8 Nov
2002
8 Nov
'02
1:17 a.m.
I do not have any experience with VAX 11/750's,
but I have once heard the following about the PSU.
They are not like the PDP-11 PSU blocks. Those can
operate without any load as they are series regulators.
The PSU's of the VAX 11/750 *must* have a certain minimum
load for correct operation because they are switched-mode.
I do not remember if those SMPSU's can be damaged by
running them without a minimum load, but I know SMPSU's
that will die without a load.
So, to be on the safe side: get some bulbs from your car,
connect them to the outputs of the PSU to shine a some
light on the restoration of the VAX 11/750 ;-)
success,
- Henk.