the ups use a 12v batery..in yor car u have 12v batery...so if u connect the ups to the car batery u have a cheep convertor...i't works...i used it to power up am 120W @ 8Ohm amplifier (home use)..
Yes, it does work, but you'll have to make sure that the power transformer of your 'home amplifier' will not have problems (if continuously on for a loooong time) with the square-wave output of the UPS (most of the UPS units anyway).
Tried this method with fan motors, it hums...... Due to cost savings, most UPS manufacturers omitted the output filtering/wave shaping devices at the output. Contains lots of 3rd order harmonics.....
Actually, it contains 3rd, 5th, 7th, 9th etc harmonics!
Manufacturers never removed the harmonics simply because the UPS is designed to power up computer systems which use switchmode power supplies (which generally don't care if the input is sine or step-sine or square). Trying to use a UPS to power up any inductive load for extended periods of time is probably asking for trouble (or a smoked transformer... 🙂 )
Don't get me wrong though - there are some UPS' that do in fact produce true sine-wave output - but these are significantly more expensive than the 'usual' stuff. I used to have a UPS manufactured by TI - it produced a really clean sine wave, but went dead some months ago.. sad...
Manufacturers never removed the harmonics simply because the UPS is designed to power up computer systems which use switchmode power supplies (which generally don't care if the input is sine or step-sine or square). Trying to use a UPS to power up any inductive load for extended periods of time is probably asking for trouble (or a smoked transformer... 🙂 )
Don't get me wrong though - there are some UPS' that do in fact produce true sine-wave output - but these are significantly more expensive than the 'usual' stuff. I used to have a UPS manufactured by TI - it produced a really clean sine wave, but went dead some months ago.. sad...
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