Apparatus and method for regulating the power factor in an elect

Apparatus and method for transient free energization and deenerg

Apparatus and method of phase shift compensation of an active te

Apparatus for compensating reactive power in a three-phase netwo

Apparatus for control of DC power by electromagnetic induction

Apparatus for control of electrical current by electromagnetic i

Apparatus for controlling power supply in a computer system by i

Apparatus for generating ungrounded voltages

Apparatus for indicating over-current condition in a transistor

Apparatus for instantly compensating for line voltage irregulari

Apparatus for providing feedback to eliminate a DC component in

Apparatus for providing regulated direct current to magnetizing

Apparatus for rapidly detecting and calculating the root mean sq

Apparatus for sensing the reactive or real components of current

Apparatus for stabilization of electrical power supply mains

Apparatus for the control of electrical heating of a semiconduct

Apparatus to prevent overcurrent or overvoltage

Arrangement for limiting dynamic overvoltages

Arrangement for measuring temperatures

Arrangement for reducing no-load current in an energized transfo