R1 may be 10k and R2 100k. The transistor can be the BC548 and instead of the small lamp we can use a series LED with a 1k resistor. D1 is germanium and C1 is 10 nF. C2 can be 47 nF.
Published in Electronics Now from the 90s, this circuit called Surf Man produces a sound effect in the...
With this circuit it is possible to obtain a sinusoidal signal from a triangular signal. The...
This circuit can function as a simple shield converter from BCD to analog outputs. The circuit...