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:
Aug. 10, 2010
Filed:
Jun. 01, 2009
Shiue-shr Jiang, Changhua County, TW;
Kun-min Chen, Changhua County, TW;
Ming-jung Tsai, Chang-Hua, TW;
Ching-sheng LI, Hsinchu County, TW;
Shiue-Shr Jiang, Changhua County, TW;
Kun-Min Chen, Changhua County, TW;
Ming-Jung Tsai, Chang-Hua, TW;
Ching-Sheng Li, Hsinchu County, TW;
Anpec Electronics Corporation, Hsinchu Science Park, Hsin-Chu, TW;
Abstract
A pulse width modulation circuit capable of linearly adjusting duty cycle with voltage, which comprises an input voltage source for generating an input voltage, a regulator for generating a regulated voltage, a first voltage-dividing unit for providing a first divided voltage, a second voltage-dividing unit for providing a second divided voltage, a third voltage-dividing unit for providing a third divided voltage, a voltage adder for adding the first divided voltage and the third divided voltage for generating a high level voltage, a waveform generator for generating an oscillating signal according to the high level voltage and the third divided voltage, and a comparator having a first input terminal coupled to the second voltage-dividing unit, a second terminal coupled to the waveform generator, and an output terminal for comparing the second divided voltage with the oscillating signal to output a pulse width modulation signal through the output terminal.