Problem with DC/AC Power converter
skinj
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Hi guys.
Am planning on taking my an LCD TV, my car, some mates and lots of beer to a sunny park somewhere on Sunday to watch the football without the massed crowd of the pub to deal with.
I have a Skytronic 300watt inverter to hook up to the car battery and have checked that the LCD will not draw more than 300watts. I just tested it as a dry run and it worked, except the TV was making what I can only describe as a very quick repetitive clicking noise that is relativley loud. I have the pos/neg terminals the right way round and have run the earth lead to the car chasis. The set ran on normal mains before perfectley and is again now.
My question is, is this type of noise normal when using this type of converter and/or will I be damaging the TV if I carry on and use it anyway?
Am planning on taking my an LCD TV, my car, some mates and lots of beer to a sunny park somewhere on Sunday to watch the football without the massed crowd of the pub to deal with.
I have a Skytronic 300watt inverter to hook up to the car battery and have checked that the LCD will not draw more than 300watts. I just tested it as a dry run and it worked, except the TV was making what I can only describe as a very quick repetitive clicking noise that is relativley loud. I have the pos/neg terminals the right way round and have run the earth lead to the car chasis. The set ran on normal mains before perfectley and is again now.
My question is, is this type of noise normal when using this type of converter and/or will I be damaging the TV if I carry on and use it anyway?
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Comments
Cars have one side of the battery, usually the positive {+ve} side) connected to the equipment (lights, horn, radio) etc and the other, negative {-ve} side to the chassis - saves having to run lots of wires back & forth , you just connect the -ve lead of the equipment to the chassis to complete the circuit. It's called "negative earth" - Google it.
Aware off negative earth, have been setting up car audio for years using neg' earth however the instructions say to hook up the pos', neg & earth this way or the earth direct to ground (not sure how this would be done) see page 3 http://www.tlc-direct.co.uk/Technical/DataSheets/Inverters/TLINV150x.pdf
have tried it both ways.
I see 'soft start' is recommended for powering TVs
In case you don't have it here's the manual
I see the current drain of this thing is massive and they say you might need to run the engine as well.
" Try running the vehicle engine while running the inverter. (REMEMBER to switch OFF the inverter when starting the engine.) This will boost the battery voltage allowing the inverter to operate more efficiently, allowing use of the inverter for longer periods of time in high load applitcations."
It'll probably be coming from the filter components in the TV, not liking the non-sinewave input.
bingo