On my YC156 amp, I have a pair of chokes, going from the heater
connections to banana sockets, with bypass caps, on the rear panel.
Makes it simple to measure the voltage at any time.
73, Alek, VK6APK
On 6/06/2022 12:19 am, Victor Rosenthal 4X6GP wrote:
Good idea.
73,
Victor, 4X6GP
Rehovot, Israel
CWops #5
Formerly K2VCO
https://www.qsl.net/k2vco/
On 05/06/2022 18:41, Steve wrote:
Tack a 10k resistor to each filament pin, 10nF decoupling between the
loose ends then twisted pair out to your DVM. Should filter out the
rf and you don't have to worry about shorting the wires together.
Steve G8GSQ
I did measure the voltage at the tube pins. I haven't measured it
while transmitting, because the RF drives my meter crazy. I assume
the voltage drops a bit. Unfortunately I no longer have my trusty
analog voltmeter. I wish I did.
I'll measure the line voltage. But the only thing I can think of
that would cause that to increase after long transmissions would be
if the breaker on the line heated up and lost resistance. I have
never heard of that!
73,
Victor, 4X6GP
Rehovot, Israel
CWops #5
Formerly K2VCO
https://www.qsl.net/k2vco/
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