AC power on front panels - test-drb@ccmp.vtda.org

17 Jan 2006

Thanks for that remark, Pete!
I did not want to go into "pedantic" mode, but I was indeed
thinking about the capacitors in the EMI filter, but thought
that chances are very slim that they fail.  But they can!
Once in ten years is good, except if it's *your* filter that
fails :-)
The caps in the EMI filter have a very small leakage current,
so if you are 'energy-concious' pulling the plug is truely
the only option.

- Henk, PA8PDP.

...
  -----Original Message-----
 From: cctalk-bounces at classiccmp.org 
 [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Pete Turnbull
 Sent: dinsdag 17 januari 2006 9:06
 To: General Discussion: On-Topic and Off-Topic Posts
 Subject: Re: AC power on front panels

 On Jan 16 2006, 13:59, Patrick Finnegan wrote:
  On Monday 16 January 2006 04:09, Gooijen, Henk
wrote:  
  > I always pull the plugs on my PDP-11s,
because the small   transformer 
   in the
power controller is always connected. 
 You could also just flip off the breaker on the power controller,  which
  disconnects everything* in the PCU from the
mains.

 * Except for the EMI filter, inlet power cable, plug from the wall,  etc. :)

 I've had to repair 861 power controllers twice in the last 
 ten years or so -- once was indeed the EMI filter :-)

 -- 
 Pete						Peter Turnbull
 						Network Manager
 						University of York 
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