Inventor

LEOWALD KARL-FRIEDRICH

DE11 patents

Patents

11 patents

US5489838AFeb 6, 1996

Method and apparatus for generating a synchronizing signal for a controlled series compensator

SIEMENS AG24 citations92

US5384528AJan 24, 1995

Method and apparatus for recognizing defects in a triggering system of a controlled series compensator

SIEMENS AG25 citations92

US5291120AMar 1, 1994

Method and apparatus for symmetrically modulating a controlled series compensation system

SIEMENS AG10 citations73

US3938026AFeb 10, 1976

Circuit for the simultaneous ignition of a plurality of thyristors

SIEMENS AG9 citations71

US4084206AApr 11, 1978

Protection circuit for serially connected thyristors

SIEMENS AG18 citations70

US3961204AJun 1, 1976

Firing circuit for an electric valve

SIEMENS AG7 citations70

US5053691AOct 1, 1991

Methods and device for stabilizing an electric supply system through the adaptation of a controller of a static compensating device

SIEMENS AG10 citations67

US4063145ADec 13, 1977

Circuit arrangement for firing controlled, parallel-connected electric valves

SIEMENS AG2 citations61

US3987314AOct 19, 1976

Circuit arrangement for firing a controlled semiconductor valve, particularly a thyristor

SIEMENS AG3 citations59

US3946389AMar 23, 1976

Circuit arrangement for the wireless transmission of control signals to the control paths of controlled semiconductor valves

SIEMENS AG2 citations56

US3944815AMar 16, 1976

Firing apparatus for a plurality of electric valves

SIEMENS AG1 citations48