GB1392049A - Circuit for the drive of a clockwork mechanism regulator-oscillat or of a timepiece - Google Patents
Circuit for the drive of a clockwork mechanism regulator-oscillat or of a timepieceInfo
- Publication number
- GB1392049A GB1392049A GB3320372A GB3320372A GB1392049A GB 1392049 A GB1392049 A GB 1392049A GB 3320372 A GB3320372 A GB 3320372A GB 3320372 A GB3320372 A GB 3320372A GB 1392049 A GB1392049 A GB 1392049A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drive
- capacitor
- voltage
- control
- balance wheel
- 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
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
- G04C3/068—Driving circuits with distinct detecting and driving coils provided with automatic control
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Dc-Dc Converters (AREA)
- Electromechanical Clocks (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Electric Clocks (AREA)
Abstract
1392049 Electronic timepieces; automatic current regulation JUNGHANS GmbH Gebr 14 July 1972 [28 July 1971] 33203/72 Headings G3T and G3X A drive circuit, Fig. 1, for an electro-mechanical oscillatory member (balance wheel) in a timepiece is provided with a constant current circuit 12 preferably as detailed in Fig. 3, or alternatively as Fig. 2 (not shown) and connected between terminals 10, 11 in order that the charging current of a bias capacitor C may be maintained substantially constant independently of the voltage of a battery Uo. Thereby changes in bias voltage due to aging of the battery, are substantially eliminated. The drive circuit includes drive and control transistors T 1 , T2 respectively and drive and control coils L 2 , L 1 respectively, coaxially or concentrically wound and co-operative with a magnet system including magnets 23-26 on a balance wheel comprising a pair of magnetic discs 21, 22, Fig. 4, with counterweights 30. A capacitor CN is provided to suppress feedback oscillations due to close coupling of the coils. When capacitor C is sufficiently charged transistor T 1 is biased ON and a drive pulse is applied to coil L 1 , which moves the balance wheel. Alternate half cycles of A.C. voltage induced in coil L 2 by oscillatory movement of the magnet system relative thereto, control transistor T 2 and the remaining half cycles of, induced voltage control T 1 . Thus T 1 is blocked and C discharges through T 2 when T2 conducts and vice-versa.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2137813A DE2137813C3 (en) | 1971-07-28 | 1971-07-28 | Circuit arrangement for driving a gear folder oscillator of a time-keeping device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1392049A true GB1392049A (en) | 1975-04-23 |
Family
ID=5815109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3320372A Expired GB1392049A (en) | 1971-07-28 | 1972-07-14 | Circuit for the drive of a clockwork mechanism regulator-oscillat or of a timepiece |
Country Status (6)
Country | Link |
---|---|
US (1) | US3775962A (en) |
CH (2) | CH555561A (en) |
DE (1) | DE2137813C3 (en) |
FR (1) | FR2147255B3 (en) |
GB (1) | GB1392049A (en) |
IT (1) | IT963435B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4499416A (en) * | 1981-11-25 | 1985-02-12 | Tokyo Shibaura Denki Kabushiki Kaisha | Reference voltage circuit for obtaining a constant voltage irrespective of the fluctuations of a power supply voltage |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1190046B (en) * | 1962-06-29 | 1965-04-01 | Diehl Fa | Transistor switching amplifier, especially for use in self-controlling clock drives |
CH815067A4 (en) * | 1967-06-08 | 1969-09-30 | ||
GB1181185A (en) * | 1967-08-22 | 1970-02-11 | Kienzle Uhrenfabriken Gmbh | Circuit for Stabilizing the Amplitude in a Directly Driven Mechanical Oscillatory System |
-
1971
- 1971-07-28 DE DE2137813A patent/DE2137813C3/en not_active Expired
-
1972
- 1972-07-05 CH CH1006572A patent/CH555561A/xx unknown
- 1972-07-05 CH CH1006572D patent/CH1006572A4/xx unknown
- 1972-07-14 GB GB3320372A patent/GB1392049A/en not_active Expired
- 1972-07-26 US US00275295A patent/US3775962A/en not_active Expired - Lifetime
- 1972-07-27 IT IT27504/72A patent/IT963435B/en active
- 1972-07-27 FR FR7227081A patent/FR2147255B3/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4499416A (en) * | 1981-11-25 | 1985-02-12 | Tokyo Shibaura Denki Kabushiki Kaisha | Reference voltage circuit for obtaining a constant voltage irrespective of the fluctuations of a power supply voltage |
Also Published As
Publication number | Publication date |
---|---|
DE2137813B2 (en) | 1974-11-21 |
IT963435B (en) | 1974-01-10 |
FR2147255A1 (en) | 1973-03-09 |
CH1006572A4 (en) | 1974-04-11 |
DE2137813A1 (en) | 1973-02-08 |
DE2137813C3 (en) | 1978-04-20 |
CH555561A (en) | 1974-10-31 |
FR2147255B3 (en) | 1975-09-05 |
US3775962A (en) | 1973-12-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |