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:
Sep. 17, 2019
Filed:
Oct. 29, 2015
Shanghai Shift Electrics Co., Ltd., Shanghai, CN;
SHANGHAI SHIFT ELECTRICS CO., LTD., Shanghai, CN;
Abstract
An adjustable circuit for a personal electric cleaning care appliance comprises comprising a power supply portion and a driver is disclosed. The driver comprises a transducer, a drive coil and an iron core of the drive coil, and a drive shaft of the transducer is equipped with cleaning elements. The adjustable circuit comprises a microchip processor and an H-bridge drive circuit. By connecting a capacitor bank and the drive coil in series at load ends of the H-bridge drive circuit, at least a part of the capacitors of the capacitor bank is controllably connected in series with the drive coil or disconnected from the drive coil, the capacitance of the connected capacitor can be controlled so that the current flowing through the drive coil is controllably limited to a certain value, thereby, the motion amplitude of the cleaning elements can be controlled, and no additional electromagnetic interference will occur.