GB1001176A - Timing device particularly for clocks and watches - Google Patents

Timing device particularly for clocks and watches

Info

Publication number
GB1001176A
GB1001176A GB50866/63A GB5086663A GB1001176A GB 1001176 A GB1001176 A GB 1001176A GB 50866/63 A GB50866/63 A GB 50866/63A GB 5086663 A GB5086663 A GB 5086663A GB 1001176 A GB1001176 A GB 1001176A
Authority
GB
United Kingdom
Prior art keywords
transistor
balance wheel
capacitor
trigger
unijunction transistor
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
GB50866/63A
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.)
Hamilton Watch Co
Original Assignee
Hamilton Watch Co
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 Hamilton Watch Co filed Critical Hamilton Watch Co
Publication of GB1001176A publication Critical patent/GB1001176A/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
    • G04C3/067—Driving circuits with distinct detecting and driving coils
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
    • H03K3/351—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region the devices being unijunction transistors

Landscapes

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

Abstract

1,001,176. Transistor oscillator circuits. HAMILTON WATCH CO. Dec. 24, 1963 [Dec. 26, 1962], No. 50866/63. Heading H3T. [Also in Division G3] The frequency of a unijunction transistor oscillator, particularly for controlling a timepiece (see Division G3) is stabilized by delaying the pulses obtained from one electrode and feeding them back to another electrode. In Fig. 2, capacitor 26 charges from a supply voltage at 14 via resistor 24 until the voltage at the emitter of the unijunction transistor 12 is sufficient to trigger the transistor, discharging the capacitor 26 and giving a pulse in driving coil 60 the field of which interacts with that of a permanent magnet 58 let into the rim of a balance wheel 54 and rotates the wheel against the torque of a hairspring 56. Capacitor 26 now recharges via resistor 24 whilst the balance wheel 54 is being returned by the hairspring 56. After one complete oscillation of the balance wheel 54, the pulse induced in a trigger coil 62 by the magnet 58 is of suitable polarity to cause transistor 42 to conduct, reducing the potential at base 20 so as to trigger the unijunction transistor 12, discharging capacitor 26 through the driving coil 60 and initiating a further cycle. The natural frequency of the oscillator comprising components 12, 24, 26 should be slightly lower than that of the balance wheel 54. Pulses developed across a damping diode 38 are available at output terminal 32. The balance wheel may be replaced by the cascade combination of any mechanical or electrical time delay and an inverter connected between the two base electrodes of the unijunction transistor, as in Fig. 1, not shown.
GB50866/63A 1962-12-26 1963-12-24 Timing device particularly for clocks and watches Expired GB1001176A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US246897A US3218793A (en) 1962-12-26 1962-12-26 Pulse timer

Publications (1)

Publication Number Publication Date
GB1001176A true GB1001176A (en) 1965-08-11

Family

ID=22932704

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50866/63A Expired GB1001176A (en) 1962-12-26 1963-12-24 Timing device particularly for clocks and watches

Country Status (4)

Country Link
US (1) US3218793A (en)
CH (3) CH1568863A4 (en)
DE (1) DE1523918B2 (en)
GB (1) GB1001176A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384788A (en) * 1964-07-13 1968-05-21 Thomas E. Johnston Electric stock fencer
US3447052A (en) * 1965-10-12 1969-05-27 Hamilton Watch Co Oscillating motor drive system
US3349306A (en) * 1966-03-25 1967-10-24 Buck Instr Co Electrically driven timing device devoid of permanent magnet elements
US3469163A (en) * 1966-04-12 1969-09-23 Joseph W Mathews Moving coil direct current reciprocating motor
US3424998A (en) * 1967-04-26 1969-01-28 Motorola Inc Relaxation oscillator with sawtooth output
US3504250A (en) * 1967-09-14 1970-03-31 Riggs & Lombard Inc Three phase electromechanical drive system
DE1921520C3 (en) * 1969-04-26 1981-12-10 Diehl Gmbh & Co, 8500 Nuernberg Time switch with power reserve
DE2753749B2 (en) * 1977-12-02 1980-04-03 Braun Ag, 6000 Frankfurt Oscillating armature motor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035183A (en) * 1956-06-14 1962-05-15 Siemens And Halske Ag Berlin A Monostable, bistable double base diode circuit utilizing hall effect to perform switching function
US3005305A (en) * 1957-01-04 1961-10-24 Kieninger & Obergfell Electric watch
US3026485A (en) * 1959-12-07 1962-03-20 Gen Electric Unijunction relaxation oscillator with transistor, in discharge circuit of charge capacitor, for coupling discharge to output circuit
US3152295A (en) * 1961-05-01 1964-10-06 Bendix Corp Pulsed tank circuit magneto-or electrostrictive device excitation
US3074028A (en) * 1961-06-19 1963-01-15 Robert A Mammano Long-period relaxation oscillator

Also Published As

Publication number Publication date
DE1523918A1 (en) 1969-11-27
CH1568863A4 (en) 1966-06-30
DE1523918B2 (en) 1971-03-11
US3218793A (en) 1965-11-23
CH424648A (en) 1966-06-30
CH434426A (en) 1967-04-30

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