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. 22, 2003
Filed:
Aug. 14, 2000
William Brandes Shearon, Findlay, OH (US);
Salomon Vulih, Neshanic Station, NJ (US);
Other;
Abstract
An oscillator includes a first sawtooth waveform generator for generating a first sawtooth waveform having a selectively started ramp portion and a second sawtooth waveform generator for generating a second sawtooth waveform having a selectively started ramp portion. A controller is also included for alternatingly controlling the first and second sawtooth waveform generators so that a transition to the ramp portion of one sawtooth waveform is based upon determining the ramp portion of the other sawtooth waveform reaching a trip point. The controller also sets the trip point substantially independent of a supply voltage so that the oscillator has reduced sensitivity to supply voltage changes.