+ Post New Thread
Results 1 to 15 of 15
  1. #1
    Newbie level 3
    Points: 1,111, Level: 7

    Join Date
    Jan 2007
    Posts
    4
    Helped
    0 / 0
    Points
    1,111
    Level
    7

    step up dc voltage

    My knowledge of electronics doesn't go as far as that, as increasing a given DC voltage. I would much appreciate a general explanation, one that I could use generally for different desired voltages.

    Thanks much.

    Bob Haskell

    •   Alt12th January 2007, 17:20

      advertising

        
       

  2. #2
    Full Member level 3
    Points: 2,954, Level: 12

    Join Date
    Jul 2004
    Posts
    182
    Helped
    7 / 7
    Points
    2,954
    Level
    12

    12v to 40v

    If signal => design a level shifter
    If power => dc to dc converter (boost)



  3. #3
    Advanced Member level 5
    Points: 160,151, Level: 95
    Awards:
    Helpful silver

    Join Date
    Oct 2004
    Location
    West Coast
    Posts
    7,943
    Helped
    2297 / 2297
    Points
    160,151
    Level
    95

    how to up dc voltage

    Use the LM2577-ADJ adjustable step-up converter ..

    Here is its data sheet:
    http://www.rose-hulman.edu/~herniter...ets/LM2577.pdf

    Regards,
    IanP



  4. #4
    Member level 1
    Points: 1,665, Level: 9

    Join Date
    Oct 2005
    Posts
    41
    Helped
    3 / 3
    Points
    1,665
    Level
    9

    how to step up dc voltage

    Dear:
    you an use DC -DC converter, not transformer as the dumpfrog answer you because if u apply DC vltage on transformer the output will be zero volt.
    BR



  5. #5
    Advanced Member level 1
    Points: 3,085, Level: 13

    Join Date
    Sep 2006
    Posts
    440
    Helped
    44 / 44
    Points
    3,085
    Level
    13

    lm2577 projects

    The basic principle is converting the original DC into AC, then step this AC up to the desired value by a transformer, finally rectify it to get the necessary DC voltage.

    One of the most important pros of this principle is we can use the AC with the frequency higher than the mains, upto hundreds thousand hertz, so we can use the smaller transformer, smaller filtering capacitors and inductors, thus get the smaller and lighter DC-DC converters. In the other hand, we can stabilize the output voltage easily.

    Depending the power you need, or how important your project is, so you can design by yourself the simple circuit with 2 transistors and a transformer, or use a 555 timer as astable multivibrator with the power amplifier on transistors, or design a more complicated DC boost converter, or use the dedicated ICs for this purpose such as popular MC34063 from ON semiconductor, or buy the ready-made from any professional manufacturer as Delta, Deer, ... from China.

    You will find out it is not as so complicated as you imagine at the beginning. Free and good document are everywhere on the internet and Google is our best friend.

    Goodluck
    nguyennam



  6. #6
    KST
    KST is offline
    Full Member level 2
    Points: 2,043, Level: 10

    Join Date
    Dec 2005
    Posts
    129
    Helped
    8 / 8
    Points
    2,043
    Level
    10

    step up dc voltage

    Too difficult for U. I think that you should use LT1070HV.
    Good luck for U !



    •   Alt13th January 2007, 18:08

      advertising

        
       

  7. #7

    •   Alt14th January 2007, 06:02

      advertising

        
       

  8. #8
    Newbie level 3
    Points: 1,251, Level: 8

    Join Date
    Aug 2006
    Posts
    3
    Helped
    0 / 0
    Points
    1,251
    Level
    8

    12v to 40v

    i hope tht is too easy to implement with 6v..
    now u can use a no. of diodes in series to get a higher voltage


    i hope it will help u otherwise u can mail me
    jain.mayank@gmail.com

    Added after 3 minutes:

    otherwise one book is thr..tell me ur id...actually forgot the name...i will send u name of tht book ...actually i thought u want a regulator of 40 v
    but tht book has the step ups in dc
    mail me on my gmail id
    i will reply back



  9. #9
    Newbie level 5
    Points: 1,130, Level: 7

    Join Date
    Jan 2007
    Posts
    8
    Helped
    0 / 0
    Points
    1,130
    Level
    7

    simple voltage up converter

    If your looking for a cheap way out and if your input is going to stay the same or go to 0v 2 transistors in a darlington hookup and a few resistors should do.Just do the math.



  10. #10
    Member level 1
    Points: 1,405, Level: 8

    Join Date
    Jan 2007
    Posts
    33
    Helped
    1 / 1
    Points
    1,405
    Level
    8

    12v to 40v converter

    How about using a voltage tripler..google it to get the circuit
    BR
    vabzter



  11. #11
    Newbie level 3
    Points: 1,085, Level: 7

    Join Date
    Jan 2007
    Location
    Taiyuan.China
    Posts
    4
    Helped
    1 / 1
    Points
    1,085
    Level
    7

    dc step up voltage

    i agree with nguyennam ,basic fundamental of converter DC-DC



  12. #12
    Full Member level 6
    Points: 4,120, Level: 15

    Join Date
    Apr 2005
    Posts
    390
    Helped
    52 / 52
    Points
    4,120
    Level
    15

    dc dc step-up principles

    Quote Originally Posted by haskellbob
    My knowledge of electronics doesn't go as far as that, as increasing a given DC voltage. I would much appreciate a general explanation, one that I could use generally for different desired voltages.

    Thanks much.

    Bob Haskell
    Your question is incomplete. Look why: the 40V side could source 7mA or 5A.
    depending of this, the circuit topology will be completely different, also the output noise, etc.



  13. #13
    Newbie level 6
    Points: 2,012, Level: 10

    Join Date
    Jul 2005
    Posts
    10
    Helped
    0 / 0
    Points
    2,012
    Level
    10

    dc voltage step up

    Quote Originally Posted by haskellbob
    My knowledge of electronics doesn't go as far as that, as increasing a given DC voltage. I would much appreciate a general explanation, one that I could use generally for different desired voltages.
    Thanks much.
    Bob Haskell
    See:
    http://www.edaboard.com/viewtopic.ph...916&highlight=



  14. #14
    Member level 2
    Points: 1,784, Level: 9

    Join Date
    Jan 2007
    Posts
    45
    Helped
    3 / 3
    Points
    1,784
    Level
    9

    dc voltage increasing circuit.*pdf

    dear
    here u can use lm1577 voltage step up regulator..
    The LM1577/LM2577 are monolithic integrated circuits that provide all of the power and control functions for step-up (boost), flyback, and forward converter switching regulators. The device is available in three different output voltage versions: 12V, 15V, and adjustable



  15. #15
    Advanced Member level 1
    Points: 4,214, Level: 15

    Join Date
    Jan 2006
    Location
    Singapore
    Posts
    423
    Helped
    45 / 45
    Points
    4,214
    Level
    15

    converter 12v to 40v

    Some references on DC-DC step up regulator.

    http://www.siongboon.com/projects/20...-dc_converter/



+ Post New Thread
Please login

LinkBacks (?)

  1. 20th February 2012, 13:33