[sdiy] transistor selection

[Paul Perry]

Sounds to me as though there might be high frequency 
oscillations!! "Touching a transistor" and having stuff change, is a 
dead giveaway of rf instability.

paul perry Melbouren Australia
  ----- Original Message ----- 
  From: Jim Bob 
  To: synth-diy at dropmix.xs4all.nl 
  Sent: Saturday, February 04, 2006 4:37 AM
  Subject: [sdiy] transistor selection


  The problem w/ the circuit is that it doesn't sample...  I think...  Sometimes I get a super high pitched am radio out of tune sort of sound.  Then, if I touch the transistor I can get it to sample and hold...  each time I touch the transistor it samples again... BUT.. the sample goes from that super high pitched sound to such low frequency that the VCO I have it hooked up to simply pulses..   The input is hooked up to another VCO, so Im not sure if its really sampling the input... I wouldn't think I'd get such strange frequencies.

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