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Thread: DC->DC schematic.

  1. #1
    Maximum Bitrate
    Join Date
    Nov 1999
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    Sydney NSW Australia
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    581

    DC->DC schematic.

    Hello there...

    Has anyone got a schematic for DC -> DC converter. +12volts is specialy needed.

    Thanx alot for the help.

    Fosgate
    Fosgate

    System Comp V3 - In progress.
    Low power MB with C7 CPU, DC-DC PSU, car ECU link, USB TV, GPS, 7" TFT, Wireless, Voice.

  2. #2
    Newbie
    Join Date
    Nov 1999
    Location
    Sweden
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    53
    Have you looked at this one?

    http://www.geocities.com/SiliconValley/Circuit/1044/CPS.html

    Got the link from http://cajun.current.nu/


  3. #3
    Constant Bitrate
    Join Date
    Oct 1999
    Location
    CA, USA
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    118
    That circuitry is not a DC to DC PWM for the 12V section, just some linear regulators and not even low forward drop ones.

    The 5V section is from Maxim's data sheets.

    If you really need -12V an -5V it is much easier to buy a surplus DC to DC converter to do just that. You can find them for about $6.00 and will put out +/- 15V DC from 5V input.

  4. #4
    Maximum Bitrate
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    Nov 1999
    Location
    Sydney NSW Australia
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    markus thank for the help.
    i had a look at that Schematic and although auther talkes about himself as master of electronics but this schematic is very basic and wont even work properly when the car is off as for 12 volt rails he uses liner regulators ( ok low drop out but still its gona drop out).

    and Probedude_2000 can you please tell me how many amps does that thin can give out ?

    Thanks guys.

    Fosgate
    Fosgate

    System Comp V3 - In progress.
    Low power MB with C7 CPU, DC-DC PSU, car ECU link, USB TV, GPS, 7" TFT, Wireless, Voice.

  5. #5
    Constant Bitrate
    Join Date
    Oct 1999
    Location
    CA, USA
    Posts
    118
    Fosgate, what thing?

    If you're talking about the +/- 15V DC to DC converter, 0.375A for each polarity. Not enough to run your PC off of, but plenty to generate the -12V an -5V from in a nice tidy package.


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