Simple sturdy comparator wanted!

Discussion in 'The Projects Forum' started by Skfir, Nov 28, 2012.

  1. Skfir

    Thread Starter Active Member

    Aug 19, 2010
    135
    4
    Hello friends!
    I have built a step-up power supply, so I just wanted to make sort of a feedback, I mean when output voltage reaches 200v, this voltage is fed back via voltage divider to the comparator which compares it to some reference and switches of the generator (control pin on my IXDD604).
    So could you please advice me any sturdy comparator which may output about 15v and works from single rail 10-16v power supply?
    Or perhaps I can modify my 555 to add this feature (now it works in astable mode)?
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Why don't you start by posting a schematic of your existing circuit in .png format?
    That way we can help you much more quickly.

    However, you might consider using an LM311 single comparator; they are inexpensive and widely available.
     
  3. Skfir

    Thread Starter Active Member

    Aug 19, 2010
    135
    4
    yes, sure. Thank you!
     
  4. Skfir

    Thread Starter Active Member

    Aug 19, 2010
    135
    4
    Done! I used just a transistor to the control pin. Works not too bad.
     
  5. wayneh

    Expert

    Sep 9, 2010
    12,100
    3,036
    Пожалуйста
     
  6. Skfir

    Thread Starter Active Member

    Aug 19, 2010
    135
    4
    You really can speak Russian? Sorry for the offtop.
     
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