Re: PCMCIA Modems

pjp@netcom.com (jack pines)

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Errors-To: brian@grot.starconn.com
Date: Sat, 21 May 94 02:31 PDT
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From: pjp@netcom.com (jack pines)
To: Multiple recipients of list <zoomer-list@grot.starconn.com>
Subject: Re: PCMCIA Modems
Status: RO

Ray Ingraham writes:
> 
> I've heard that Zoomers cannot take a PCMCIA modem that draws more that 50ma.
>  I looked at one (modem) today that had the following ratings:   50 Mw
> standby
>                           300 Mw receive
>                           400 Mw transmit.
> 
> Which rating counts, and what's the relationship of Mw with Ma?
> 
Watts are a measure of power, the rate at which battery energy is converted
into heat.  Volts is the potential difference, probably as supplied by the
batteries.  Amps are the measure of electrical current.  Watts can be
calculated by multiplying Volts times Amps, 4.5V times 50mA is 225mW.  Sounds
like close but no cigar, unless of course the modem is using Microwatts!

Jack