Capacitor application for battery charging

Discussion in 'The Projects Forum' started by shivamkumarrai, Apr 20, 2013.

  1. shivamkumarrai

    Thread Starter New Member

    Apr 20, 2013
    1
    0
    hi, everyone i need your help....
    I am working on a project and i have a fluctuating dc power source varies from 0-30 volt. and I am using a high microfarad capacitor to store this energy. I am thinking about making a circuit which let me charge this capacitor to 12 volt and discharge it to 5 volt. and doing this process again and again. used for battery charging
    please help me to make circuit switch which automatically remains on after 5volt to charge capactor to 12v and gets off. and another switch between battery and cappacitor which remains on after capacitor charged to 12v and dicharges till 5volt and gets off.
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,052
    3,244
    What is a "fluctuating dc power source"? :confused:

    What is the purpose of charging the capacitor to 12V and then discharging it to 5V? There is no advantage to doing that. You will not gain efficiency.
     
  3. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    I think that is a adjustable dc power source.
     
  4. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    I'm not sure what is your purpose, but it seems that you can using Op Amp LM324 or
    comparators LM339 or LM393 and the transistor or MOSFET to solve your problem.
     
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