We found this circuit in a Radio Electronics from July 1968. The circuit generates rectangular pulses with an amplitude given by the supply voltage.
This audio generator that produces both rectangular and sinusoidal signals was found in a...
This simple circuit for a high impedance magnetic phone (500 ohms or more) has been found in a...
Found in an American publication from 1968, this circuit can be made based on a TIP42 that must be...