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. 09, 1986
Filed:
Jan. 30, 1984
Abstract
A device is provided for generating an AC current ramp for checking the tripping current of the circuit-breaker, in which the current is regulated by a power transistor driven by the voltage available at the middle point of a potentiometric divider, this latter comprising a field effect transistor which is itself driven by a voltage depending on the voltage at the terminals of a capacitor charged by an auxiliary battery. It further comprises a constant current generator which is fed with current by the auxiliary battery for charging said capacitor and a comparator amplifier a first input of which is connected to said capacitor, a second input of which is connected to the junction point between a measuring resistor and said power transistor and the output of which is connected to the gate of said field effect transistor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile