One Power transformer to suppy two Eiclone channels?

[mesherm]

Andrea, Eric is right about the 5AR4s. One won't do.
I was going to use two 5AR4s in my latest amp but space didn't permit so I used diodes and a dropping resistor.
I would use two 5AR4s and TWO C354 chokes and caps so that each channel has the equivalent of an ST70 supply all to itself.

[Andrea80]

Hi all,

I've done some mistakes in my last post ... I think Yellow_Light_Colorz_PDT_06 .

I didn't specified that I would buy 2 new power transformers :) , but I don't know which must be the high voltage of secondary winding with tube rectifier solution.
I found from an italian trannies producer one with 390+390V 200mA, 6.3V 4A, 6.3V 4A, 5V 4A and another one with 380V+380V 200mA, etc.

Thank you so much
Andrea

[Shannon Parks]

Hi Andrea,

If you must use tube rectifiers on your high wattage amp, then go for the 390+390. You'll need every volt to get to the promised land. FWIW, I haven't looked at the voltage ratings of the glass rectifiers so that may be something to look at. You may end up using chokes in your power supply, too. Luckily, push-pull does a fantastic job with ripple rejection.

BTW, I assume these are power transformers center tapped and you'll use full wave rectification, right?

[Andrea80]

Hi Andrea,

If you must use tube rectifiers on your high wattage amp, then go for the 390+390. You'll need every volt to get to the promised land. FWIW, I haven't looked at the voltage ratings of the glass rectifiers so that may be something to look at. You may end up using chokes in your power supply, too. Luckily, push-pull does a fantastic job with ripple rejection.

BTW, I assume these are power transformers center tapped and you'll use full wave rectification, right?

Hi Shannon!

Yes, this transformer has 390V-0-390V winding, suitable for tube rectification .

____ 390V
|| C
|| C
|| C____ 0
|| C
|| C
|| C____ 390V

I will use Hammond 156R choke, with same resistance and inductance as Dynaco C354.

B+ without load must be about 485V?