/diy/ - Do It Yourself

>>1058952
I'm up to old tricks and I thought I might as well post it here.

experimenting with a single ended power now, trying to learn this time instead of just following a schematic.
this is a 6p14, a russian equivalent of el84.
just as good, just cheap as chips

here I got a 6.66v bias over a 120 cathode resistor, meaning 55mA
at 250v platevoltage, this means its dissipating 13.4W ,which is over spec(12W)
I've run an diy orange ad5 with a similar output stage just as hot before and working fine.
I guess it just won't last as long biased this hot.

I'm going to try to bias it a bit colder tomorrow by increasing the cathode resistor.
lowering the bias current this way also lowers headroom, making distorting the outputstage easier. mite b cool