Using the LM3909 this circuit was found in the January 1992 issue of Radio Electronics magazine. Resistor R1 should be chosen according to the table given next to the diagram.
This circuit allows the use of a common cassette to pass the tape recordings to other media with...
This small transmitter appeared in the March 1989 issue of Radio Electronics magazine. The...
This interesting sound effect circuit that produces the sound of bulls or Bull Horn was found in...