Quote:
Originally Posted by turretslug
Contemplating the sacrifice of any veteran toob may be painful, but the 7475/CV188 is fairly commonplace and not terribly in demand with a typically compact B4 base- and the device itself could then be treated as a wire-in reference if you don't like to contemplate discarding it!
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Dead no emission B4 base rectifiers are pretty common and will supply the base.
Cheers
Mike T