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zuma06 from what I can tell, this would rectify the high voltage AC from a transformer to high voltage DC for the vacuum tube (valve) plates. to give you the authentic "sag" that tube rectifiers produce. as opposed to more efficient solid state rectifiers.

2020-11-27 04:27:54 Hilfreich (0)
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Dobbyman_69cx yes,these need external battery,the battery is not included.

2020-01-03 07:37:52 Hilfreich (0)
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