08-04-2025, 07:42 AM
Electrolytic capacitors were rated in "working volts" (WV) and could take a certain amount of overvoltage. In theory, the voltage could be more than 150, but in practice, there is a rather high voltage drop across a 35W4, 35Z5 or similar tube. These tubes took a longer time than a 5Y3 or similar tube to heat up to full output. I would stick with 150WV or 160WV. I wouldn't go above 200WV
When I was young, the practice was to not use an electrolytic capacitor with a much higher working voltage value because the cap would not "form" or have the same capacity at a lower voltage than rated for. This was a property of electrolytic capacitors, not of the paper-foil capacitors which should be replaced with caps having the highest practical voltage value.
When I was young, the practice was to not use an electrolytic capacitor with a much higher working voltage value because the cap would not "form" or have the same capacity at a lower voltage than rated for. This was a property of electrolytic capacitors, not of the paper-foil capacitors which should be replaced with caps having the highest practical voltage value.
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Best Regards,
MrFixr55
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