On Thursday 26 February 2004 17:33, Bill Turner wrote:
> Years ago I recall reading about an amplifier where the B+ supply was
> grounded and the cathode was "hot" with the B- supply. I'm wondering if
> that might have some advantages for high power amplifiers.
>
> Specifically, the pi-network output could be simplified by eliminating
> the plate choke. Here's how the output would look:
>
> http://www.dslextreme.com/users/teeaye/B+.jpg
>
> Believe it or not, this is a pi-network output circuit, just redrawn.
> The same component values would be used as with a conventional circuit.
Doesn't it do a lovely job of offering an alternative insight into how a pi
network matches between the antenna and plate. The load control is the lower
capacitor and provides a variable 'tap' up and down the tuned circuit.
Steve
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