[vox-tech] UPS and auto battery

Mitch Patenaude vox-tech@lists.lugod.org
Sun, 7 Mar 2004 17:46:54 -0800


On Sunday, Mar 7, 2004, at 16:37 US/Pacific, Rod Roark wrote:
> Um, never mind.  12 amps at 115 volts is not 12 amps at 12
> volts....

Also keep in mind that the guy who wrote the article is in Australia, 
and so it's 220 volts, not 115 (though the battery is still a nice 12 
volts.).  Also keep in mind that the monitor load is highly reactive, 
so it's not like a nice resistive load... it's not simply watts = volts 
* amps.  (Well.. you can think of it that way, but there's an imaginary 
component.)

   -- Mitch