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Producing 24 volt DC at 10 Amps from 12 volts DC

Discussion in 'Hobby Electronics' started by JERD, Sep 24, 2008.

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  1. JERD

    JERD Guest

    What is the most efficient way to produce 24 v DC at 10 amps from 12 v DC?

    Virtually unlimited current 12 volt DC supply is available (12 volt/1000Ah
    battery pack).

  2. Phil Allison

    Phil Allison Guest


    ** Go to a solar energy dealer and buy one.

    ** Who needs " most efficient " when there is unlimited current available

    Got any questions that are NOT stupid trolls ?

    ..... Phil
  3. terryc

    terryc Guest

    1) get a second battery.
    2) buy a buck-boost converter made for the real load.
  4. What do you really mean by "efficient"?
    Seems a bit silly to talk about power efficiency when you have an
    "unlimited" current supply available.

    You can buy suitable commercial 12V to 24V converters, that is the
    easiest way.

  5. Maybe he has a limited cooling budget ;-)
    Agree, though I had success in repairing a MOSFET converter
    that was inside a 400W subwoofer amp. Some loser had replaced
    a blown 50A 60V FET with a 2A 650V one, probably wondered why
    it blew again! This thing generates +-22V, which I plan to use
    with a power h-bridge to servo a large PM DC gear-motor that
    will drive an antenna rotator for radio DF. We'll see...

    The sub-woofer had a large "MOSFET" sticker on it, but the
    actual amp used BJTs - the converter has the only MOSFETs.
  6. JERD

    JERD Guest

    This 'supply' is solar generated so it is not really 'unlimited' as some

    If you had the option of purchasing a converter that was 50% efficient or
    one that was 90% efficient which one would you buy?

    It's amazing how some people just jump to conclusions.

    Thanks for the sensible reply's.

  7. Ah, you are the one who first used the term "unlimited".
    Right, so it's power efficiency you were talking about. That wasn't
    entirely clear in your first post.
    BTW, all such devices are going to be switchmodes with efficiency in
    the order of around 85-90%
    Like this one for instance:
    Providing more info up front helps.

    So, have you actually looked at the efficiency specs for commercial
    ones on the market?
    Are they adequate for your needs?

  8. Phil Allison

    Phil Allison Guest

    "J E R K "

    ** Shame yours was not a sensible question.


    ...... Phil
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