19-11-2018, 03:10 PM
Never having seen a P type valve used in the wild, I've always been uncertain what the 300mA means as regards a P type valve - 300mA max? And how the Dickens would you regulate a series chain? A bit higher mains and current goes up no? Light dawn's, use a big resistor. A Mullard data book I have gives Vh too, for P types, some are 15v ish, others 21v and so on, so 15v "types" could be run all together connected in parallel. Or am I just talking out of my hat?
Just to confuse things more on the subject of E/PL84's , am sure I read somewhere that the PL84 is a beam tetrode (even though it's called an output pentode by Mullard), not a true pentode like the EL34.
After you've found a use for P types perhaps someone could come up with a use for EF80's.
Andy.
Just to confuse things more on the subject of E/PL84's , am sure I read somewhere that the PL84 is a beam tetrode (even though it's called an output pentode by Mullard), not a true pentode like the EL34.
After you've found a use for P types perhaps someone could come up with a use for EF80's.
Andy.
