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Thread: Stopping current flowing a particular way?

  1. #1
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    Exclamation Stopping current flowing a particular way?

    What is the electrical component that stops current flowing a particular way? I read that I might risk blowing up the car computers if the current into the inverter goes back the wrong way which it shouldnt. What component will stop it flowing back but will still let it flow the right way? Hope this makes sense.

    Thanks

  2. #2
    It ain't easy being a green moderator meddler's Avatar
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    a diode is what you are talking about. You shouldn't have any problems with a reasonable quality inverter. They should have protection inbuilt to cope with this.
    Never let the truth get in the way of a good story

  3. #3
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    Hey Thanks,

    I thought that was what it was. Im having trouble trying to find one that meets the 140W or so and 12V. Does it matter if the specs for the diode are way over. Like 400V? And does it matter if it is a rectifier or zener? Dont really understand all this.

    Thanks

  4. #4
    Maximum Bitrate shizzle's Avatar
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    Really shouldn't be necessary, unless you are using some industrial inverter or something.
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  5. #5
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    Just using an old UPS that i found, will connect the battery terminals that originally connected to the battery to the car battery and with 240V output to power the computer. Are you sure that nothing can go wrong if connecting the 12V line into the soon to be converted UPS?

  6. #6
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    What type of diode would I require?

  7. #7
    ddn
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    Which way does current flow? Positive to negative, or negative to positive?

  8. #8
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    Im not sure, i know a little about electronics but not much.
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  9. #9
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    I dont see any problem, just dont want to blow up the cars internal computer. If I hook the 12V line into the UPS which takes 12v battery this should be fine right? I dont see how it can mess the onboard computer up.
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  10. #10
    Low Bitrate Enak's Avatar
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    The UPS is designed to charge the battery... but should be fine if you don't plug it into the mains.

    The worst you will do is burn out the UPS.

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