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Thread: need help on power

  1. #1
    Constant Bitrate
    Join Date
    Jul 2000
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    188

    Post need help on power

    Hi I need to take my car's power (12 volts DC) and get 18 volts DC at 3 amps. This isn't my field. Is there a circuit to do this and what and how would I need to make it. TIA
    Awol

    my $0.02 cents (value is based on the intelligence of the person reading this message)

  2. #2
    Newbie
    Join Date
    Jul 2001
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    4

    Post

    well, you would do it with quite a bit of dificulty....

  3. #3
    Constant Bitrate
    Join Date
    Jul 2000
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    188

    Post

    Skinnyboy, thats very nice to know but doesn't help me at all. I don't care if its hard or simple hell I know it can be done I see car adapters for laptops all the time and every laptop I have seem uses more than 12 volts of power.
    Awol

    my $0.02 cents (value is based on the intelligence of the person reading this message)

  4. #4
    Retired Admin Aaron Cake's Avatar
    Join Date
    Jan 2000
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    London, Ontario, Canada
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    Cool

    A simple inverter circuit connected to a custom transformer will do it just fine. You can wind a 2:1 transformer, and make an oscillator to feed the input. See http://www.aaroncake.net/circuits/invertr.htm for an example of an inverter. The transformer can be rewould for an 18V output, and then rectified. Note that this circuit is very inefficient. A better idea would be a higher frequency oscillator and transformer.
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  5. #5
    Variable Bitrate
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    Jul 2000
    Location
    Ottawa, Canada
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    Post

    http://www.national.com/appinfo/webench/power/SS/SS.cgi?flow=power&step='1A'

    Nationals webbench page..

    In put the values that you need and it should beable to spit out a circuit at you. This should be an ok solution as long as you dont need heaps of current.
    [SIZE=1]'91 Nissan Stanza

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