You should have used the B&W 852 with lower inductance but 60 to 65 %
efficiency is good for a
Class AB linear.
-----Original Message-----
From: Bruce Lanning [mailto:blanning@acadia.net]
Sent: Tuesday, October 11, 2005 10:28 AM
To: amps@contesting.com
Subject: [Amps] Low power output from 4-400A linear
Several years ago, I built a GG amplifier using a pair of 4-400A. The grid
and screen are grounded at the tube socket.
I feel that the power out is quite low. Below are some of the operating
parameters:
Measured power out: 855 watts
Power input: 1216 Watts
Ep:3200 Volts
Ip: 380 Ma.( at max output)
Ig: 250 Ma.
Eg: Bias 00
Static Ip: 120 Ma.
I am using the B&W Pi-network, model 850A output tuning inductor
..
I have checked the tube filament pins for a poor solder joint.
They both looked OK, but I resoldered them to no avail.
Maybe someone out there could throw some light on my problem, or if I even
have a problem...
_______________________________________________
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
|