GB1034958A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
GB1034958A
GB1034958A GB3261464A GB3261464A GB1034958A GB 1034958 A GB1034958 A GB 1034958A GB 3261464 A GB3261464 A GB 3261464A GB 3261464 A GB3261464 A GB 3261464A GB 1034958 A GB1034958 A GB 1034958A
Authority
GB
United Kingdom
Prior art keywords
transistor
resistance
condenser
watch
class
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
GB3261464A
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.)
Fabrique des Montres Zenith SA
Original Assignee
Fabrique des Montres Zenith 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
Priority claimed from CH1028363A external-priority patent/CH502636A/en
Application filed by Fabrique des Montres Zenith SA filed Critical Fabrique des Montres Zenith SA
Publication of GB1034958A publication Critical patent/GB1034958A/en
Expired 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
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
    • G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
    • 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
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
    • G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
    • G04C3/067—Driving circuits with distinct detecting and driving coils
    • G04C3/068—Driving circuits with distinct detecting and driving coils provided with automatic control

Abstract

1,034,958. Watches and clocks. FABRIQUES DES MONTRES ZENITH S.A. Aug.11, 1964 [Aug. 21,1963], No. 32614/64. Heading G3T. [Also in Division H3] A watch which includes a balance having a permanent magnet, the oscillation of which induce pulses in a control winding B1, Fig. 1 (not shown), which are amplified in transistors before being applied to a driving coil B2, comprises a first transistor T1 connected with a battery S through a resistance 1 and also to the winding B1 and a condenser 4, the condenser being charged by the battery through the resistance 1 and a further resistance 2 to a voltage such that during starting of the watch the transistor T1 operates as a class A amplifier, and a second transistor T2 which is connected to the driving coil B2, a resistance 2 and the transistor T1, the resistance 2 ensures that under starting conditions the transistor T2 also operates as a class A amplifier. The arrangement also provides that under normal operation of the watch the transistors T1 and T2 operate as class B amplifiers because the charge of the condenser 4 drops to a voltage lower than that of the threshold voltage of the transistor T1. A condenser 5 is connected with the transistor T1 to eliminate high frequency electric oscillations and a resistance 3 limits the current in the collector of the transistor T1. In a further circuit described the resistance 1 is connected with the collector of the transistor T2, and a variable resistance is connected in series with the coil B2.
GB3261464A 1963-08-21 1964-08-11 Electronic watch Expired GB1034958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1028363A CH502636A (en) 1960-05-09 1963-08-21 Electronic watch

Publications (1)

Publication Number Publication Date
GB1034958A true GB1034958A (en) 1966-07-06

Family

ID=4361515

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3261464A Expired GB1034958A (en) 1963-08-21 1964-08-11 Electronic watch

Country Status (2)

Country Link
CH (1) CH1028363A4 (en)
GB (1) GB1034958A (en)

Also Published As

Publication number Publication date
CH1028363A4 (en) 1970-09-30

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