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Results tagged with vacuum-tubes
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user 28327
This tag is for questions relevant to vacuum tubes, also known as thermionic valves or simply valves.
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Question about low voltage from mains for tube amplifier 811h
Edit: So I guess what i really want to know is more technical question regarding 572b tubes. What plate voltage is minimum to safely drive 572b tubes? what is lowest filament voltage to optimally driv …
