🚀 go-pugleaf

In <446@fjcp60.GOV> jgm@fjc.GOV (jgm) writes:

>Posted for a co-worker:

>     I  presently  have  several   386   machines   running   the
>Interactive  unix  operationg system.  The machines are connected
>to uninterruptable power supplies which do not have  the  ability
>to  inform  the  machines  when  battery power has been depleted.
>Consequently, on weekends during a  power  failure  the  machines
>crash twenty minutes after utility power has been lost.

>     I have heard of a device which plugs into the utility  power
>outlet  and  a  serial port on the 386.  The device in conjuction
>with sone software aletts the 386 when  utility  power  has  been
>interrupted   and  allows  the  machine  to  perform  an  orderly
>shutdown.  If anyone knows the  manufactruer  of  such  a  device
>could you please let me know.
>		Please respond to:  gpl@ao.gov
>			Thank you,
>                        Glen P. Lichtenwalter



There has been a lot of discussion over the net in several of the 
groups and also some software posted in alt.sources.  The easiest
way to detect power failure is to get one of the small dc power
supplies (must be dc) from Radio Shack.  A good voltage to use would
be 9vDC.  You can then connect this to one of the control lines on
an unused serial port (DCD or DSR) whichever is supported by the 
monitoring program.  When the AC mains drop you will loose this
signal and then the monitoring program such as UPS-mon will take
whatever action you have setup which can include waiting for a pre-
set amount of time and then doing a shutdown.  If you don't have 
access to one of the archive sites let me know and I will mail you
the program (its not very big).  There is also a version that will
use a game port.,


-- 
Randy Jarrett  WA4MEI 
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