Do the math.
A reactance of 10 times the input impedance of the tubes is sufficient to
have the choke "invisible" to the input RF.
Carl
KM1H
----- Original Message -----
From: "John Farber" <kg6i@comcast.net>
To: <amps@contesting.com>
Sent: Friday, June 28, 2013 12:02 PM
Subject: [Amps] Help constructing filament choke for pair of 3-500Zs on 6 m
I could use some info on constructing a suitable filament choke for a pair
of 3-500Zs on 6 m, my current amp project. My gut feeling is a standard
choke design for 80-10 would not be correct due to too much inter-winding
capacitance would effectively bypass the RF around the choke and into the
filament transformer. Use of the standard ferrite rod as a coil
form/inductance magnifier would also be excessive. So what are folks using
in this type amp?
Thanks, John
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1432 / Virus Database: 3204/5947 - Release Date: 06/28/13
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|