>
>AG6K:
>> With AB1, no grid current is permitted. With DAF grid current is
>> permitted. When positive grid voltage is permitted, peak anode currents
>> increase substantially.
>
>SM3BDZ:
>Its quite true that the DAF design permitts grid current. Thats why you
>should compare the design
>rather to GG than AB1. When a GG amp, or a AB1 amp, is driven to excessive
>grid current,
>saturation and flat topping occurs.
>
>My assumption is that here we have a substantial different compared to the
>DAF design.
>When grid current increase due to high drive in a DAF amp, the screen
>voltage also increases
>and thus sets the roof higher.... That should improve distortion
>characteristics, and make the flat topping "softer" !?
>
>This is only a theory, but to me it makes sense. Please tell me if I´m
>wrong!
For linear operation, gain must remain constant.
- Rich..., 805.386.3734, www.vcnet.com/measures.
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