PDP-8/M power supply questions

[Tony Duell]

> 
> Thanks Tony,
> 
> Yes pretty sure its a bridge rectifier as I found H740 schematics plus

OK...

Bridge rectifiers are not exactly critical components. Provided they'll 
pass enough current amd stand sufficient inverse voltage, they'll work. 
It shouldn't be hard to estimate those (for the latter, 3 times the 
transformer voltage (or strictly 2 * sqrt(2) * transformer voltage) will 
do. 

There will be something avaialbel that will work. 

-tony