With screen connected to AC ground, the top valve is in triode mode.
Yes, you avoid the ripple. Choice of resistor and cap quite crucial
though.

cheers, Ian


"robert casey" wrote in message
nk.net...


Thaks Robert!

/me model addict :-)

I did the SRPP triode/pentode thing (6GH8A) and found great PSRR
by tying
the screen bypass cap to ground, rather than cathode. Is that the
way
you've gone?

Hi Gregg, that's what I did, bypass the screen to ground.
I figured that instead of triode connecting the pentode,
I'd make the circuit "think" that the top tube was
a triode with its plate connected to a well filtered
supply.