This circuit is from the 80's, using an integrated of the time. The circuit serves as a reference, as this type of dialing is no longer used today.
This signal injector uses a single integrated circuit as an oscillator, producing rectangular...
This circuit is from the 80's component manual itself, but can be applied to more modern...
The circuit in the Multisim Blue simulation sources a regulated voltage to loads up to 50 mA. The...