Hello,
I am a tube-noob. And probably asking some stupid question.
I have a 6DJ8 running in a low voltage application. (15V) In this application, heater supply is diverted from the 15V. I am using LM337 in current source setup to give me about 300mA like the tube spec sheet tells me.
I believe I am feeding the tube with that much current should be OK with the tube. But then I checked the voltage drop across the tube heater; which is running around 11.5V or so.
I feel the voltage drop is coming from the heated filament which is compensating for the heat emission to the manageable level. But the I am no specialist. I am pretty stumped at this time.
Thanks in advance,
T
I am a tube-noob. And probably asking some stupid question.
I have a 6DJ8 running in a low voltage application. (15V) In this application, heater supply is diverted from the 15V. I am using LM337 in current source setup to give me about 300mA like the tube spec sheet tells me.
I believe I am feeding the tube with that much current should be OK with the tube. But then I checked the voltage drop across the tube heater; which is running around 11.5V or so.
I feel the voltage drop is coming from the heated filament which is compensating for the heat emission to the manageable level. But the I am no specialist. I am pretty stumped at this time.
Thanks in advance,
T