Found in technical documentation from National Semiconductor, this circuit provides a voltage of 3.3 V with 500 mA at the output. The component is from the period.
This simple circuit for motors that depends on the MOSFET used was found in the January 1998...
This transistorized shield also functions as a logic gate. The power supply can be in the range of 4.5...
Found in a 90s Popular Electronics, this Hartley oscillator uses an output transformer of the type...