9VDC 24VDC conversion

Discussion in 'The Projects Forum' started by nocturno, Feb 26, 2013.

  1. nocturno

    Thread Starter New Member

    Dec 30, 2012
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    0
    Dear Sirs,
    i would really like your help on a project of mine.
    I want to convert 9VDC to 24VDC, i am thinking to use an lm7824.
    But i wonder if the current will do the trick because with that 24VDC i want to built a 4...20mA simulator (using XTR105).

    Can anyone post his ideas?

    Thank you in advance.
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,222
    No you can not use the LM7824 to convert 9volt to 24volt. This kind of regulator require a higher input voltage to produce a stable output that is lower than the input. Why do you need 24volt. And what are you trying to do. In order to help we need much more information. Do you have any schematics you may post?
     
  3. nocturno

    Thread Starter New Member

    Dec 30, 2012
    3
    0
    I need 24VDC because all the instruments onboard run with 24VDC.
    So i was thinking of using a 9V battery and converting this voltage to 24VDC.
     
  4. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,222
    No since you use a current loop. You will not have to use the same voltage. Given that your 9 volt is enough to drive the current loop properly
     
  5. nocturno

    Thread Starter New Member

    Dec 30, 2012
    3
    0
    Yes you are right about lm7824. Through my internet search i came across the lm2577 boost converter. There are also available kits on the e-bay.
    So i am thinking of buying one but first i want to make sure that this will work. I read the datasheet but it is pretty vague especially about the lm2577-ADJ which i am interested in.

    Here is the datasheet link:http://www.ti.com/lit/ds/symlink/lm2577.pdf
     
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