Behold, Uwe signalled from keyed 4-1000A filament:

I am looking for info regarding a simple power supply with a full wave
rectifier (I got a 6X5).
Mainly I need to know the 'to be expected output voltage' (capacitor
filter)for any input. I don't have info on that. Do the formulas for
solid state rectifiers apply??

Yup! However tube rectifiers don't like large caps. 10-20uF should be
enough.

If you need better regulation or hum reduction, use a higher tranny
voltage and a choke-input filter.

--
Gregg
*It's probably useful, even if it can't be SPICE'd*
http://geek.scorpiorising.ca