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Electronic-timepiece

Method of supporting a catalyst on polyolefins

The catalysts of Harris et al, U.S. Pat. No. 4,136,058, can be used to give increased yields and ...

Zeolite activation

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AND SPECIFIC EMBODIMENTS The high silica content zeolite treated by the method of this invention ...

Reaction sintered boride-oxide-silicon nitride for ceramic cutting tools

I claim: 1. A ceramic composition consisting essentially of a dense homogeneous sintered body whose ...

Olefin polymerization catalyst, process and polyolefin product

What we claim is: 1. A supported Ziegler catalyst prepared by carrying out the following steps ...

Novel catalyst composition

The inorganic oxide used in preparing a catalyst composition of the invention may be any ...

Polymerization catalyst, production and use

What is claimed is: 1. A vanadium-containing catalyst component obtained by sequentially treating ...

Polymerization catalyst, production and use

What is claimed is: 1. A vanadium containing catalyst component obtained by treating an inert solid ...

Process for the electrochemical oxidation of organic products

We claim: 1. Process for the electrochemical oxidation of organic products at a lead-silver anode ...

Larger pore molecular sieves of controlled activity

AND PREFERRED EMBODIMENTS The entire contents of applications Ser. No. 179,592, filed Oct. 7, 1987;...

Electronic timepiece

Details

Inventors: Ichikawa, Singo;
Assignee: Citizen Watch Co., Ltd. (Tokyo, JP)
Primary Examiner: Jackmon; Edith S.
Assistant Examiner:
Attorney, Agent or Firm: Sherman & Shalloway

An electronic timepiece which makes use of a lithium battery having a high electric power capacity is disclosed. The timepiece comprises in combination a voltage converter and a voltage detection circuit. The output signal delivered from the voltage detection circuit causes the output voltage from the voltage converter to change in response to the battery voltage so as to reduce electric power consumed by electric circuits.

DETAILED DESCRIPTION An object of the invention, therefore, is to provide an electronic timepiece which can reduce electric power consumed by electric circuits and which has a long operative life.
Another object of the invention is to provide an electronic timepiece which can sufficiently make use of characteristics of a lithium battery and which has a significantly long operative life.
A feature of the invention is the provision of an electronic timepiece comprising a time reference signal supply source for generating a time reference signal, a time keep circuit for preparing a time keep signal on the basis of said time reference signal, a time display device driven by the output delivered from said time keep circuit and displaying times, a battery for supplying energy to said time display device, a voltage converter for converting the voltage supplied from said battery into a low level voltage, and a voltage detection circuit for detecting a level information of said battery voltage, whereby the output signal delivered from said voltage detection circuit causes the output voltage from said voltage converter to change.

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