>My engineer has nearly completed one of Fritz Raab's class-E PA's with a
>pair of 5 dollar (IRFP450) FET's.
>
>100v rail, 92% efficient, 750w out (albeit only on 160m) and runs stone
>cold. This together with a class-S AM modulator, own design.
>
>Shame this probably couldn't go into ham production. It's far to twitchy
>to tune.
>
>Phil G4ZOW
What does it do into 3:1 all phases? With such a big FET you might get away
with it, but I'd wear safety specs to stop bits of exploding package going
in my eyes :-)
Steve
--
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|