Hi All
I just recapped and replaced the rectifier diodes on 2x of my vintage power supplies for the tube radio, and all the output voltage readings are way higher than the circuit diagram. I couldn't tell you what they were before because they were non working.
But looking at the original circuit diagrams voltage quotes and my DMM readings now, there is big difference.
Circuit Diagram
Pin 3 = -80V
pin 9 = 280V
pin 11 = 700V
pin 4 - 6 (heater) = 12.6VAC
Power Supply 1
Pin 3 = -107V
pin 9 = 380V
pin 11 = 870V
pin 4 - 6 (heater) = 13.4VAC
Power Supply 2
Pin 3 = -106V
pin 9 = 484V
pin 11 = 900V
pin 4 - 6 (heater) = 12.88VAC
Is this normal? Or is there some problems with the recapping or the replaced rectifying diodes?
Will it cause damage to use the power supplies as they are now with those readings?
What could be done about it? - add resistors to reduce the voltages?
Or any other ways?
Thanks in advance.
I just recapped and replaced the rectifier diodes on 2x of my vintage power supplies for the tube radio, and all the output voltage readings are way higher than the circuit diagram. I couldn't tell you what they were before because they were non working.
But looking at the original circuit diagrams voltage quotes and my DMM readings now, there is big difference.
Circuit Diagram
Pin 3 = -80V
pin 9 = 280V
pin 11 = 700V
pin 4 - 6 (heater) = 12.6VAC
Power Supply 1
Pin 3 = -107V
pin 9 = 380V
pin 11 = 870V
pin 4 - 6 (heater) = 13.4VAC
Power Supply 2
Pin 3 = -106V
pin 9 = 484V
pin 11 = 900V
pin 4 - 6 (heater) = 12.88VAC
Is this normal? Or is there some problems with the recapping or the replaced rectifying diodes?
Will it cause damage to use the power supplies as they are now with those readings?
What could be done about it? - add resistors to reduce the voltages?
Or any other ways?
Thanks in advance.
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