US3528238A - Feeding device of an electric clockwork - Google Patents

Feeding device of an electric clockwork Download PDF

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Publication number
US3528238A
US3528238A US734370A US3528238DA US3528238A US 3528238 A US3528238 A US 3528238A US 734370 A US734370 A US 734370A US 3528238D A US3528238D A US 3528238DA US 3528238 A US3528238 A US 3528238A
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US
United States
Prior art keywords
clockwork
resistance
current
condenser
feeding device
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 - Lifetime
Application number
US734370A
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English (en)
Inventor
Jean-Marcel Stampfli
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 D'HORLOGERIE DE FONTAINEMELON SUCCURSALE DU LANDERON SA
FONTAINEMELON HORLOGERIE
Original Assignee
FONTAINEMELON HORLOGERIE
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 FONTAINEMELON HORLOGERIE filed Critical FONTAINEMELON HORLOGERIE
Application granted granted Critical
Publication of US3528238A publication Critical patent/US3528238A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

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

Definitions

  • a feeding device producing a stabilized feeding current to an electric clockwork and comprising, a pair of resistances, a condenser connected in parallel with one of the resistances to permit the alternate pulses coming from the clockwork to close themselves on a low impedance circuit constituted by the condenser and by a source of direct feeding current while producing the self-starting of the clockwork at the time of switching on the clockwork as the condenser operates substantially as a short circuit with respect to the resistance with which it is connected in parallel.
  • the present invention relates to a feeding device of an electric clockwork for providing a stabilized feeding current.
  • the feeding devices of an electric clockwork must present the following properties so that the clockwork will operate satisfactorily.
  • the purpose of the present invention is to provide a feeding device of an electric clockwork which provides these three properties.
  • This feeding device is characterized by the fact that it comprises a condenser connected in parallel with one of a pair of resistances, this condenser allowing the alternate pulses coming from the clockwork to be detected in the low impedance circuit constituted by the condenser and by a source of direct feeding current, while providing self-starting of the clockwork when it is put under tension owing to the fact that the condenser operates substanially as a short circuit with respect to the resistance with which it is connected in parallel.
  • the drawing is an electrical diagram showing by way of example, one embodiment of the invention.
  • Portion I represents the feeding device and portion II represents the circuit of an electric clockwork, all for facilitating an understanding of the operation of the feeding device.
  • the feeding device comprises a source of feeding current 1, having two terminals designated by A and B, the internal resistance of which is relatively weak with respect to the resistance of the electric clockwork.
  • a and B the internal resistance of which is relatively weak with respect to the resistance of the electric clockwork.
  • the source of current has too high an internal resistance, same can be remedied by the addition of a condenser connected in parallel therewith.
  • the stabilization of the current is produced by a linear resistance R and by a non-linear resistance R constituted by two diodes directly connected.
  • Non-linear resistance R could also be constituted by a resistance VDR, by a Zener diode or by any non-linear means.
  • the suitable choice of the resistances R and R allows maintenance to between points C and B of the circuit of a stable current of a desired value.
  • the tension between the terminals A and B of the source of current can vary to a large extent without the tension between points C and B being submitted to any substantial change, all so that the condition of a well stabilized supply current is met.
  • a switch 1, connected between terminals A and resistance R allows the on and off switching of the feeding device.
  • a condenser C is connected in parallel with resistance R
  • the electric clockwork comprises a driving coil B,,, a pickup coil B of a conventional horological vibratory or oscillator element carry permanent magnet means which interact with coils B and B a transistor T, a capacity C connected in series with pickup coil B and a base 2 of transistor T, and a constant time, constituted by a capacity C and by a resistance R mounted in parallel, connected between base 2 and a collector 3 of transistor T.
  • Condenser C of the feeding device serves three func tions:
  • the signal induced in pickup coil B must be able to pass in a circuit of low impedance, a condition necessary for successful operation of the clock work and a provision of the second of the above-mentioned properties.
  • the several elements of the circuit can have, for instance, the following values:

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)
US734370A 1967-06-08 1968-06-04 Feeding device of an electric clockwork Expired - Lifetime US3528238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH815067A CH485264A (fr) 1967-06-08 1967-06-08 Dispositif d'alimentation d'un mouvement d'horlogerie électrique

Publications (1)

Publication Number Publication Date
US3528238A true US3528238A (en) 1970-09-15

Family

ID=4335917

Family Applications (1)

Application Number Title Priority Date Filing Date
US734370A Expired - Lifetime US3528238A (en) 1967-06-08 1968-06-04 Feeding device of an electric clockwork

Country Status (3)

Country Link
US (1) US3528238A (cs)
CH (2) CH815067A4 (cs)
DE (1) DE1773554A1 (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775962A (en) * 1971-07-28 1973-12-04 Junghans Gmbh Geb Circuit arrangement for the drive of a clockwork mechanism regulator-oscillator of a timepiece
US3908353A (en) * 1973-10-09 1975-09-30 Engler Instr Company Electric timepiece drive
US4009565A (en) * 1974-05-07 1977-03-01 Bisoca Societe De Recherches Time measuring device having a periodic signal generator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293568A (en) * 1963-02-20 1966-12-20 Junghans Geb Ag Amplitude stabilized electromechanical oscillator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293568A (en) * 1963-02-20 1966-12-20 Junghans Geb Ag Amplitude stabilized electromechanical oscillator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775962A (en) * 1971-07-28 1973-12-04 Junghans Gmbh Geb Circuit arrangement for the drive of a clockwork mechanism regulator-oscillator of a timepiece
US3908353A (en) * 1973-10-09 1975-09-30 Engler Instr Company Electric timepiece drive
US4009565A (en) * 1974-05-07 1977-03-01 Bisoca Societe De Recherches Time measuring device having a periodic signal generator

Also Published As

Publication number Publication date
CH485264A (fr) 1969-09-30
CH815067A4 (cs) 1969-09-30
DE1773554A1 (de) 1971-06-09

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