Re: Mullard 5-10 amplifier
The reservoir capacitor really needs its own separate path back from the negative terminal to the transformer. This capacitor gets charged in a series of hefty current pulses; and those current pulses will create a voltage across the return connection. If its charging circuit is effectively in series with anything, then that voltage will appear downstream of that connection.
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If I have seen further than others, it is because I was standing on a pile of failed experiments.
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