US3775962A - Circuit arrangement for the drive of a clockwork mechanism regulator-oscillator of a timepiece - Google Patents

Circuit arrangement for the drive of a clockwork mechanism regulator-oscillator of a timepiece Download PDF

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Publication number
US3775962A
US3775962A US00275295A US3775962DA US3775962A US 3775962 A US3775962 A US 3775962A US 00275295 A US00275295 A US 00275295A US 3775962D A US3775962D A US 3775962DA US 3775962 A US3775962 A US 3775962A
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United States
Prior art keywords
circuit
circuit according
oscillator
amplifier
clockwork mechanism
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Expired - Lifetime
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US00275295A
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English (en)
Inventor
W Ganter
F Assmus
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Gebrueder Junghans GmbH
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Gebrueder Junghans GmbH
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    • 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

Definitions

  • the circuit includes anIelectronic'amplifler, preferably a semiconductorfamplifier, thatis controlled by a voltage produced by the relative I cmcurr' ARRANGEMENTIFOR THE. DRIVE OF A. v
  • FIG. 1 is a schematic circuit diagrarn'of the drive of the clockwork mechanism regulator-oscillator; of a time-keeping electric device to which the present invention is applicable;
  • .Circuit arrangements of the above-mentioned type are known where a-bias voltage is produced by circuit elements, where the bias voltage influences the amplifier input and where the switch elements are supplied by the current source supplying the amplifienThus, for example, a circuit is known in which a capacitor is lo- ,cated in series with a control coil in the input circuit on bias voltage is also influenced and the driving current decreases with the decreasingbattery voltage. The constancy of the timing impulses is thus'unfavorably'influenced.
  • An object of this invention is to provide a novel circuit of the abovementioned type in which the driving current is not changed as a result of a change of the supply voltage. This. object is achieved according to the invention by the connection of the circuit elementfor the production of the bias voltage through a constant current circuit to the supply voltage.
  • Another object is to provide a novel transistorized, constant current network, preferably a field effect transistor circuit.
  • FIG. 1 The figure. 1; and,
  • FIGLZ is a schematic circuit diagram of an exemplary.
  • FIG. 3 is a schematic circuit diagram of a second embodiment of the constant current circuit of the present invention.
  • FIG. 4 is an elevation of a clockwork mechanism regulator-oscillator relative to the coils of the circuit of FIG. 5 is an elevation in section taken through lines V-V of FIG. 4.
  • the driving circuit shown in FIG. 1 contains a main transistor T in the base-emitter circuit of which lies a control element such as a capacitor C ins'eries with the Through theconstant current circuit of the present invention, the current producing the bias voltage is kept constant within a certain voltage range and as a result changes in the bias voltage on the basis of fluctuations of voltage of the source of the supply voltage are eliminated.
  • a time-keeping device e.g., an electric watch
  • a capacitor connected in a known manner in series with the control element such as a control coil is preferably used as the circuit element for producing the bias voltage.
  • a regulator amplifier controlled in dependence on the amplitude of the clockwork mechanism regulator-oscillator is also preferably provided to influence the bias voltage in which event an especially good constancy of the clockwork mechanism ings and in a few embodiments given byway of examillustrated coil L,- influenced bythe, clockwork mechanism regulator-oscillator.
  • the driving coil L is connected in series with a direct current source U for dc. voltage in the base-collector circuit of the transistor T
  • the coils I. and L may be disposed in a known manner coaxially near one anotherand may also be wound concentrically relative to one another.
  • a neutralizing capacitor C may be provided in' the embodiment given by way of example.
  • a charging impedance l2f may be connected at one end 11 to the positive pole of the source U of dc. voltage and at the other end 10 to the base electrode of the transistor T t c
  • the coil arrangement comprising coils L, and L is preferably fixedly disposed while a permanent magnet system provided on the clockwork mechanism regulator-oscillator is moved relative to the coils.
  • the magnet system moved by theclockwork mechanism regulatoroscillator basically can be of any type.
  • a magnet system having two, air gaps is used, which receive the sides of the coils in the rest position of the clockwork mechanism regulator-oscillator and which are permeated by the magnetic fluxes oppositely and perpendicularly to the plane of the coil.
  • a regulating coil which, as in the case of the emshown)'is produced in the r'egulatingcoil L, which reaches the input threshold voltage of the regulating transistor T so that the latter is put into a conductive state at, for example, 200 in the case of watches that can be worn.
  • the capacitor C is partly or wholly discharged andthus the bias voltage of the base electrode of the transistor T, is influenced.
  • control coil L is used to control both the main transistor T and regulating transistor T
  • a polarity of the a.c. voltage produced in the controlcoil may be used for control of the'main transistor T, and the oppositely polarity voltage used for control of the regulator transistor T i.e., control transistor T is blocked,- for example, whenever main transistor T is triggered and vice versa.
  • a constant current circuit 12 may be connected between the d.c. source U of the supply voltage and the capacitor C, by means of which the capacitor C charging current is kept essentially constant independently of the voltage of the source U so that changes of the bias voltage of the transistor T, as a result of the aging of the battery U are eliminated to a certain extent.
  • the circuit of the constant current device 12 connected between points 10 and 11 may be of any kind so long as the charging current is kept mostly constant.
  • a constant current network can be used as shown in FIG. 2.
  • This network may contain two transistors T T a resistor R connecting the base electrodes of the transistors, resistors R, and R, in the emitter electrode circuits and diodes D and D connected in series in the collector electrode circuits.
  • the constant current circuit 10 is preferably formed by the circuit shown in FIG. 3 with a field effect transistor l5 and a resistor R disks'21 and 22 are made of magnetically conductive
  • the circuit of the invention can be used in the case i tions.
  • the reference number 20 designates the shaft of a clockwork mechanism regulator-oscillator in the form of a balance wheel and material. Permanent bar magnets 23-26 are provided.
  • the spiral spring 27 for the balance wheel is attached at 2'8 and the coils L and L may be those schematically shown inthe circuit of FIG. 1.
  • the present invention may beembodied in other specific forms without departing from the spirit or essential characteristics thereof. The presently disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes whichcome within the meaning and range of equivalency of the claims are therefore intended-to be embraced therein.
  • a circuit for the drive of a regulator-oscillator of a time-keeping device'with an electronic amplifiercontrolled by a voltage produced by a relative movement between a magnet system and a control element which delivers current impulses acting through a driving elementin a driving manner on the clockwork mechanism regulator-oscillator the improvement comprising a'constant current device connected to the power supply of the amplifier and including a regulating amplifier controlled in dependence on the amplitude of the clockwork mechanism regulatoroscillator for the purpose of influencing thev bias voltage of the amplifier.
  • the circuit according to claim 4 including a regulating amplifier controlled in dependence on the amplitude of the clockwork mechanism regulator-oscillator for the purpose of influencing the bias voltage.
  • control-element and the driving element are induction coils and wherein one of said coils is in the circuit of the main amplifier and the regulating amplifier.
  • the circuit according to claim 5 including a connecting element responsive to a magnetic field for influencing the amplitude of oscillations.
  • the circuit according to claim 1 including a connecting element responsive to a magnetic field for influencing the amplitude of oscillations.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Dc-Dc Converters (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
US00275295A 1971-07-28 1972-07-26 Circuit arrangement for the drive of a clockwork mechanism regulator-oscillator of a timepiece Expired - Lifetime US3775962A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2137813A DE2137813C3 (de) 1971-07-28 1971-07-28 Schaltungsanordnung für den Antrieb eines Gangordner-Schwingers eines zeithaltenden Gerätes

