Quote:
Originally Posted by Silicon
What is the function of R11?
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I was wondering that as well. I'm guessing it is to provide some sort of reference to the heaters which would otherwise be floating. This would normally be done with either a centre tap on the heater winding or an artificial centre tap created with a pair of resistors which would then be connected either to ground or an elevated DC voltage (such as the power valve cathode). I don't recall seeing it done like this before.