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GloomMonger

Running A 240V Device Off 12V - Is This Ok?

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Calling all you electrical engineers / clever folks out there. I have a factory installed dvd system in my car. The audio for the wireless headphones is sent from a transmitter in the boot over 863Mhz UHF. The transmitter has an audio in from the dvd player and a 12v power supply. Sadly, the transmitter only powers on for a few seconds and I have bought a replacement off ebay. Due to the age of the transmitter I couldn't find the exact same model but it's the same brand. Whereas the broken one has DC 12v written next to Power In, the replacement only has DC and comes with a household 3 pin cable. What will happen if I plug the cars 12v power supply in?

Edited to change receiver to transmitter

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Absolutely nothing unless you get an inverter

Misread your post. 12V from the car will be fine

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Is it designed as car receiver? If so it will be 12 or 24v - 24 if it is actually designed for lorries.

I think the 3 pin plug may have been added by mistake - unless of course you mean that it is a 12v power supply designed for a house. In which case, it will work in the car.

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Absolutely nothing unless you get an inverter

Misread your post. 12V from the car will be fine

That's great, will try tonight.

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Is it designed as car receiver? If so it will be 12 or 24v - 24 if it is actually designed for lorries.

I think the 3 pin plug may have been added by mistake - unless of course you mean that it is a 12v power supply designed for a house. In which case, it will work in the car.

sorry, meant to say transmitter not receiver. The replacement I bought is designed for the house, but I'm hoping to use it in the car.

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Edit - if you are going to run a device that was designed to run off a household 12v supply, you may want to put a decent sized capacitor across the inputs to smooth out the lumps that are inevitably present in a car's power supply.

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Looky here! If you have bought a 240 volt device, it may not work in a car, unless it has a power supply "brick" and the real voltage input needed is 12 volts or so DC! I don't have enough information to advise!

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