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Bare wire inductor

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Discussion in 'Electronic Basics' started by eeh, May 23, 2005.

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  1. May 23, 2005 #1
    eeh

    eeh Guest

    Hi,

    I have seen some RF transmitters (315MHz) PCB that there are some
    inductor components which uses bare wires of 2.5 turns and 3mm
    diameter. What are their functions? I have calculated the inductance to
    be 13nH which is quite small.
    Thanks!
     
  2. May 23, 2005 #2
    Bob Monsen

    Bob Monsen Guest

    If you build a tank out of that inductor, and a cap of 20pF, you have a
    resonance frequency around 315MHz.

    f = 1/(2.pi.sqrt(L*C))
     
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