Re: LF: PA problem

[DK7FC <selberdenken@posteo.de>]

Am 08.11.2017 14:37, schrieb DK7FC:
> And i would add a 1000 uF electrolytic capacitor with a low internal 
> resistance (the good ones :-) ) near the Drain, in parallel to the 1 
> uF capacitor.
Sorry that was wrong. Actually there should be a small inductor between 
that large C and the drain, just a few uH, like others said before. That 
value is not so critical, it can be 10 uH or so.
73, Stefan

PS: In 2001 i built a 1 kW class E PA for 137 kHz using a single IRFP360 
and 80V DC. I also built a 13.8 V version using a IRF540N giving 100 W. 
But it has always been a high effort to get a good efficiency. Since 
many years i prefer class D PAs.