[amsat-bb] Re: Mobile Computer / Radio Installations

Nigel Gunn G8IFF/W8IFF nigel at ngunn.net
Thu Apr 30 09:55:33 PDT 2009

Especially as many vehicles have the inverter built in by the manufacturer.

Tim Tapio wrote:
> Ben,
> You will find many military power supplies that do the inverse, convert DC
> to AC back to DC...my 50 KVA UPS units at work convert AC to DC to AC....
> If your engine is already running and already producing DC, I think the lack
> of efficiency is of very little consequence....especially if you're looking
> at the 90 watts or less that is required to run a fairly powerful laptop.
> Many people drive with their lights on during the day, I'd say that is less
> efficient than charging/running your laptop from an AC inverter.
> 73 de Tim, K4SHF

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