PDP-8/M power supply questions

[Tobias Russell]

I've managed to find out a little more about the two missing components
on my PDP-8/Ms power supply and alas they look most vital!

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?

Many thanks,
Toby


On Tue, 2009-03-31 at 20:33 +0100, Tobias Russell wrote:
> I've just started the rebuild of one of my PDP-8/Ms. This is an early
> machine with the power supply mounted on the left of the chassis.
> 
> One potential problem I am slightly concerned about is that the front
> two power transistors have been desoldered and removed. Does anyone know
> if these are a vital part of the PSU and if so what the part numbers are
> so I can try to source replacements?
> 
> You can see a picture here http://www.pdp8.co.uk/ (enlarged view here
> http://www.pdp8.co.uk/files/2009/03/00016.jpg)
> 
> If anyone else has a PSU of this type, could they take the opportunity
> to take a few pictures for me. Would be really useful to have another
> reference source for the rebuild.
> 
> All the best,
> Toby
> 
> 


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