The circuit shown is from Motorola's 1990 Linear Databook. Shaded components are optional. The characteristics of the coils are given next to the diagram.
This circuit can be used as a shield for sensors or analog circuits connected to the digital input...
Found in a 90s Popular Electronics, this transistorized circuit generates pulses from 2 Hz to 50...
This circuit was found in an old documentation, being able to generate signals of frequencies in...