JPS5475518A - Electronic clock - Google Patents

Electronic clock

Info

Publication number
JPS5475518A
JPS5475518A JP14302577A JP14302577A JPS5475518A JP S5475518 A JPS5475518 A JP S5475518A JP 14302577 A JP14302577 A JP 14302577A JP 14302577 A JP14302577 A JP 14302577A JP S5475518 A JPS5475518 A JP S5475518A
Authority
JP
Japan
Prior art keywords
motor
load
circuit
pulse
driving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14302577A
Other languages
Japanese (ja)
Other versions
JPS586400B2 (en
Inventor
Hiroshi Ishii
Minoru Hosokawa
Yoshikazu Kawamura
Sakio Okazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP14302577A priority Critical patent/JPS586400B2/en
Publication of JPS5475518A publication Critical patent/JPS5475518A/en
Publication of JPS586400B2 publication Critical patent/JPS586400B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE:To control electric power, based on condition of load, and reduce power consumption of motor, by providing resistance element on transistor for driving coil of pulse motor, and detecting motor operating condition by voltage wave shape which is generated on the resistance element. CONSTITUTION:Output of time standard vibrator 25 is divided in the frequency by the circuit 26 which contains oscillating circuit and frequency divider circuit, the wave is shaped, pulse motor 28 is driven by driving circuit 27, resistance element is provided in parallel to transistors for driving coil of an electric motor 28, load condition is detected by load detecting circuit 29 from voltage wave shape after impression of driving pulse, and corresponding to this, the motor 28 is controlled with control circuit 30. Therefore, narrow driving pulse is supplied at no load time, and wide pulse is supplied at load time; power consumption for motor as a whole can be reduced by making a greater part of daily power supply which is near no load to be small power.
JP14302577A 1977-11-29 1977-11-29 electronic clock Expired JPS586400B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14302577A JPS586400B2 (en) 1977-11-29 1977-11-29 electronic clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14302577A JPS586400B2 (en) 1977-11-29 1977-11-29 electronic clock

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP14594982A Division JPS607480B2 (en) 1982-08-23 1982-08-23 Pulse motor operation detection circuit
JP19885083A Division JPS59135387A (en) 1983-10-24 1983-10-24 Electronic time piece

Publications (2)

Publication Number Publication Date
JPS5475518A true JPS5475518A (en) 1979-06-16
JPS586400B2 JPS586400B2 (en) 1983-02-04

Family

ID=15329151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14302577A Expired JPS586400B2 (en) 1977-11-29 1977-11-29 electronic clock

Country Status (1)

Country Link
JP (1) JPS586400B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5596265U (en) * 1979-08-24 1980-07-04
JPS56111485A (en) * 1979-09-10 1981-09-03 Berney Sa Jean Claude Watch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5596265U (en) * 1979-08-24 1980-07-04
JPS56111485A (en) * 1979-09-10 1981-09-03 Berney Sa Jean Claude Watch
JPH0118398B2 (en) * 1979-09-10 1989-04-05 Ebauchesfabrik Eta Ag

Also Published As

Publication number Publication date
JPS586400B2 (en) 1983-02-04

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