This 9 W amplifier with transistors from the 60's was found in documentation of the time. The output transistors must be mounted on heat radiators and the power supply is included.
This oscillator has its frequency controlled by crystal and its frequency can be between 100 kHz...
This circuit is from a 1978 operational amplifier manual. The power supply must be symmetrical, and the...
This useful benchtop power supply uses a single LM350 integrated circuit as a regulator. The...