Patents Assigned to SDS-Electro GmbH
  • Circuit arrangements for the control of a bistable relay
    Patent number: 4271450
    Abstract: Circuit arrangements for the control of a bistable relay having a capacitor connected in series with the relay coil. The series connection of the coil and the capacitor is connected to an excitation voltage for actuating the relay and simultaneous charging of the capacitor. When the excitation voltage is removed, the series connection is short-circuited through a semiconductor switch, whereby the capacitor is discharged and the relay switched back to its initial position. The bistable relay is thus operated as monostable relay.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: June 2, 1981
    Assignees: Matsushita Electric Works, Ltd., SDS-Electro GmbH
    Inventors: Hiromi Nishimura, Hideki Fukuzono
  • Circuit arrangement for the control of a bistable relay
    Patent number: 4257081
    Abstract: Circuit arrangements for the control of a bistable relay having a capacitor connected in series with its excitation winding, in which the series connection of coil and capacitor is connected to excitation voltage for the excitation of the relay and simultaneous charging of the capacitor, and, upon absence of excitation voltage, is short-circuitable through a semiconductor switch having its output circuit parallel-connected with the series connection of coil and capacitor, whereby the relay switches back to its starting position.
    Type: Grant
    Filed: October 19, 1978
    Date of Patent: March 17, 1981
    Assignees: Matsushita Electric Works Ltd., SDS-Electro GmbH
    Inventors: Hans Sauer, Wolf Steinbichler, Heinz Ritter, Sepp Antonitsch