This circuit was found in a Motorola documentation from the 90s. The transistor used is uncommon today. The output power is 1 W.
In the original 1992 application, this passive circuit was intended for use in the car. At that...
This 1995 circuit uses an audio amplifier that is no longer common today. However, other...
This circuit is from an 80's documentation. The integrated circuit is from the time and the...