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Old 23rd Apr 2017, 5:24 am   #171
Diabolical Artificer
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Location: Sleaford, Lincs. UK.
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Default Re: 807 (maybe) amplifier build. Now EL34

Thinking about this again, if you look at the schematic, with no 12BH7 present but the wiring and component's there, there is a path to ground via the 1k R, through diode, though the 12k R for DC of the ECC82 PS anodes.

With the 12BH7 in the socket warmed up and drawing current, the diodes turn off cutting the path to ground.

Panic over.

Andy.
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