The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 1996
Filed:
Sep. 28, 1994
Manfred Glehr, Eggenfelden, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for triggering a plurality of relay exciter coils connected parallel to a common voltage source includes turning each of the coils on and off with relay switching means associated with the coils, and triggering the respective coils to be turned on after reaching a response state thereof with a common clock generator having a given clock ratio, through the relay switching means, for establishing a steady state of a holding current being reduced relative to the response state. The method further includes turning off the coils with a common OFF-switch, keeping the respective relay switching means closed for those coils being intended to continue to be operated in the steady state of the holding current, for establishing a response current rising within a short time within the associated coil, and triggering the coil again with the clock generator having the given clock ratio after a predetermined period of time. A circuit for carrying out the method includes diodes each being connected parallel to a respective one of the coils. Each diode is connected in the blocking direction through a common Zener diode connected in series in the blocking direction to the voltage source. The common OFF-switch is connected parallel to the Zener diode.