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:
May. 18, 2021
Filed:
Nov. 01, 2019
Applicant:
The Swatch Group Research and Development Ltd, Marin, CH;
Inventors:
Assignee:
The Swatch Group Research and Development Ltd, Marin, CH;
Primary Examiner:
Int. Cl.
CPC ...
H02P 7/291 (2016.01); G04C 3/16 (2006.01);
U.S. Cl.
CPC ...
H02P 7/291 (2016.02); G04C 3/16 (2013.01);
Abstract
A motor drive unit for driving a direct current electric motor including a moving part equipped with permanent magnets. The motor drive unit, which is powered by a voltage supply source, includes a switch circuit, an inductor circuit and a capacitor circuit including a set of capacitors. By selectively opening and closing the switches of the switch circuit, a series of consecutive low energy pulses can be generated such that the power consumption of the motor drive circuit is minimized.