3 A switched regulator (CB8859E)

Found in a 90s Popular Electronics, this circuit provides a current of 3 to 5 A depending on the transistor.

Car 9 V adapter (CB8956E)
Found in documentation from the 1990s, this circuit converts 12 V to 9 V from a car's power...
5 W Darlington Amplifier (CB6177E)
We found this circuit in a 1969 General Electric documentation. The circuit uses transistors of the...
CMOS Voltage Doubler (CB15715E)
This voltage doubler is indicated for applications where a voltage equal to twice that applied at the...