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31/8/2018 at 9:53pm
Location: North Wales
Outfit: Elddis
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Some Tv's are 12 volt and used a power supply to reduce the voltage, however a 12 volt battery is not 12 volt, it's between 11.5 and 14.8 volt, and one can't be sure a 12 volt TV will not be damaged with the extra voltage. You would need to look carefully at the spec.
Transformers only work with AC, and the battery is DC. So to use a transformer to change a dc voltage it has to be converted into ac first, years ago it was a vibrator, now all electronic.
The whole unit is called an inverter, some use a lot of power just ticking over, but most today are very good. So although it seems daft, to use an inverter and a 230 volt TV is likely a good idea.
But be it 12 or 230 watts are still watts, so a 100 watt TV will need around 8 amps even with no losses, so 110 AH battery is good for around 12 hours, not very long.
I have been looking at units that turn tablets into Tv's. However same connection is used to charge as the adaptor uses so limited to one program a night.
Laptops can use as much as a TV, of the same size, but this is the point, you have a problem finding a small TV.
Again computers are improving using less and less power.
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Topic: TV Question
DaveS1 says "a transformer only REDUCES voltage ie 230 to 12 volts". Doesn't this mean that if I bought a 12 volt TV I couldn't then increase the voltage with a transformer?
