Voltage out of tube rectifier?

[Ryssen]

If I apply 260v in how much do I get out?
Is it the usual AC x 1.41 or?

 

[rayma]

Yes, but less the voltage drop of the 6Z4 (around 23V), and also less the 15V drop across the 100R.
So roughly 330VDC at Vcc.
https://frank.pocnet.net/sheets/127/8/84.pdf

 

[Ryssen]

I think it is this one:
https://frank.pocnet.net/sheets/112/6/6C4PEV.pdf
https://bms.isjtr.ro/sheets/095/6/6Z4.pdf

 

[Tom Bavis]

And the transformer's windings have resistance as well, secondary and reflected primary. The voltage drop is not easily calculated, since the current is discontinuous, large peak current for a portion of the AC cycle. Use the program PSU Designer from Duncanamps.com. Since it doesn't have a "hybrid" bridge rectifier, run it once with SS, once with tube bridge, average the two.

 

[Ryssen]

According to PSU Designer it only differs 4 volt between them.

 

[rayma]

Also your AC line voltage can vary widely, by 10% or more.
Not to mention the mfr tolerance on the winding ratio.

 

[v4lve lover]

Why not make a full diode bridge, and run the four tube sections in parallel? if the tube shorts internally, it wont take out the transformer.

 

[TG]

So roughly 330VDC at Vcc.

More like 250V. This is indeed a clone of Soviet 6Z4P.

 

[pblix]

I'm a big fan of PSUII, but its result always come out low for some reason. I'm also a big fan of 1N4007s🙂