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. 07, 2001
Filed:
Aug. 18, 2000
Tadashi Oomura, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
First, second and third capacitors (,) having predetermined capacitance values are connected in series in a commercial alternating current line. A rectifier bridge (,) including two diodes (,) having backward characteristics adjusted to a Zener voltage is connected in parallel with the capacitor (,) in the center, and a smoothing capacitor is connected between a first end and a second end of the rectifier bridge (,). As a result, it is possible to divide alternating current (AC) from a power input terminal into a desired voltage while insulating it, and clip it with a predetermined voltage to shape it into a voltage waveform close to a rectangular wave and smooth it. Thereby, a stabilized DC voltage with less ripples can be obtained.