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. 09, 2019
Filed:
Jan. 25, 2016
Cosemitech (Shanghai) Co., Ltd, Minhang District Shanghai, CN;
Jian You, Minhang District Shanghai, CN;
Xiaoping Yin, Minhang District Shanghai, CN;
COSEMITECH (SHANGHAI) CO., LTD., Minhang District Shanghai, CN;
Abstract
A voltage feed-forward circuit, a multiplier using the voltage feed-forward circuit, and a power factor correction circuit using the multiplier. The voltage feed-forward circuit is used to maintain and output a peak voltage (Vff) of an input voltage (Vin), and includes first switch element (S), a logic control unit (U), a second switch element (S), a first capacitor (C), a third switch element (S) and a second capacitor (C). The first control signal (Φ) and the second control signal (Φ) begin to be provided at the same time, and the first control signal (Φ) stops being provided when a voltage of the second end of the first capacitor (C) is greater than the peak voltage (Vff) of the input voltage (Vin).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile