DE3214543C2 - - Google Patents

Info

Publication number
DE3214543C2
DE3214543C2 DE3214543A DE3214543A DE3214543C2 DE 3214543 C2 DE3214543 C2 DE 3214543C2 DE 3214543 A DE3214543 A DE 3214543A DE 3214543 A DE3214543 A DE 3214543A DE 3214543 C2 DE3214543 C2 DE 3214543C2
Authority
DE
Germany
Prior art keywords
test
pulse
coil
rotor
measuring resistor
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.)
Expired
Application number
DE3214543A
Other languages
German (de)
English (en)
Other versions
DE3214543A1 (de
Inventor
Masuo Matsumoto Nagano Jp Kitano
Jiro Ito
Kenji Suwa Nagano Jp Sakamoto
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.)
Shimauchi Seiki Kk Suwa Nagano Jp Seiko Epson
Original Assignee
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
Priority claimed from JP6179081A external-priority patent/JPS57175977A/ja
Priority claimed from JP56185849A external-priority patent/JPS5886480A/ja
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Publication of DE3214543A1 publication Critical patent/DE3214543A1/de
Application granted granted Critical
Publication of DE3214543C2 publication Critical patent/DE3214543C2/de
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/143Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
DE19823214543 1981-04-23 1982-04-20 Elektronische analoguhr Granted DE3214543A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6179081A JPS57175977A (en) 1981-04-23 1981-04-23 Analogue electronic watch
JP56185849A JPS5886480A (ja) 1981-11-19 1981-11-19 アナログ電子時計

Publications (2)

Publication Number Publication Date
DE3214543A1 DE3214543A1 (de) 1982-11-11
DE3214543C2 true DE3214543C2 (enrdf_load_stackoverflow) 1987-12-03

Family

ID=26402870

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823214543 Granted DE3214543A1 (de) 1981-04-23 1982-04-20 Elektronische analoguhr

Country Status (5)

Country Link
CH (1) CH643426B (enrdf_load_stackoverflow)
DE (1) DE3214543A1 (enrdf_load_stackoverflow)
GB (1) GB2101367B (enrdf_load_stackoverflow)
HK (1) HK10387A (enrdf_load_stackoverflow)
SG (1) SG53286G (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818775B4 (de) * 1997-04-25 2015-09-24 Seiko Instruments Inc. Elektronische Uhr

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69413668T2 (de) * 1993-01-18 1999-04-15 Seiko Instruments Inc., Tokio/Tokyo Zeitgeber
JP4343549B2 (ja) * 2003-02-24 2009-10-14 セイコーインスツル株式会社 ステップモータ制御装置及び電子時計
US11233477B2 (en) 2018-06-07 2022-01-25 Ab Mikroelektronik Gesellschaft Mit Beschraenkter Haftung Method and system for controlling an electric motor and detecting a stall condition

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53132382A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132381A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132386A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS5643575A (en) * 1979-09-18 1981-04-22 Seiko Instr & Electronics Ltd Electronic clock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818775B4 (de) * 1997-04-25 2015-09-24 Seiko Instruments Inc. Elektronische Uhr

Also Published As

Publication number Publication date
DE3214543A1 (de) 1982-11-11
GB2101367A (en) 1983-01-12
HK10387A (en) 1987-02-06
SG53286G (en) 1988-02-19
CH643426B (de)
CH643426GA3 (enrdf_load_stackoverflow) 1984-06-15
GB2101367B (en) 1984-09-05

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: SHIMAUCHI SEIKI K.K., SUWA, NAGANO, JP KABUSHIKI K

D2 Grant after examination
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: HOFFMANN, E., DIPL.-ING., PAT.-ANW., 82166 GRAEFELFING

8327 Change in the person/name/address of the patent owner

Owner name: SHIMAUCHI SEIKI K.K., SUWA, NAGANO, JP SEIKO EPSON