1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

Simple FM transmitter

Discussion in 'Electronic Projects' started by ElectroMaster, Jul 19, 2002.

Thread Status:
Not open for further replies.
  1. audioguru

    audioguru Well-Known Member Most Helpful Member

    Joined:
    Mar 16, 2004
    Messages:
    32,521
    Likes:
    943
    Location:
    Canada, of course!
    R1 should be 10k.
    The other resistors determine the biasing of the audio preamp transistor that is taught in high school.
    Sorry, I am not a teacher for basic electronics.
     
  2. HiTech

    HiTech Well-Known Member

    Joined:
    Jun 28, 2006
    Messages:
    2,874
    Likes:
    30
    Location:
    Penna. USA
    I think he has been tasked with building an FM wireless mic. for the Ring Leader to use at their elephant-go-round circus. Normally, he probably follows "behind" the elephants... good English isn't necessary! :rolleyes:
     
  3. guna16

    guna16 New Member

    Joined:
    Nov 8, 2009
    Messages:
    3
    Likes:
    0
    thanks. its working and got a new experience.. thinks again.. :)
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. uche4newton

    uche4newton New Member

    Joined:
    Nov 16, 2009
    Messages:
    1
    Likes:
    0

    plz i need simple radio receiver project and simple intercom project
     
  6. binhandn

    binhandn New Member

    Joined:
    Dec 7, 2009
    Messages:
    1
    Likes:
    0
    i want simulink this circuit by Orcad.who can u help me?thanks
     
  7. audioguru

    audioguru Well-Known Member Most Helpful Member

    Joined:
    Mar 16, 2004
    Messages:
    32,521
    Likes:
    943
    Location:
    Canada, of course!
    There are many simulation programs. Yours is an old one that hardly anybody uses today.
     
  8. tiburce

    tiburce New Member

    Joined:
    Dec 26, 2009
    Messages:
    1
    Likes:
    0
    can somebody show me the mod4 of audioguru
     
  9. audioguru

    audioguru Well-Known Member Most Helpful Member

    Joined:
    Mar 16, 2004
    Messages:
    32,521
    Likes:
    943
    Location:
    Canada, of course!
    Here it is for the 50th time:
     

    Attached Files:

  10. Miles Prower

    Miles Prower Member

    Joined:
    Apr 30, 2005
    Messages:
    128
    Likes:
    9
    Location:
    USA
    Still staying one step ahead of the RF cops?
     
  11. audioguru

    audioguru Well-Known Member Most Helpful Member

    Joined:
    Mar 16, 2004
    Messages:
    32,521
    Likes:
    943
    Location:
    Canada, of course!
    I made the lousy original FM transmittter to prove that its audio preamp transistor is biassed wrong and that its RF oscillator frequency changes all over the place. Then I fixed its problems one-at-a-time.

    The final one (mod4) works very well.
     
  12. Miles Prower

    Miles Prower Member

    Joined:
    Apr 30, 2005
    Messages:
    128
    Likes:
    9
    Location:
    USA
    I was referring to This Post

     
Thread Status:
Not open for further replies.

Share This Page