[Amps] Re: AB1 v. AB2

[Rich]

>> >You can build an audio amp or modulator that is capacitively coupled
>> >to the grids of the output tube and there is nothing you can do to drive
>> >it into AB2 (grid current).
>>
>> How is DC grid bias applied to the grids?
>
>Separate minus voltage power supply fed via high impedance (resistors) to
>prevent loading down the drive voltage...
>
**  What stops DC grid-current from flowing through such resistors 
whenever the grid is driven positive?


-  Rich..., 805.386.3734, www.vcnet.com/measures.