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Dc booster to step down

Discussion in 'General Electronics Discussion' started by turbogt16v, May 26, 2017.

  1. turbogt16v

    turbogt16v

    173
    4
    Mar 27, 2015
    Is posible to make chines dc booster
    To dc step down current.
    From the pictures its just a litle swich of the wariable resistor and the other black thing, dont know what is it.,

    buck conv.png
     
    Last edited by a moderator: May 26, 2017
  2. Audioguru

    Audioguru

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    580
    Sep 24, 2016
    You show a buck voltage converter that steps down the voltage and uses an IC to make Pulse-Width-Modulation and an inductor.
    If you make a boost voltage converter then it will step down the current.
     
  3. BobK

    BobK

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    1,648
    Jan 5, 2010
    It is a a step down converter, not a booster. It steps down voltage, not current.

    Bob
     
  4. davenn

    davenn Moderator

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    Sep 5, 2009

    it's time for you to tell us all what you are actually trying to achieve
     
  5. turbogt16v

    turbogt16v

    173
    4
    Mar 27, 2015
    Voltage from solar panel is about 13v at about 0.2a,i need to step down that voltage to 1 to 4v,to be ablle to conect it mobile charger module, that works on that voltage

    I have in possession a dc voltage booster, wich has no use in this setup.so i have ordered a step down module that wi come in 3 weeks. So tho save time i thought it is possible to convert booster to step down modulr.
    Is it even possible?
    Thank you
     
  6. davenn

    davenn Moderator

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    Sep 5, 2009
    show us a label or other info on that charger to confirm the voltage

    OK there seems to be a lot of confusion to what you really wanted .... your first post, you said you wanted a voltage booster but you showed a buck converter (step down)
    and that is why everyone has been telling you that the pic you showed in the first post wasn't the correct unit

    so you are now saying that you really do want a step down converter ??
    if so, then that is what you have
     
  7. Audioguru

    Audioguru

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    Sep 24, 2016
    He also said he wanted "To dc step down current", not to step down the voltage.

    I have never seen a "mobile charger" that works from a voltage as low as "1 to 4v", they all use 5V.
     
  8. turbogt16v

    turbogt16v

    173
    4
    Mar 27, 2015
    I showed 2 pictures, of booster and of step down module, but i edited and deleted it by mistake.
    I put 2 pic for you guys to se the difference.
    Here is the pic of charger, but he is irrlevant for my problem
     

    Attached Files:

  9. davenn

    davenn Moderator

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    Sep 5, 2009
    OK we never saw the other pic ... not to worry :)

    you still didn't answer my Q back in post #6

    yes agreed

    so reread my Q and answer that please :)
     
  10. Audioguru

    Audioguru

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    Sep 24, 2016
    It is silly to step down the solar panel voltage that is too high to 1V-4V that is lower than you need then boost it back up to 5V.
     
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