This circuit was obtained from a 1968 documentation and can be adapted to use current equivalent components. The maximum frequency depends on the components used.
Found in a 90s Electronic Design, this circuit can generate sinusoidal signals from 0.1 Hz to 25...
This circuit activates a warning lamp when an incoming call is received. We found it in an 80s...
April 2017 - Mouser Electronics has the bq25890H integrated circuit consisting of a single 5 A...