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.

Date of Patent:
Mar. 20, 2001

Filed:

Sep. 29, 1999
Applicant:
Inventors:

Daniel J. Bolda, New Berlin, WI (US);

Steven T. Haensgen, Oak Creek, WI (US);

Assignee:

Rockwell Technologies, LLC, Thousand Oaks, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 9/00 ;
U.S. Cl.
CPC ...
G08B 9/00 ;
Abstract

A circuit for and method of controlling transient currents on power conductors includes a voltage-controlled switch connected between one of the power conductors and a load. A turn-on circuit is connected to the switch to control the switch during a transition period in which the switch changes from a non-current conducting state to a conducting state in which a static current flow to the load can be maintained. The turn-on circuit controls turn-on such that the rate of rise and the peak amplitude of the current through the switch is limited during the transition period. A reset circuit also is connected to the voltage-controlled switch to reset the switch to a non-conductive state when the voltage between the power conductors drops out. The reset circuit is configured to reset the switch within a reset period having a duration that is shorter than the duration of the transition period. The circuit and method are particularly suited for use in a network in which the power conductors provide electrical power to a plurality of nodes, and are even more suited for use in a network in which the power conductors and the data conductors, which transmit data between nodes, are disposed within a single media cable.


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