24v to 12v

Discussion in 'General Electronics Chat' started by ammiel, May 21, 2009.

  1. ammiel

    Thread Starter New Member

    May 20, 2009
    5
    0
    help i have a jeep and the batt voltage is 24 volt i need a schematic how to drop it become 12v cause may car stereo is 12v only any schematic tnx....
     
  2. mik3

    Senior Member

    Feb 4, 2008
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    How much current does the stereo needs?
     
  3. ammiel

    Thread Starter New Member

    May 20, 2009
    5
    0
    8amps do u have a schematic? tnx...
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
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    A DC-DC converter would be the best solution due to its high efficiency. However, you can use a 10 Amp linear voltage regulator with a big heat sink.
     
  5. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    Take a look at this chip:
    http://www.national.com/pf/LM/LM25088.html
    This will also regulate at a some variation on the input voltage.

    A linear regulator is like burning half the power needed.

    Greetings,
    Bertus
     
  6. ammiel

    Thread Starter New Member

    May 20, 2009
    5
    0
    if any one has a schematic of 24v to 12v?
     
  7. ammiel

    Thread Starter New Member

    May 20, 2009
    5
    0
    do u have a schematic of 24v to 12v ? im not realy good in electronic so thats why i need a schematic
     
  8. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    It would be better to buy a DC-DC converter then.
     
  9. steinar96

    Active Member

    Apr 18, 2009
    239
    4
    yeah, you dont really build a switching power supply without some knowledge of electronics
     
  10. ammiel

    Thread Starter New Member

    May 20, 2009
    5
    0
    i did say i dont have knowledge in electronic what i said is i'm not good on it its different.... i a'm a technician but not engineer that why i need a schematic so that i can make one
     
  11. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    Even techs go forth and design, ocasionally. I'm a tech of 30 years, currently employed as an operator, and design from scratch all the time.

    The 8 amps is a killer, but not unsurmountable.

    Are you wanting to make a PCB, or are you prepared to do some breadboarding?
     
  12. mindmapper

    Active Member

    Aug 17, 2008
    34
    0
    In the link bertus gave http://www.national.com/pf/LM/LM25088.html
    you have everything. There is a schematic drawing, there is a calculator.
    You only put in the wanted datas in the calculator and then you have the values of the components calculated.
     
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