GB922431A - Improvements in or relating to time-piece mechanisms - Google Patents

Improvements in or relating to time-piece mechanisms

Info

Publication number
GB922431A
GB922431A GB4032360A GB4032360A GB922431A GB 922431 A GB922431 A GB 922431A GB 4032360 A GB4032360 A GB 4032360A GB 4032360 A GB4032360 A GB 4032360A GB 922431 A GB922431 A GB 922431A
Authority
GB
United Kingdom
Prior art keywords
oscillator
relating
time
tunnel diode
resistance
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
GB4032360A
Inventor
James Grierson Litterick
Robert Walter Alister Scarr
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB4032360A priority Critical patent/GB922431A/en
Publication of GB922431A publication Critical patent/GB922431A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
    • H03B7/02—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance
    • H03B7/06—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being semiconductor device
    • H03B7/08—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being semiconductor device being a tunnel diode
    • 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
    • G04C3/069—Driving circuits using a single coil for detection and driving purposes

Landscapes

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

Abstract

922,431. Clocks and watches. STANDARD TELEPHONES & CABLES Ltd. Sept. 29, 1961 [Nov. 23, 1960], No. 40323/60. Drawings to Specification. Class 139. In a timepiece in which the oscillator is electromagnetically maintained, the maintaining circuit includes a semi-conductor device having a region of negative incremental resistance for a given range of applied voltage e.g. a tunnel diode. The oscillator e.g. the balance carries a permanent magnet which co-operates with a stationary electromagnet in series with the tunnel diode which is biased by the resistance of the electromagnet coil or by a separate resistor.
GB4032360A 1960-11-23 1960-11-23 Improvements in or relating to time-piece mechanisms Expired GB922431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4032360A GB922431A (en) 1960-11-23 1960-11-23 Improvements in or relating to time-piece mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4032360A GB922431A (en) 1960-11-23 1960-11-23 Improvements in or relating to time-piece mechanisms

Publications (1)

Publication Number Publication Date
GB922431A true GB922431A (en) 1963-04-03

Family

ID=10414331

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4032360A Expired GB922431A (en) 1960-11-23 1960-11-23 Improvements in or relating to time-piece mechanisms

Country Status (1)

Country Link
GB (1) GB922431A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241018A (en) * 1961-07-26 1966-03-15 Harry E Stockman Tunnel diode electromechanical movement
DE1302049B (en) * 1963-01-22 1969-10-16 Foerderung Forschung Gmbh Electric clocks, in particular pocket or wrist watches

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241018A (en) * 1961-07-26 1966-03-15 Harry E Stockman Tunnel diode electromechanical movement
DE1302049B (en) * 1963-01-22 1969-10-16 Foerderung Forschung Gmbh Electric clocks, in particular pocket or wrist watches

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