It's a real 50V
- Paul
At 06:47 AM 12/19/2013, Carl wrote:
Is that a real 50V at the tube or is there a leaky filter or other
cap in the circuit? Or a solder joint in the filament choke,
socket, etc adding resistance?
Carl
KM1H
----- Original Message ----- From: "Paul Baldock" <paul@paulbaldock.com>
To: <amps@contesting.com>
Sent: Wednesday, December 18, 2013 2:48 PM
Subject: [Amps] GS35B Idle Current drifting up.
I've been running a GS35B for a year or so. Initially with B+ at
4KV I had the bias voltage set at 30V and an idle current of 200mA.
The idle current has been slowly drifting up over time. Now it
takes 50V of bias to get the idle down to 200mA. I can still easily
get 1500W PEP out. Any idea what's happening?
- Paul KW7Y
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