Quote:
Originally Posted by ms660
Lower cathode temp=less noise? Just a nutty theory.
Lawrence.
|
More than likely Lawrence, But I think what's needed here is a bit of practice rather than theory. Looking for lighted valves and measuring HT voltages.
Theory does suggest that the valves are in fact lighting up or at least heating up. There's a volt drop across the heaters which means they're resistive and resistors work by generating heat and/or light.