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:
Jan. 01, 1991
Filed:
Sep. 25, 1989
Manfred Mauthe, Munich, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
integrated voltage multiplier circuit for low supply voltage. In order to improve the signal-to-noise ratio in battery-operated switched capacitor filter circuits in hearing aids, the range of modulation can be increased by doubling the supply voltage. A circuit for voltage multiplication in CMOS technology generates a negative voltage for a given voltage. In order to be able to utilize both clock phases, a two-stage embodiment is selected, both of these working onto a smoothing capacitor. The voltage multiplier circuit is driven by a fourth inverter stage and with a level converter having a connected, third inverter stage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile