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From: John Fields
Organization: Austin Instruments,Inc.
X-Mailer: Mozilla 4.01 [en] (Win95; U)
Subject: Re: How to make/solder a circuit fast?
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NNTP-Posting-Date: Mon, 16 Sep 2002 16:02:32 CDT
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Date: Mon, 16 Sep 2002 21:02:32 GMT
The little lost angel wrote:
> On Mon, 16 Sep 2002 00:12:04 GMT, John Fields
> >Since we don't really know _what_ the motor driver looks like, there's
> >no telling what might happen if you throw another 60mA load across the
> >fan, so COUNT ME OUT!
> I didn't think 60mA would matter much to the PCB which is controlling
> two 0.23A to 0.3A fans... kinda like 10% more at most??
It might work fine, it might not. I can't tell without seeing the
driver circuitry. Is it proportional? Is it bang-bang? (Does the fan
run all the time on low (6V) until something in the PSU gets hot and
then it runs on high (12V) until things cool down again?) If you're
going to be putting 50 of these things together and there are other
folks who are going to be using them it would prob'ly be a good idea for
you to _know_ what effect that extra 60mA is going to have on the
Professional circuit designer
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