D. c. chopper regulating method and apparatus incorporating...

D.c. switch circuit

D.c.-fed, regulated direct-current supply system

Damping circuit configuration for one or more semiconductor...

Dc voltage control device

Dc voltage regulator circuit

Detection system with a master control to provide power to...

Device and method for identifying a number of inductive...

Device and method for optical package for providing feedback

Device and process for controlling at least one capacitative...

Device comprising a transformer for step-wise varying voltages

Device for compensating the reactive electrical energy in a...

Device for displaying ignition and conduction completion...

Device for protection in the case of d.c. supply-voltage drop

Device for regulating ac current circuit

Device for regulating an electrical parameter during energy...

Device for stabilizing the voltage of a single-or...

Device for the distribution of firing pulses, circuit...

Device with controllable impedance

Differential current mirror with low or eliminated...