daijiiwata
New Member
being repaired:R.O.430,453,DWLyric(1976)
Posts: 30 
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Post by daijiiwata on Dec 22, 2022 1:51:06 GMT
Looking at some of the tube amps in the R.O., I sometimes come across capacitors with a withstand voltage of 475V, but if I ever have to replace them, would 450V be okay?
Or should I strictly choose 475V? Or should I use 500V to ensure a good margin?
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Post by jukenorman on Dec 22, 2022 9:43:45 GMT
Impossible question to answer in broad terms! 500 (or higher) and 475V would definitely be OK but to use anything lower you would really need to examine the circuit and make a technical judgement. Most times the margin is reasonable but on occasion there is very little margin.
Norman.
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daijiiwata
New Member
being repaired:R.O.430,453,DWLyric(1976)
Posts: 30
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Post by daijiiwata on Dec 26, 2022 7:20:55 GMT
Thank you for your comments, Norman Sensei.
As this is a bypass capacitor for the plate of each bulb, I will try to understand the relevant circuit in depth before making a decision.
More importantly, the capacitor in the double voltage rectifier circuit was a little hot,
so I will give priority to that one and deal with it first.
Have a good New Year!
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