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:
Apr. 29, 1997
Filed:
Sep. 07, 1995
Masashige Tada, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In a charge pumping circuit capable of setting a wide output voltage range, a current mirror circuit (4) is provided with a transistor (T5) having an emitter which is grounded through a resistance (R1) and a collector (base) which is connected to that of a transistor (T2), and a transistor (T6) having an emitter which is grounded through a resistance (R2), and a collector which is connected to an output terminal (3). The transistor (T2) has a base which receives an inverted down signal/DOWN, and an emitter which is connected to a constant current source (1). A current mirror circuit (5) is provided with a transistor (T7) having an emitter which is connected to a power source (VDD) through a resistance (R3) and a collector (base) which is connected to that of a transistor (T4), and a transistor (T8) having an emitter which is connected to the power source (VDD) through the resistance (R2) and a collector which is connected to the output terminal (3). The transistor (T4) further has a base which receives an up signal (UP), and an emitter which is connected to the constant current source (2).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile