Found in American documentation from the 90s, this circuit uses TTL technology and is therefore compatible with microcontroller drives. The circuit must be powered by a 5V power source.
This circuit was found in a 1968 General Electric documentation. It has an input impedance of 2 M ohms...
Found in a Motorola manual from the 1980s, this circuit uses components from the era. The circuit...
This circuit serves as an audio output for AM or even FM radios and was found in a Radio...