Title:
CIRCUIT DEVICE FOR ELECTROMAGNETIC SWITCHING OPERATION
Document Type and Number:
Japanese Patent JPS5994322
Kind Code:
A
Abstract:
The invention relates to a circuit arrangement for actuating exciting coils for electromagnetic switchgear. A transistor is connected in series with the exciting coil, as an electronic switch. Parallel with the series connection are a capacitor and a clock generator, which opens and closes the transistor with a certain frequency. Thereby, upon opening, a defined turn-off delay of the electromagnetic switchgear, and upon switching on, with the use of a timing element which at first deactivates the clock generator, the effect of a d-c saver circuit for electromagnetic switchgear can be achieved.
Inventors:
GERUHARUTO SHIYUREETAA
Application Number:
JP19990083A
Publication Date:
May 31, 1984
Filing Date:
October 25, 1983
Export Citation:
Assignee:
SIEMENS AG
International Classes:
H01H47/32; H01H47/04; (IPC1-7): H01H47/04
Domestic Patent References:
| JPS5323069A | 1978-03-03 | |||
| JPS54158660A | 1979-12-14 | |||
| JPS5645530A | 1981-04-25 | |||
| JPS58142722A | 1983-08-24 |
Attorney, Agent or Firm:
Tomimura Kiyoshi