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:
Mar. 27, 1990
Filed:
Nov. 14, 1988
James R Anderson, Chicago, IL (US);
Richard Brander, Cicero, IL (US);
Beltone Electronics Corporation, Chicago, IL (US);
Abstract
A voltage regulator for producing first and second reference voltages. The regulator includes first and second transistors, of a first polarity, having coupled emitters, and third and fourth transistors, of a second polarity, having coupled emitters. A first amplifier is driven by the collectors of the second and third transistors, and provides a signal to the bases of the third and fourth transistors. A fifth transistor, of the first polarity, has its collector interconnected to the base of the second transistor, and the emitter of which is interconnected to the emitter of the first and second transistors. A second amplifier is driven by the collectors of the first and fourth transistors, and provides a signal to the bases of the first and fifth transistors. The wiper arm of a variable resistance whose end terminals are connected between the base and collector of the fifth transistor provides an adjustable reference voltage output over the range of the first and second reference voltages.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile