Is it safe for a rectifier tube to be tested at line voltage unloaded (no tubes in) when troubleshooting or firing a fresh build/overhaul? Other than exceeding voltage ratings on electrolytics is there anything else to be concerned about? Thanks in advance
When I build an amplifier I test the power source with only the rectifier tube installed. That way I can check the HV and other connections for proper power. Be advised the HV will be a little higher because you won’t have a load on it.
Roger that, thanks for the response. Admittingly, I posted this question thinking I would get a notification when someone responded and I was mistaken.
I fire new builds the same way unloaded but am always a little unsure about keeping the tube rec held unloaded for too long especially when ecap maximums are being met or exceeded.
Thanks again for your response. I just found this forum I have been watching Mr Carlson for years he is the absolute best!
Late reply, but yes the tube won’t mind the extra voltage unlike the caps. You could also use a fixed resistance to dummy load the supply as well (within reason).
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