>--- 2 <email@example.com> wrote:
>> >How 'bad' would they be? Even in a
>> >push-pull circuit? With NFB ???
>> // Push-pull is a 5-gallon bucket of worms.
>How so.... aside from the extra complexity of
>bandswitching, load matching, balancing, etc??
// Bandswitching is the problem.
>> >I intend to build a grid-driven setup with bias and
>> >screen supplies
>> // If you go with grid driven, better wear
>> disguises to ham conventions
>> and swap meets. Name/Call badges are not a good
>> idea either.
>> Grid-driven 813s are reliable splatter generators.
>Interesting. Is this a characteristic of the tube or
>one of poor design or of poor loading/driving
// No tube or transistor is linear in Class-B. Some Zero Signal Anode
Current (ZSAC) is needed, which means Class AB_.
>Would you think cathode driven operation with, or
>without screen/bias supplies would be best?
// There is no difference in G-G gain between grid and screen bias
supplies and cathode biased.
>(Not necessarily what would be easier) I ask because it
>seems to some, G-G means grids strapped to ground and
>to others, it just means RF grounded.
// Either way is ok. 813s are apparently fairly immune to parasites.
>Thanks for your thoughts.
ur welcome, Randy
- R. L. Measures, 805.386.3734, AG6K, www.vcnet.com/measures.
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