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dangling emitter circuit?

Discussion in 'Radio and Wireless' started by HarryA, Nov 6, 2018.

  1. HarryA

    HarryA

    40
    12
    Jan 22, 2017
    Cheers from Penn's woods,

    In this AM transmitter circuit what is the transistor actually doing?
    http://www.circuitsgallery.com/2013/08/555-AM-transmitter-circuit.html

    I think the emitter sucks up the electrons from the antenna leaving a positive field around the antenna
    until electrons ascend up the antenna as ball lightning.

    That's my theory and I an sticking to it! ;)
     
    MasterT likes this.
  2. davenn

    davenn Moderator

    12,998
    1,661
    Sep 5, 2009

    I truly hope you are not serious !
    this thread should be in the comedy section
     
    Arouse1973 likes this.
  3. Audioguru

    Audioguru

    2,345
    516
    Sep 24, 2016
    Beware of analog circuits from a computer engineer in India.
    The circuits Gallery website even has a door intercom with only one amplifier!
    Two paralleled mics and two paralleled speakers. You talk and your voice is heard at the outside door and severe acoustical feedback howling at your speaker. There is also severe acoustical feedback howling at the outside door speaker. Wonderful idea.

    Here is their FM transmitter with the value of the emitter resistor one thousand times too high:
     

    Attached Files:

  4. OBW0549

    OBW0549

    160
    119
    Jul 5, 2016
    Not a damn thing, other than taking up space.

    I'd be a bit leery of the digital circuits, as well.
     
    davenn and (*steve*) like this.
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