26 Apr
2011
26 Apr
'11
4:18 p.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-
bounces at classiccmp.org] On Behalf Of Dave McGuire
Sent: Tuesday, April 26, 2011 2:03 PM
To: On-Topic and Off-Topic Posts
Subject: Re: new here
On 4/26/11 4:56 PM, Rob Jarratt wrote:
A switcher simply won't run without a load. FYI -- Ian
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).
Hey, that's the same monstrously complex power supply as is used in
the 11/44. It is in fact a switcher. Tony can speak volumes about
this
particular power supply.
Any idea if this PSU needs a dummy load to check
the voltages?
I'm almost positive that it does, yes, at least on the +5V output.