Using a 4046 PLL this circuit was obtained from the October 1994 issue of Electronics Now magazine. The circuit can be modified to generate signals at other frequencies.
In the figure we have a typical constant current source circuit. Transistor can be equivalent as...
The circuit shown here uses a 4047 to produce three signals whose frequencies are determined by C...
The CA3020 integrated circuit was one of the first commercial types, sold in the 1960s. The...