Thanks,
As I understand it the CLC filter following R1 is the choke input filter and R1 is a series bleeder resistor to lower the voltage an appropriate amount. The safe (maximum) voltage for an 83 is 550V with a choke input filter. Per the data sheet @ http://www.pmillett.com/tubedata/HB-3/Receiving-Type_Industrial_Tubes/83.PDF, the series resistor should not be lower than 50 ohms.
All of the data sheets I looked at don't list a minimum voltage for the 83 rectifier and I know they have a uniform predictable voltage drop per the Radiotron Handbook. So given that I wouldn't use a resistor smaller than 50 ohms, I don't see what would be wrong with lowering the resistor value if the supply voltage was less to raise the overall voltage after the choke to where it was with the higher supply voltage.
Hoping to get a little more feedback,
Chris
As I understand it the CLC filter following R1 is the choke input filter and R1 is a series bleeder resistor to lower the voltage an appropriate amount. The safe (maximum) voltage for an 83 is 550V with a choke input filter. Per the data sheet @ http://www.pmillett.com/tubedata/HB-3/Receiving-Type_Industrial_Tubes/83.PDF, the series resistor should not be lower than 50 ohms.
All of the data sheets I looked at don't list a minimum voltage for the 83 rectifier and I know they have a uniform predictable voltage drop per the Radiotron Handbook. So given that I wouldn't use a resistor smaller than 50 ohms, I don't see what would be wrong with lowering the resistor value if the supply voltage was less to raise the overall voltage after the choke to where it was with the higher supply voltage.
Hoping to get a little more feedback,
Chris
Then it is a cap input filter?
This still doesn't address my question about voltage. I don't understand per your original email how the nominal inductance of a 330/10w resistor could be functioning as a choke (a super small one? especially if you use wire wound non-inductive types). But hey I'm wrong all the time.
Thank you,
Chris
This still doesn't address my question about voltage. I don't understand per your original email how the nominal inductance of a 330/10w resistor could be functioning as a choke (a super small one? especially if you use wire wound non-inductive types). But hey I'm wrong all the time.
Thank you,
Chris
It is a cap input filter. The 330R is certainly no choke but is there to limit the current through the input cap. A choke input would be a better idea.
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