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oscillator doubt!

Discussion in 'General Electronics Discussion' started by akashbindra1431, Dec 16, 2009.

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  1. akashbindra1431

    akashbindra1431

    5
    0
    Dec 16, 2009
    guys does this circuit work!
    1)should i add that 15pF,22pF,33pF to
    calculate the frequency or should i only
    take the value of two Mv2109 which is 15pF.
    2)please tell me does this oscillator have feedback,
    if not please tell me how it should be done!
    3)will there be any shorting @ the varicaps!
    link " http://www.flickr.com/photos/aj_silverthunder/4179530478/sizes/o/ "
    please help
     
  2. Resqueline

    Resqueline

    2,848
    2
    Jul 31, 2009
    1) You first calculate 15, 33, & 22p in series, then you add this result to the varicaps before calculating the frequency.
    2) An oscillator incorporates feedback by definition, it's what makes them work. In this one it's from emitter to base, incorporating some other transistor parameters also.
    3) Whaddayamean? No, not unless you feed a lightning strike into the audio input...
     
  3. akashbindra1431

    akashbindra1431

    5
    0
    Dec 16, 2009
    does this oscillator work
     

    Attached Files:

  4. Resqueline

    Resqueline

    2,848
    2
    Jul 31, 2009
    This looks like a school task, which you obviously should be solving in a different manner than this..
     
  5. nay27uk

    nay27uk

    5
    0
    Dec 19, 2009
    If your after a FM transmitter as this looks like what you are trying to do with it being 93Mhz.

    Do a google search for snakes swallow fm transmitter.
    I built this one myself and it is awesome
     
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