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:
Jan. 12, 2016
Filed:
Jan. 22, 2014
Seiko Instruments Inc., Chiba-shi, Chiba, JP;
Kotaro Watanabe, Chiba, JP;
Makoto Mitani, Chiba, JP;
SEIKO INSTRUMENTS INC., Chiba, JP;
Abstract
There are provided a constant voltage circuit that features low current consumption and stable operation, and an analog electronic clock provided with the constant voltage circuit. The constant voltage circuit includes a differential amplifier circuit which is turned on/off by a predetermined signal and which controls the voltage of a gate of an output transistor on the basis of a reference voltage and a feedback voltage that are received, a switch circuit which is connected to an output terminal of the differential amplifier circuit and which is turned on/off by a predetermined signal, and a voltage holding circuit which is connected between the gate of the output transistor and a power supply terminal and which has a resistor and a capacitor connected in series. An analog electronic clock provided with the foregoing constant voltage circuit that supplies a voltage to at least an oscillation circuit and a frequency division circuit.