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From: "Dave VanHorn"
Subject: Re: RS-232 Port Powered Devices
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Date: Tue, 10 Sep 2002 04:57:35 GMT
> How much current can you assume any standard PC could deliver at these two
Exactly enough to bring a standard 232 load to the minimum threshold voltage
See the RS-232 specs a ways down the page.
> Are there other lines commonly used for this purpose?
Yes, but you can't count on them being there.
This interface was never intended to power anything, so it's not surprising
that the guaranteed power outlook is a bit gloomy.
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