ES410071A1 - Integrated circuit for electronic timepieces - Google Patents
Integrated circuit for electronic timepiecesInfo
- Publication number
- ES410071A1 ES410071A1 ES410071A ES410071A ES410071A1 ES 410071 A1 ES410071 A1 ES 410071A1 ES 410071 A ES410071 A ES 410071A ES 410071 A ES410071 A ES 410071A ES 410071 A1 ES410071 A1 ES 410071A1
- Authority
- ES
- Spain
- Prior art keywords
- transistor
- fork
- capacitor
- resistor
- transducer
- 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
- 239000003990 capacitor Substances 0.000 abstract 3
- 238000010276 construction Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
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
- G04C3/08—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
- G04C3/10—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
- G04C3/108—Driving circuits
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N97/00—Electric solid-state thin-film or thick-film devices, not otherwise provided for
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Electric Clocks (AREA)
Abstract
An integrated electronic circuit operating in conjunction with an electromagnetic transducer for sustaining a tuning fork in vibration, the fork serving as a frequency standard for a timepiece. The electronic circuit includes a super-gain transistor whose output is connected through an external power source to the drive coil of the transducer associated with the tuning fork to produce current pulses for actuating the fork. The voltage induced in the phase-sensing coil of the transducer is applied to the input of the transistor through a coupling capacitor, a resistor providing base current for the transistor, whereby regeneration occurs to sustain oscillation at a rate determined by the resonance frequency of the fork. The capacitor has a value in the picofarad range, this small value being offset by a large resistor value in excess of 100 megohms, the resultant decrease in base current being compensated for by an increase in current gain effected by the super-gain transistor. The capacitor, the resistor and the transistor are fabricated as a monolithic device, making possible a miniature timepiece construction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00244644A US3727151A (en) | 1972-04-17 | 1972-04-17 | Integrated circuit for electronic timepieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES410071A1 true ES410071A1 (en) | 1976-04-01 |
Family
ID=22923573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES410071A Expired ES410071A1 (en) | 1972-04-17 | 1972-12-27 | Integrated circuit for electronic timepieces |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3727151A (en) |
| JP (1) | JPS4919932A (en) |
| CA (1) | CA964869A (en) |
| CH (1) | CH556052A (en) |
| DE (1) | DE2263813C3 (en) |
| ES (1) | ES410071A1 (en) |
| FR (1) | FR2180640B1 (en) |
| GB (1) | GB1416728A (en) |
| HK (1) | HK56676A (en) |
| IT (1) | IT973247B (en) |
| NL (1) | NL150240B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5156674A (en) * | 1974-11-14 | 1976-05-18 | Citizen Watch Co Ltd | |
| JPS51127657A (en) * | 1975-04-28 | 1976-11-06 | Seiko Instr & Electronics Ltd | Standard signal generator |
| JPS51138064U (en) * | 1975-04-28 | 1976-11-08 | ||
| US4001869A (en) * | 1975-06-09 | 1977-01-04 | Sprague Electric Company | Mos-capacitor for integrated circuits |
| JPH0540224A (en) * | 1990-07-26 | 1993-02-19 | Fuji Photo Film Co Ltd | Scan type microscope |
| FI124103B (en) * | 2010-02-22 | 2014-03-14 | Murata Electronics Oy | Improved micromechanical construction for a resonator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421309A (en) * | 1966-06-13 | 1969-01-14 | Bulova Watch Co Inc | Unitized tuning fork vibrator |
-
1972
- 1972-04-17 US US00244644A patent/US3727151A/en not_active Expired - Lifetime
- 1972-12-08 CA CA158,500A patent/CA964869A/en not_active Expired
- 1972-12-20 NL NL727217397A patent/NL150240B/en unknown
- 1972-12-20 GB GB5893972A patent/GB1416728A/en not_active Expired
- 1972-12-27 CH CH1885672A patent/CH556052A/xx unknown
- 1972-12-27 ES ES410071A patent/ES410071A1/en not_active Expired
- 1972-12-28 DE DE2263813A patent/DE2263813C3/en not_active Expired
- 1972-12-28 FR FR7246672A patent/FR2180640B1/fr not_active Expired
- 1972-12-28 JP JP48004343A patent/JPS4919932A/ja active Pending
- 1972-12-29 IT IT33981/72A patent/IT973247B/en active
-
1976
- 1976-09-16 HK HK566/76*UA patent/HK56676A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2180640A1 (en) | 1973-11-30 |
| DE2263813B2 (en) | 1978-04-13 |
| DE2263813A1 (en) | 1973-10-25 |
| US3727151A (en) | 1973-04-10 |
| DE2263813C3 (en) | 1978-11-23 |
| CH556052A (en) | 1974-11-15 |
| FR2180640B1 (en) | 1977-04-08 |
| GB1416728A (en) | 1975-12-03 |
| JPS4919932A (en) | 1974-02-21 |
| NL7217397A (en) | 1973-10-19 |
| NL150240B (en) | 1976-07-15 |
| CH1885672A4 (en) | 1974-05-15 |
| IT973247B (en) | 1974-06-10 |
| HK56676A (en) | 1976-09-24 |
| CA964869A (en) | 1975-03-25 |
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