6AU5GT

[sam8888ysl]

A 6AU5 triode strapped is excellent for driving large transmitting tubes like the 845.

do you have any 6AU5 schematic or some triode connected fig for operate.

 

[astouffer]

You should be able to replace the 6AH4 with your 6AU5 without changing anything. I did testing with the 6AU5 and got good results but decided to use a real triode instead. If the current is too high or low adjust the 750R cathode resistor.

 

[boergars]

Any progress in the construction of the 6au5 PP?

 

[sorenj07]

yes, any news? I like these tubes..

 

[slideman82]

I'm pretty worried, I wanted to use more that 400V, probably 450, but I don't know the screen limit... it's supposed to be 200 and there are 300V in that schematic!

 

[jerluwoo]

Tom it looks like these would work well in the schematic in post #18. Would just need to change Rc to 680 ohms so you get about 37mA plate current and about 10 watts on the plate which is the rating for these tubes. Looks like a good place to start experimenting. Attached are the plate curves with the red line as the 10 watt marker and the blue as the operating point.

 

[spswmsw]

I just saw a little collection of NOS 6AU5GT Sylvania's in the old boxes and stamped USA on the glass. I purchased one to take home and fiddle with.
Have you seen any SE or Push Pull designs using this handsome little TV tube? I bet it would make sweet audio? Any comments would be great!
Cheers,
Shawn.

Hello!
I've just build the SE amp with these real handsome little tubes.
I used the Russian 6Ж7 (6J7) pentodes as drivers and СГ3С (0C3) and СГ4С (0D3) voltage regulators to feed the screens. The sound is really great! The anode load of 6AU5GT is 2k.