Sorry,
the 2 driver transistors are general purpose PNP and NPN transistors, I used the ones from Radio Shack,
PNP = 2N2907
NPN = 2N4401
you can use almost any small switching transistor for this.
Now the Q is supposed to be Q3, is the Power Mosfet, here you have have a wide selection.
I use the IRF 640.
It all depends on the power you want and how fast you will be driving the circuit.
C1 .1uf
C2 .1uf this is used to set the Gating frequency, other values needed for different freq range
C3 1uf
C4 .01uf
C5 .1uf
C6 3nf this is used to set the frequency. other values needed for different freq range
C7 1uf
C8 .01uf
Q1 2N4401
Q2 2N2907
Q3 IRF640
R1 1k
R2 100k
R3 1k
R4 1k
R5 1k
R6 2.2k
R7 10k
R8 1k
R9 10k
R10 2.2k
R11 1k
R12 10k
R13 10k
R14 1k
R15 100k
R16 1k
U1 LM555C
U2 LM555C
U3 LM311
U4 LM311