Publications (1)

Publication Number Publication Date
US3775962A true US3775962A (en) 1973-12-04

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US00275295A Expired - Lifetime US3775962A (en) 1971-07-28 1972-07-26 Circuit arrangement for the drive of a clockwork mechanism regulator-oscillator of a timepiece

Country Status (6)

Country Link
US (1) US3775962A (enrdf_load_stackoverflow)
CH (2) CH1006572A4 (enrdf_load_stackoverflow)
DE (1) DE2137813C3 (enrdf_load_stackoverflow)
FR (1) FR2147255B3 (enrdf_load_stackoverflow)
GB (1) GB1392049A (enrdf_load_stackoverflow)
IT (1) IT963435B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890177A (ja) * 1981-11-25 1983-05-28 Toshiba Corp 基準電圧回路

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3351833A (en) * 1962-06-29 1967-11-07 Diehl Compensated transistorized electric clock circuit
US3528238A (en) * 1967-06-08 1970-09-15 Fontainemelon Horlogerie Feeding device of an electric clockwork
US3561208A (en) * 1967-08-22 1971-02-09 Kienzle Uhrenfabriken Gmbh Amplitude stabilizer for timepiece

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3351833A (en) * 1962-06-29 1967-11-07 Diehl Compensated transistorized electric clock circuit
US3528238A (en) * 1967-06-08 1970-09-15 Fontainemelon Horlogerie Feeding device of an electric clockwork
US3561208A (en) * 1967-08-22 1971-02-09 Kienzle Uhrenfabriken Gmbh Amplitude stabilizer for timepiece

Also Published As

Publication number Publication date
DE2137813C3 (de) 1978-04-20
FR2147255A1 (enrdf_load_stackoverflow) 1973-03-09
DE2137813A1 (de) 1973-02-08
GB1392049A (en) 1975-04-23
IT963435B (it) 1974-01-10
CH1006572A4 (enrdf_load_stackoverflow) 1974-04-11
CH555561A (enrdf_load_stackoverflow) 1974-10-31
FR2147255B3 (enrdf_load_stackoverflow) 1975-09-05
DE2137813B2 (de) 1974-11-21

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