6 Apr
2009
6 Apr
'09
8 p.m.
One is a DEC 1110714 bridge rectifier and the other is
a MJ900
transistor. I think I've sourced the MJ900 but can't find anywhere
stocking the 1110714.
Does anyone know an alternative non-DEC part number for the rectifier?
Are you sure it's a _bridge_ rectifier? I thought you said it was a TO3
can, DEC often used a double-diode in that case (common cathode to the
case, anode to the 2 pins -- sort of a semiconductor version of an EZ80
:-)) as a biphase full-wave rectifier with a centre-tapped transformer
winding.
In any case it should be fairly easy to get some diodes with sufficient
forward courrent capacity (and enough PIV -- rememebr this is _twice_ the
peak voltag from the transformer!) to do the job and just wire them up
appropritately. There should be enough spave in a PDP8/M PSU to fit them
in. It may not look original, but it'll get the machine going and you can
always fit the original part if you find one.
-tony