Article View: alt.sys.mac.newuser-help
Article #178Re: Help Quicktake 150 external power?
From: Brains
Date: Thu, 12 Oct 2000 20:22
Date: Thu, 12 Oct 2000 20:22
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2722 bytes
David. E. Goble <goble@gtech> wrote: > This might be a dumb question, but do external power supplies that > allow you to select different volts, also drop the amps? No, and there's no real need to be concerned about it. The amperage rating on the power supply indicates its _maximum_ load, not how much it actually puts out. There's nothing to stop you from hooking up a device which pulls 300mA of current to a power supply that can output a maximum of 10 A. The device will suck up its 300 mA and the power supply will hardly bat an eyelid. Its the *voltage* rating you have to be concerned about - get that wrong, and you could damage the device. Also, the power supply's load limit (in amps) must be higher than the device's current draw rating (also in amps) > I can get one for volts from 3 to 8 but it says it is 300mA (I assume > this is 3 amps)... No no no, silly :) Didn't you learn metric in school? The little m stands for milli, which is one thousandth of a unit. 300 mA is 300 milli-Amps, or a bit under a third of an amp. Brains -- WARNING: mail to this address will be auto-bounced if: (a) more than 10% original content appears before first quoted matter, (b) quoted material exceeds 75% of total message content, and/or (c) HTML is used to format text and/or embed non-ASCII items.
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Subject: Re: Help Quicktake 150 external power?
From: removeallthisexcept-quantic@bigfoot.com (Brains)
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