| Re: [GMCnet] 19" TV power draw through inverter [message #114412] |
Mon, 07 February 2011 08:04  |
Gary Casey
Messages: 448
Registered: September 2009
Karma:
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Senior Member |
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Rob,
Thanks for posting the excellent data. Gives me hope that I can do the same.
Now for the 110-volt mini-fridge (?? watts) and the microwave (1500 watts).
Gary
After reading about Dan Gregg's TV and power draw, I decided to make some
measurements of my own.
3. The inverter efficiency, at this low load of 24 watts for a 400 watt
inverter, is 24/34 = .70 or it is about 70 % efficient overall. Considering
the standby 3.5 watts is always there if the inverter is on, and subtracting
that from the total draw of 34 watts you have a 24/30.5 = 79% efficiency. Not
bad considering the inverter only cost $25. Also note that the inverter input
voltage dropped .4 volts due to wiring and a very small auto battery supplying
the power.
--
Rob Allen
former owner of '76 x-PB
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