Switch Circuit For Powering It(phone) On And Off

Discussion in 'General Electronics Chat' started by sharath_412, Jan 18, 2008.

  1. sharath_412

    Thread Starter Active Member

    May 7, 2007
    32
    0
    Hi,
    Can anyone explain me about the circuit which is used in powering ON and powering OFF the cellphones.
    Switch should be pressed for some amount of time to either switch it ON/OFF. Is a counter being used or an RC section.

    regards
    sharath
     
  2. lightingman

    Senior Member

    Apr 19, 2007
    374
    22
    Hi, It is done by the microcontroler or a dedicated power superviser device in the phone.... You can however do it with a few IC's and components if you are not using micro....Daniel.
     
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