pdp8/a rebuild

[Alexandre Souza - Listas]

> Does anyone know a reason why I can't remove the G8018's and G8019 and
> replace them with newer OEM power supplies?  I know that one G8018 
> supplies
> 5V @ 25a, +15V @ 2a, -15V @ 2a and +20V @ 4a. I believe the 20V is only 
> used
> for core memory. So.a 5v supply @ 50a should be sufficient, and a 2 dual
> output +/- 15v supply @ 2@ each should be a reasonable substitute. I am
> aware of the functions of the G8019 and that I would be defeating the 
> "dead
> fan shutdown" and battery backup feature.

    I think a GOOD (seventeam or thermaltake, e.g.) PC power supply can do 
wonders here:
    - 5V you can use straight
    - +15V you can mod the power supply to have it
    - -15 you just change the 7912 inside the psu for a 7915
    - +20V would be easier to get thru an external notebook power supply

    Of course, you can always use a +5 power supply along with a +/-15V 
power supply and a 19.5 power supply :)

    Good luck!