battery charging

Discussion in 'The Projects Forum' started by pllp89, Jul 12, 2009.

  1. pllp89

    Thread Starter New Member

    Jun 3, 2009
    Hi all,

    I really desprately need help on this. It's a school project and i need to explain this circuit by tomorrow. have been researching and everything but i wasnt able to understand it at all.
    could any of you kindly explain it to me ? on how each and every components works, affects. especially for the comparator( it's an op amp) part. With and without feedback,what it actually affects ? and can i actually know how to calculate the gain for op amp ?
    i've got to go study on capsense proximity sensor for now,which is dued tomorrow too. so i really hope you guys would really help me out. PLEASE PLEASE PLEASE. :confused::confused::confused:

    i've attached the schematic and the component list. please take a look.
    i thank each and everyone of you.
  2. bertus


    Apr 5, 2008
  3. pllp89

    Thread Starter New Member

    Jun 3, 2009

    thanks for your reply. but i dont really understand what you're explaining. i tried reading up on the whole chapter under op amp already. but i still dont know how this works. i just need to have a brief explaination of how this whole circuit actually works.

    thank you for your advice.. :)