LCD CURRENT DRAIN on INVERTER
Submitted: Friday, Jan 25, 2013 at 22:06
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kevmac....(WA)
I know there are 12 volt TVs out there, but just wondering if anyone has done a
check on size of inverter needed for 54 cm Tv and a small DVD player?
Appreciate any help at all !
Reply By: Ross M - Saturday, Jan 26, 2013 at 00:06
Saturday, Jan 26, 2013 at 00:06
Kevmac
Many 54cm TV go as low as 40W at 240, however some will be around 50W and possibly up to 60W depending on screen brightness and efficiency.
A DVD will be around 13W at 240v
Together the total may be up to 70W and as Allan said there is a loss in the 12v to 240 V AC conversion. This will take the load on the 12V battery to close to 100w at 12v, so at least 8 amps draw of current being used by the inverter to create the 240 supply you need.
Does your battery pack have the ability to supply 8 amps very hour you use it?
One nights viewing may be 1/3 to 1/2 of the charge capacity of a fully charged 100ah battery.
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Reply By: Dennis Ellery - Saturday, Jan 26, 2013 at 00:34
Saturday, Jan 26, 2013 at 00:34
I have a 19 inch 12 volt TV.
It’s a Phoenix and is advertised as a ultra-low current draw because it has LED edge lighting.
The 19 inch (48 cm) is rated at 30 watt and 22 inch (56 cm) draws 40 watt.
If you intend connecting the TV off a Vast satellite decoder don’t buy a 240 volt model run off an inverter as the losses add up to about 20 watt. Buy the decoder with a 12volt inbuilt power board and it will draw 8 watt.
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