Hi,
I have a tech building a DHT single ended amp for me. His power supply approach is CLC and 6SN7 as voltage regulator. I asked him about choke filter and he said it creates more ripple and will have hum on the output. The plate voltage for the output tube is 450V with 1.25A and the filament voltage is 7.5V.
What I read online is choke input filter is better. What’s your take on the 2 approach for designing the power supply?
TIA
I have a tech building a DHT single ended amp for me. His power supply approach is CLC and 6SN7 as voltage regulator. I asked him about choke filter and he said it creates more ripple and will have hum on the output. The plate voltage for the output tube is 450V with 1.25A and the filament voltage is 7.5V.
What I read online is choke input filter is better. What’s your take on the 2 approach for designing the power supply?
TIA
Given the same total PSU capacitance, a CLC will have less ripple than a choke input. So what? You are not constrained to have the same total capacitance.
Choke input makes better use of the transformer and delivers a lower DC voltage from a given transformer. This may or may not be an advantage.
Both approaches can be made to work. Both can be done badly.
Choke input makes better use of the transformer and delivers a lower DC voltage from a given transformer. This may or may not be an advantage.
Both approaches can be made to work. Both can be done badly.
Thank you for the inputs. Greatly appreciated. Also, if I need around 400V-450V for plate voltage, what’s the minimum voltage requirement for the power transformer if LCLC filter is used?
400V/0.9 = 444V? Add a bit for voltage drop, so you need 450-500V Vrms for 400-450V DC via choke input.
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