Dickson charge pump

Discussion in 'General Electronics Chat' started by gdavenport75, Dec 31, 2011.

  1. gdavenport75

    Thread Starter New Member

    Dec 31, 2011
    2
    0
    I am trying to build a dickson charge pump circuit and I am running into so many problems. This is my first time doing this and really could use some help.
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    9,616
    1,082
    Welcome to AAC
    I am already lending my hand. Hope it helps
     
  3. jimkeith

    Well-Known Member

    Oct 26, 2011
    541
    100
    What voltage are you shooting for?
     
  4. jimkeith

    Well-Known Member

    Oct 26, 2011
    541
    100
    This, of course, is not the Dickson charge pump, but I have had a lot of fun fooling around with it--I have cascaded up to 10 stages and was able to flash a neon pilot lamp from a 9V battery without having to resort to magnetics. What is unique is the single pulse response. Output pulse rise time is less than 1us.

    All kinds of variations are possible--how about power transistors and computer grade electrolytics? or NPN transistors to generate a negative pulse? or complimentary outputs? or Vcc = 24V?

    The output can also be used to charge a capacitor via a diode rectifier.

    Visualize it as a number of independent links dangling vertically from a horizontal line, but as soon as you grab and raise the first link, all other links become connected in series as in a long pole--the length indicating voltage...

    Or try the one using opto isolators--seems neat, but the performance is not as good.

    [​IMG]
     
    Last edited: Dec 31, 2011
  5. crutschow

    Expert

    Mar 14, 2008
    16,223
    4,338
    Show us your circuit.

    What are the problems?
     
  6. gdavenport75

    Thread Starter New Member

    Dec 31, 2011
    2
    0
    The voltage is 12 or possibly 18 volts.
     
  7. Adjuster

    Well-Known Member

    Dec 26, 2010
    2,147
    301
    Can you really not manage to tell us more than this - what is your circuit, and what are all these problems you are having?

    Nobody can help you if you do not say more about what the trouble is.
     
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