Quote:
Originally Posted by timmy
What I find odd is with the resistors off pin8 there’s 138v and at the same time there is -7v on pin 8 and just touch the resistors to pin 8 and drops right down to like 63v where is this -7 volts coming from.
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This is not unusual, take a look at any given tube grid that is not pulled high to bias on a schematic, and you will note that they tend to have a negative voltage on it, so it stands to reason that if you float it, it will go negative.
Examples.
pin 2 V10B , pin 9 V12A