JPS55142270A - Detector for electronic watch - Google Patents

Detector for electronic watch

Info

Publication number
JPS55142270A
JPS55142270A JP5108079A JP5108079A JPS55142270A JP S55142270 A JPS55142270 A JP S55142270A JP 5108079 A JP5108079 A JP 5108079A JP 5108079 A JP5108079 A JP 5108079A JP S55142270 A JPS55142270 A JP S55142270A
Authority
JP
Japan
Prior art keywords
detection
magnetic field
external magnetic
rotor
step motor
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
JP5108079A
Other languages
English (en)
Japanese (ja)
Other versions
JPS621223B2 (enrdf_load_stackoverflow
Inventor
Jun Ueda
Akira Torisawa
Shuji Otawa
Masaaki Bandai
Masaharu Shida
Katsuhiko Sato
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 Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP5108079A priority Critical patent/JPS55142270A/ja
Publication of JPS55142270A publication Critical patent/JPS55142270A/ja
Publication of JPS621223B2 publication Critical patent/JPS621223B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/143—Means 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)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
JP5108079A 1979-04-24 1979-04-24 Detector for electronic watch Granted JPS55142270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5108079A JPS55142270A (en) 1979-04-24 1979-04-24 Detector for electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5108079A JPS55142270A (en) 1979-04-24 1979-04-24 Detector for electronic watch

Publications (2)

Publication Number Publication Date
JPS55142270A true JPS55142270A (en) 1980-11-06
JPS621223B2 JPS621223B2 (enrdf_load_stackoverflow) 1987-01-12

Family

ID=12876828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5108079A Granted JPS55142270A (en) 1979-04-24 1979-04-24 Detector for electronic watch

Country Status (1)

Country Link
JP (1) JPS55142270A (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5587977A (en) * 1978-12-26 1980-07-03 Seiko Instr & Electronics Ltd Device for detecting electronic watch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5587977A (en) * 1978-12-26 1980-07-03 Seiko Instr & Electronics Ltd Device for detecting electronic watch

Also Published As

Publication number Publication date
JPS621223B2 (enrdf_load_stackoverflow) 1987-01-12

Similar Documents

Publication Publication Date Title
HK5885A (en) Brushless d-c motor
JPS5517478A (en) Revolution detector
JPS57169641A (en) Torque sensor
JPS53132380A (en) Electronic watch
GB2099234B (en) Self-starting two-poole single-phase synchronous motor
JPS55142270A (en) Detector for electronic watch
JPS5771259A (en) Commutatorless motor
JPS547378A (en) Electronic watch
JPS57138856A (en) Rotor for motor
JPS5658770A (en) Rotor for brushless motor
FR2403675A1 (fr) Moteur magnetique a excitation electrique
JPS5372108A (en) Permanent magnet type electric rotary machine
JPS5579670A (en) Dc motor
JPS56120909A (en) Fluid-type self sustaining gyroscopic device
JPS56168163A (en) Speed detector and electric motor using this
JPS57180349A (en) Rotation detector
JPS5341706A (en) Driving section of motor
JPS5333603A (en) Turntable
JPS5454218A (en) Revolving electric machine
JPS563563A (en) Dc motor
JPS53112410A (en) Motor
JPS51140113A (en) Drive circuit of motor without brushes
JPS55119062A (en) Speedometer generator
JPS5227511A (en) Driving circuit
JPS5443510A (en) Detecting rotor position in brushless motor