Electronic circuits sensitive mobile on?

Discussion in 'General Electronics Chat' started by srmed2000, Jun 23, 2008.

  1. srmed2000

    Thread Starter New Member

    Jun 23, 2008
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    Electronic circuits sensitive mobile on

    I need help me ...in finding electronic circuits reveal a mobile was working.

    Gives warning that there Mobile works
    any mobile was working at a distance of not less than 1 meters


    [​IMG]
    PLEASE HELP ME
    thanx ,
     
  2. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
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    Please try a different translation software, or find a friend who can translate for you. Your question did not translate well enough for us to know what you are asking.
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
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    I believe the original poster wants a schematic for a broad band receiver capable of detecting the presence of a nearby RF signal, and indicating the relative strength.
     
  4. thingmaker3

    Retired Moderator

    May 16, 2005
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    I was unsure if they wanted schematic, vendor, or troubleshooting.
     
  5. srmed2000

    Thread Starter New Member

    Jun 23, 2008
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    I apologize because I do not speak English well

    Now...I want the design of electronic circuit,

    Objective; of the Electronic design circuit is to give a warning when there is a mobile open or on.(Remote sensing)


    What is required to make This circuit:confused:,

    [​IMG]
     
    Last edited: Jun 24, 2008
  6. Frase

    New Member

    May 27, 2008
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  7. thingmaker3

    Retired Moderator

    May 16, 2005
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  8. srmed2000

    Thread Starter New Member

    Jun 23, 2008
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  9. srmed2000

    Thread Starter New Member

    Jun 23, 2008
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    [​IMG]

    I find it difficult to apply this part .... Possible help to explain what is meant by
    ?????????????
    andWhat a voice supposed to hear it
    ??????????????
     
  10. thingmaker3

    Retired Moderator

    May 16, 2005
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    This is the audio output. Either the sound will come from the speaker, if no plug is in the jack, or the sound will come from the headphones or other appliance if there is a plug in the jack.

    From the website: "Headphones, a more powerful amplifier, or a computer's audio input can also be plugged into the phone jack."
     
  11. srmed2000

    Thread Starter New Member

    Jun 23, 2008
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    Thank you for your reply to my question,

    But the problem is that I did not understand how I could get the voice of warning??

    Supposing that the circuit is Detection of Cell Phone . How is the sound link????

    To clarify,please attach pictures
     
  12. Audioguru

    New Member

    Dec 20, 2007
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    The circuit is a simple AM radio. It won't give a warning. It won't play a cell phone sounds.
     
  13. thingmaker3

    Retired Moderator

    May 16, 2005
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    It will omit a noise, however. Just prior to the cell phone ringing, there will be a sort of "burp ditty burp ditty ditty burp burp burp." (Please don't quote me on the exact sound. I neither remember it clearly, nor can I reproduce it accurately with words.) I think this is due to an audio frequency component of the digital signal from the phone.
     
  14. srmed2000

    Thread Starter New Member

    Jun 23, 2008
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    Thank you very .

    I succeeded in designing circuit

    Thank you ALL & Special thanks to Mr. thingmaker3
     
    Last edited: Jun 27, 2008
  15. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
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    thingmaker3,

    Very interesting! I think you just solved something that's been bugging me for quite a while. Your "burp ditty burp ditty ditty burp burp burp." is a sound I hear intermittently on several different FM radios. On the one in my office, I hear it even if the volume control is turned all the way down. My cell phone signal must be getting detected in the audio amp section.

    Thanks!

    Ken
     
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