03-07-2017, 12:56 AM
First point. It's my birthday and here I am just finished doing theory after work all day on the boat. I'd been puzzled by a letter -C+ and 2 circles on a grid. Turns out here: "in early radio, batteries were the prime source of power - The A battery provided the filament voltage, the B-battery furnished the B+ or the Voltage to the plates of the tubes, and the C battery provided the grid-bias voltage for the tubes."
So that solved my riddle. Normally I would see a battery symbol at the grid.
The confusion on Amazon I think was DC grid bias as opposed to push pull. I would myself give the nod to the book writer that a grid can be pushed into positive values. Sure, the norm is a fluctuating negative grid potential but the class C or B amps may differ. I can't comment on transistor push pull.
Yes, agreed on electron flow - alternators used to give me headaches as you have the windings and the diode bridge.
I ought to be eating cake.
So that solved my riddle. Normally I would see a battery symbol at the grid.
The confusion on Amazon I think was DC grid bias as opposed to push pull. I would myself give the nod to the book writer that a grid can be pushed into positive values. Sure, the norm is a fluctuating negative grid potential but the class C or B amps may differ. I can't comment on transistor push pull.
Yes, agreed on electron flow - alternators used to give me headaches as you have the windings and the diode bridge.
I ought to be eating cake.
