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:
Nov. 03, 1992
Filed:
Oct. 16, 1991
Lee A Newman, Dayton, OH (US);
NCR Corporation, Dayton, OH (US);
Abstract
A method and circuit for quickly starting a negative switching voltage regulator to reach a certain level of negative voltage. A regulator chip is used in the circuit, with the circuit having an output terminal from which the negative voltage is obtained. The chip has a start pin thereon and also has an internal transistor which switches on and off to provide an increasing negative voltage at the output terminal. In response to a Start signal at the start pin, a start up circuit is used to provide a forcing current at the output terminal via a second source of negative voltage. When the increasing negative voltage at the output terminal reaches the voltage level of the second source, the start up circuit is turned off.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile