Signal detector

Discussion in 'The Projects Forum' started by ecefirechandru, Feb 21, 2013.

  1. ecefirechandru

    Thread Starter New Member

    Feb 21, 2013
    1
    0
    heloo,

    need help.
    i have designed the circuit for mobile signal detector and otput i m getting is rapidly changing to 2.5, 2.6, 2.9, 3.5, 3.4, 1.4,5.7, 1.9, 0.0, 1.5 3.7 , 5.8, 6.2, 7.5 etc. but need a constant dc voltage value more than 3 volt for giving as input for microcontroller. Can anyone pls suggest me any idea or circuit to convert that varing signal to dc value!!
    THANKS IN ADVANCE!!!!
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    You just hijacked an existing thread:
    Need help - convert pulse width to DC level

    Now you have a thread of your own.

    BTW, what is the nature of the signal you are showing?
    Where does it come from?
    A schematic would help, if you want advice.

    Bertus
     
  3. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    6,357
    718
    What is the signal source?

    What microcontroller are you planning to use?

    What is the output supposed to be?
     
  4. DickCappels

    Moderator

    Aug 21, 2008
    2,653
    632
    He said "mobile" which makes me think he's looking at the signal from a mobile phone. The best solution in the case of simple analog implementations is to either use an averaging (low pass filter) with a long time constant or a peak detector with a long time constant.
     
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