This regulator can use BD'136 as the main transistor and as a reference next to a BC548 zener. The circuit provides a voltage of 9V from 12 to power devices that use batteries.
Suggested by Motorola in 1968 documentation, this circuit has an efficiency of 70%. Power...
Toshiba LDO Regulators Toshiba has a wide variety of low voltage drop (LDO) linear regulators...
Found in a 90s Popular Electronics, this Hartley oscillator uses an output transformer of the type...