Re: My Battery Monitor

[Rod.Hower@ametek.com]

If you want to put your circuit board in a nasty environment, use thermally conductive potting epoxy.
We use this in the heavy truck market and don't have any contamination problems
http://www.emersoncuming.com/e&c/pdf/2850%20GT.pdf
This will protect the circuit even if you was your batteries down.

If you are looking for the lowest cost relays for your project, I used this company
http://www.songchuan.com/search.cfm

They make relays in China for most of the big names (Omron, NAIS, Potter-Brumfiend)
but usually charge less than half the cost for their relays.

Rod Hower




At 01:59 PM 11/29/00 +0000, you wrote:
>If using relays to connect batteries to a central measuring
>device, please make sure your circuit CANNOT energise more than one >relay at a time, or you'll short out part or all of your pack!
> >Also, think of what might happen if the contacts weld closed....
>...you might have switched off the relay coil, but the contacts
>are still closed, and then you switch on another relay...
>...plasma frenzy!!
>Positively guided contacts would be a good idea, as well as using
>a multipole relays, so an active relay will lock all the others out.
>
>Just a little more fuel for the fire!  ;)
>-- >Richard Bebbington
>

You must fuse each sense wire with either relays or solid state switches.

Ron Schroeder
WD8CDH
E. E. S.
wd8cdh@bnl.gov
rjs@bnl.gov
ron@112motors.com
631 344-4561 Day
631 286-5677 Nite






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Date: Wed, 29 Nov 2000 10:36:21 -0500
To: ev@listproc.sjsu.edu
From: Ron Schroeder <rjs@bnl.gov>
Subject: Re: My Battery Monitor
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