24-07-2017, 01:30 PM
I'll comment later. By the way ARRL wasn't quoted in my first post - it was a review comment of a different book made on Amazon. As I haven't read the book that was reviewed, I can't judge if the writer was talking about AC positive signals driving the grid into positive values.
As ARRL was mentioned though, they mention operating angles in degrees.
What had never sunk in in the past was that voltage amplifiers use very high load resistors, to create large voltage drops across the load.
For power amps the operating angle maybe helps best with 180 degree operation of each triode at B class but 360 degree plate (or anode) current for A class.
As grid negative was mentioned the way I always viewed it as direct short of grid to chassis should cut off the valve. A resistor between grid and chassis should lessen the negative bias.
As ARRL was mentioned though, they mention operating angles in degrees.
What had never sunk in in the past was that voltage amplifiers use very high load resistors, to create large voltage drops across the load.
For power amps the operating angle maybe helps best with 180 degree operation of each triode at B class but 360 degree plate (or anode) current for A class.
As grid negative was mentioned the way I always viewed it as direct short of grid to chassis should cut off the valve. A resistor between grid and chassis should lessen the negative bias.
