power transformers for 6SN7-KT88 PP

[pc1093]

Hi All,
I got a diagram about 6SN7-KT88 PP. I find that 4XKT88 I(f) need 6.4A and 4X6SN7 I(f) need  2.4A.
However, the diagram showing that the transformers got 6.3V @ 5A.
1. Is the transformer only work for one channel?
2. are there any power transformers that support both channels in one?

[Latole]

This power supply (can only) feed one channel. We see 2 X KT88 and 2 X 6SN7


Hammond transformers don't have one PT to do the job of  two PT you need.
Their bias voltage are too low. You have to tap bias on H.V winding.

https://www.hammfg.com/electronics/transformers/classic/300?referer=787
 

[DummyLoad]

for two channels use hammond 379WX will work for 2 channels, however, you will need to change the B+ rectifier to full wave rather than a bridge.


--pete

[pc1093]

if i use one power transformer,such as hammond 379WX, need i change the choke to 10H@1A?

[DummyLoad]

if i use one power transformer,such as hammond 379WX, need i change the choke to 10H@1A?

yes.

--pete