26 Apr
2011
26 Apr
'11
1:56 p.m.
My PDP8s and PDP11s have PSUs that are happy without dummy loads, you
cna run them with no laod and just chekc the voltages. If I had one that
needed a dummy load (or if I wanted to check on-load anyway), I'd probably
make up a usnit ti the 15 pin plug wired to laod resistors/lamps. It's the
sort
of machine that is quite common, so it would be worth
making up a test
box.
Interesting you should mention the PDP11. The PSU I need to test is from a
PDP11/24, it is a H7140. I think it is Switched Mode, but it is pretty heavy
and rated at 1200W which makes me wonder (I have no experience of other
PDP11s, this is my only one, so I don't know how typical this is, but it is
a far cry from the PSUs in my MicroVAXen).
Any idea if this PSU needs a dummy load to check the voltages?
Thanks
Rob