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Subject: Re: Heaters for keypads
From: Rob Roy
Reply To: mapug@shore.net
Date: Mon Mar 13 05:58:35 1995

>OK, Rob, thanks: assuming .17 "amphr" actually means ampere rather than
>amp-hour, then the power you're talking to heat the LCD in 5 deg F weather
>is .17 amp x 12 volt x 50% duty cycle = 1 watt. So a 144 ohm 1 watt
>resistor ought to do the equivalent job.
>Rob P
>rapr@med.pitt.edu
>
>

Sorry, it means 0.17 amp-hour. I told you I didn't know from nothing about elec.

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rob roy a58173.mcmail2.cis.mcmaster.ca

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