Scheme for rapid adjustment of network impedance

Self-calibrating power factor controller for ac induction...

Self-oscillating switching regulator having real-time...

Self-regulated transformer with gaps

Semiconductor control apparatus

Semiconductor switch

Series capacitor equipment

Series ferroresonant regulated rectifier with added...

Series pass voltage regulator with overcurrent protection

Servo-amplifier for controlling a high-ohmic low-voltage source

Shared switching for multiple loads

Short circuit protection circuit

Short circuit protection of regulated power supplies

Shunt coil controlled transformer

Shunt regulator

Shutdown circuit for a switching power supply

Shutdown control means for an electric power supply

Simple method of switching an ac line

Single mag amp control system for regulating bipolar voltage...

Single stage inverter device, and related controlling...