[sdiy] OT: 2x6CG7 (or other dual medium/low-mu triodes) as bridge rectifiers?

[anthony]

I think I tried to post a message about this yesterday and it didn't go 
through.

So moving on...

Have any of you ever experimented with using 2 dual triodes that can handle 
a decent amount of current as a bridge rectifier? I have 2 6CG7's and 2 
8CG7's. I thought about using the 8CG7's and use a separate 9VAC transformer 
(and make sure it's close to 9VAC, since the 8CG7 is rated for 8.4VAC - a 
small hi-watt resistor might help...). I have a 300VAC transformer 
(non-center-tapped so I can't use a normal fullwave rectifier) that I know 
can handle a lot of current demand because it powered about 25 tubes like 
12AX7's, 12AU7's, 12AT7's, 6EW6's, 6AU6's & 4 EL84's as current amps for 
voltage regulators.

I want to use it for a 20-50 watt amp. I thought about using a big damper 
like a 6DW4, but I don't have any Novar sockets. I DO have 9-pin miniature 
noval sockets though. Of course I could clamp up the 6DW4 and solder wire to 
socket pins and use them as flying leads, but if there'd be any great 
advantage of trying to use triodes as diodes in a bridge, then I'd want to 
do that. I mean I think dealing with the halfwave ripple from a big damper 
should be fairly simple. I thought a 150uF cap wouldn't be too big for a 
6DW4. It's too bad they don't tell you these things in the datasheets since 
they assume you'll be using it as a damper in a TV. Maybe a choke would be a 
better filter. I want to save my 10H choke, but I think I have a 3H choke 
with a lot less resistance... But with a bridge I could probably get away 
with 20uF caps in a couple pi networks...

Man I've been having "Valve's on the Brain" for the past few months. I think 
it was finding that Bakelite encrusted Wards Airline radio with the 6V6GT 
and the 5Y3GT that did it.

I promise to post a Synth-DIY message soon.

Maybe I'll bring up my idea again about using Ken Stone's 74C922-based 
Pedalboard controller as the core for realtime performance arpeggiator and 
maybe even sequencer. I have all of these latches and synchronous counters 
around begging for a project like this...