This circuit is from Motorola's 1990 Linear Databook. The transistors allow equivalents and the output power depends on the supply voltage. The power supply must be 30 V symmetrical.
This circuit was found in an English magazine Radio & Electronics Constructor of February 1977....
This circuit is from a 1976 documentation. The diodes can be 1N34 or equivalent, and the power...
This circuit is from a Maxim manual and can be used to power shields from batteries. The circuit...