GB1515911A - Battery powered electronic timepiece with voltage regulation - Google Patents

Battery powered electronic timepiece with voltage regulation

Info

Publication number
GB1515911A
GB1515911A GB1031075A GB1031075A GB1515911A GB 1515911 A GB1515911 A GB 1515911A GB 1031075 A GB1031075 A GB 1031075A GB 1031075 A GB1031075 A GB 1031075A GB 1515911 A GB1515911 A GB 1515911A
Authority
GB
United Kingdom
Prior art keywords
capacitor
motor
switches
opened
closed
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
GB1031075A
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.)
SSIH Management Services SA
Original Assignee
SSIH Management Services SA
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 SSIH Management Services SA filed Critical SSIH Management Services SA
Priority to GB1031075A priority Critical patent/GB1515911A/en
Publication of GB1515911A publication Critical patent/GB1515911A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromechanical Clocks (AREA)

Abstract

1515911 Electronic timepieces SOC SUISSE POUR L'INDUSTRIE HORLOGERE MANAGEMENT SERVICES SA 23 Feb 1976 [12 March 1975] 10310/75 Heading G3T [Also in Division H2] In an electronic timepiece having a stepping motor driving a time display, it is arranged that the motor drive pulses are not supplied directly from a battery P but from a capacitor C which is charged from the battery in the intervals between motor steps. The timepiece (Fig. 1) comprises an integrated circuit CI including an oscillator followed by a frequency divider and continuously energized by the battery P to provide low frequency pulses to control the motor drive circuit including switches 1-5 (e.g. M.O.S.-F.E.T.s). The cycle of operation is as follows:- (1) switches 1, 2 are closed and 3, 4, 5 opened so that capacitor C is charged in one direction via a resistor R; (2) switch 5 is closed, and the switches 1-4 opened so that capacitor C discharges through the motor winding LM in one direction to advance the motor by one step; (3) switches 3, 4 are closed and 1, 2, 5 opened so that capacitor C is charged in the opposite direction; (4) switch 5 is closed and switches 1-4 opened so that capacitor C will discharge through winding, in the opposite direction to that of stage 2, to advance the motor by another step. The cycle is then repeated. Since the motor winding and capacitor form an oscillatory circuit their component values are selected so that a halfperiod of oscillation is equal to the duration of one step of the motor. A non-polarized capacitor, e.g. tantalum type, is used.
GB1031075A 1976-02-23 1976-02-23 Battery powered electronic timepiece with voltage regulation Expired GB1515911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1031075A GB1515911A (en) 1976-02-23 1976-02-23 Battery powered electronic timepiece with voltage regulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1031075A GB1515911A (en) 1976-02-23 1976-02-23 Battery powered electronic timepiece with voltage regulation

Publications (1)

Publication Number Publication Date
GB1515911A true GB1515911A (en) 1978-06-28

Family

ID=9965520

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1031075A Expired GB1515911A (en) 1976-02-23 1976-02-23 Battery powered electronic timepiece with voltage regulation

Country Status (1)

Country Link
GB (1) GB1515911A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2349992A (en) * 1999-04-07 2000-11-15 Kershaw H A Electric motor control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2349992A (en) * 1999-04-07 2000-11-15 Kershaw H A Electric motor control system

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930223