACØC
www.ac0c.com
-----Original Message-----
From: Glen Zook
Sent: Tuesday, May 24, 2011 10:37 PM
To: amps@contesting.com
Subject: [Amps] Filament transformer needed
I need a 12.6 VAC @ around 10 amps filament transformer for my pair of GS-31b
linear. The tubes require a total current of just
under 7 amps so I would like a little "headroom". I would prefer a 220 VAC
primary since I am planning on running the amplifier
from 220/240. However, I can use a 120 VAC without any problems.
Have various things to trade or, heaven forbid ( :>) ), actual cash!
Glen, K9STH
Website: http://k9sth.com
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|