Subject: Re: [linux-audio-dev] OT: Electronic advice for PC.
From: Paul Winkler (pw_lists_AT_slinkp.com)
Date: Tue Apr 30 2002 - 19:18:42 EEST
On Tue, Apr 30, 2002 at 07:39:26AM -0700, Patrick Shirkey wrote:
> Another question that I'm unsure of is whether having a battery that is too powerful for the machine is going to cause problems or is that not possible because the machine will just run for longer? Or is that where an inverter comes in?
no, an inverter is if you want to generate AC from a battery.
You don't need that.
Quick electricity primer: Voltage needs to be correct for
your devices. Too little and they won't work. Too much and they'll fry.
Current is different: the device will draw as much current as it
needs from the power source. It's determined by the formula
V = I*R, where V is voltage, I is current (amps), and R is the resistance
(ohms) of the device. So if V is right, and your power supply can
produce *at least* I, then you're fine.
--"Welcome to Muppet Labs, where the future is made - today!"
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