Can I connect a 14V/1.78A monitor to a AC/DC Cigarette Car Port?

I have read up on it and am still unsure if a car cigarette lighter with a wall outlet converter could support the monitor as the car ports I believe are typically 12V? Does anyone know if a car would support this?

4 Answers

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  • 1 month ago

    Not really sure what you're asking here....

    a) you want to connect a monitor's AC power supply (120 VAC input) to a DC-AC inverter powered from a car's cigarette lighter. That should usually work (it's what we usually do on test drives), but bring a box of spare car fuses for that cigarette lighter, and possibly a couple of replacement inverters - the cheap ones tend to have a high failure rate.

    b) you want to directly connect a monitor's DC input (14V/1.78A) to a car's cigarette lighter socket. Very bad idea. It might work for some time - the car's voltage, with the engine running, is usually around 13.8...14.4 V. The problem is that a car's power supply is also known as "power supply from hell". The voltage will be unstable - anything between 11 and 15 V is completely acceptable, anything between 6 and 16 V is possible in regular operation - and anything up to a few thousand Volts positive or negative spikes are possible while e.g. starting the engine. Which is why in-car electronics devote at least as much effort to spike handling as they do to voltage regulation, if they want to survive the first time the engine is started.

    c) you want to connect a monitor's DC input (14V/1.78A) to a DC-AC inverter's output (120VAC). Very bad idea. About the same effect on the monitor as connecting that DC input to a household soket (albeit with a slightly lower risk of the house burning down).

    d) You have a car power supply for that monitor that connects to the cigarette lighter socket (12VDC nominal) on one side and the monitor's DC input (14VDC) on the other side and want to use that. But there's no DC-AC converter involved here (at least not on the outside). That would be the best option.

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  • keerok
    Lv 7
    1 month ago

    You can try.

    You already know the car is 12V so if ever, it shouldn't hurt the 14V monitor.

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  • A.J.
    Lv 7
    1 month ago

    cigarette car lighter port is 12V dc two wire

    Monitor direct input is 14v dc. The black box is ac-dc converter.

    there are inverters for 12vdc car to 120v ac and the use the converter. the question is whether you can sort out the +/- and go direct to the monitor.

    The 14v is +/- a little, and so is the 12v.

    Hrd to know if it would work and be safe.

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  • 1 month ago

    When running a cars voltage is more like 14.x volts. A lighter circuit can easily handle 1.78a, the fuse is at least 10a

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