2n2222 Transistor Radio from white noise generator. problem with grounding.

Discussion in 'The Projects Forum' started by MarFene, Aug 5, 2015.

  1. MarFene

    Thread Starter Member

    Feb 27, 2014
    39
    3
    I was trying to build a white noise generator i found online consisting of two 2n2222 transistors. after finishing the schematic ,which resulted in a non working circuit , i touched the log of a capacitor which immediately gave a strong signal on the output. after messing around a littile i realised that with an antenna i had in hand a tuned radio frequency receiver tuned on around 93.7~~ MHz


    The only problem is that when i modified the circuit as i am showing in red in the schematic attached , the signal was not constant and i had to touch the inductor with one hand the and antenna with the other hand.


    can anyone guide me ?


    the vide below should also help in my explenation.

     
  2. #12

    Expert

    Nov 30, 2010
    16,278
    6,789
    Sit on a chair and get your feet up off the floor to make yourself a better antenna. Wet both fingers slightly for better contact.
     
    ronv likes this.
  3. MarFene

    Thread Starter Member

    Feb 27, 2014
    39
    3
    i would like to eliminate the fact of having to touch the antenna
     
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