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:
Jun. 30, 2015
Filed:
Feb. 04, 2014
Applicant:
Seiko Instruments Inc., Chiba-shi, Chiba, JP;
Inventors:
Kotaro Watanabe, Chiba, JP;
Makoto Mitani, Chiba, JP;
Assignee:
SEIKO INSTRUMENTS INC., Chiba-Shi, Chiba, unknown;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/30 (2006.01); H02P 1/52 (2006.01); H02P 3/00 (2006.01); H02P 23/00 (2006.01); G04C 10/00 (2006.01); G04G 19/06 (2006.01); H02M 1/00 (2007.01);
U.S. Cl.
CPC ...
H02P 23/0095 (2013.01); G04C 10/00 (2013.01); H02M 2001/0006 (2013.01); H02M 2001/0035 (2013.01); G04G 19/06 (2013.01);
Abstract
There are provided a constant voltage circuit that outputs a stable constant voltage for an analog electronic clock, and an analog electronic clock featuring low current consumption and prolonged battery life. The constant voltage circuit has a first voltage holding circuit connected between the gate of an output transistor and an output terminal and a second voltage holding circuit connected between the gate of the output transistor and a ground terminal, and carries out control such that the second voltage holding circuit is enabled when the motor is operated.