The operational amplifier used in this circuit is uncommon nowadays. We obtained this circuit from documentation from the 1980s, but it can be adapted to use more modern equivalents.
This two-transistor circuit was found in the January 1994 issue of Electronics Now magazine....
This astable multivibrator has an active cycle of 30,000: 1. We found it in a 1970 EEE. The...
This configuration using a CMOS IC produces a 1 MHz signal. The circuit can be used as clock in...