GB1076484A - Self starting electronic oscillating device for clockworks - Google Patents
Self starting electronic oscillating device for clockworksInfo
- Publication number
- GB1076484A GB1076484A GB2030465A GB2030465A GB1076484A GB 1076484 A GB1076484 A GB 1076484A GB 2030465 A GB2030465 A GB 2030465A GB 2030465 A GB2030465 A GB 2030465A GB 1076484 A GB1076484 A GB 1076484A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- collector
- transistor
- base
- driving
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
Abstract
1,076,484. Clocks and watches. ITALORA S.p.A. May 13, 1965 [Dec.1, 1964; May 8, 1965], No. 20304/65. Heading G3T. A timepiece balance or mechanical vibrator, Figs. 2, 6, 7 and 8 (not shown) for driving a timepiece, is electromagnetically maintained by the transistor circuit which includes a tapped coil 13 co-operating with an oscillating magnet. The coil constitutes exciting and drive windings respectively in the input and output circuits of the transistor 29. The emitter e is connected to the centre tap of the coil, one end of which is connected through battery 30 to the collector c, the other end being connected through a condenser 27 to the base. In operation, induced voltages are generated in the exciting winding due to the remaining coil section constituting the driving winding and the currents through the driving winding, due to the periodic conduction of the transistor, generate a field which reacts with the magnet. The device is self-starting. A resistor shunt R may be connected between the collector and base electrodes. This resistor has a temperature variation factor of resistance having a sign opposite to that of the collector-base resistance, so as to compensate for temperature variations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997938U DE1997938U (en) | 1965-11-26 | 1968-09-17 | HOLDING DEVICE FOR ONIONS OR THE SAME |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1046464 | 1964-05-08 | ||
| IT2593664 | 1964-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1076484A true GB1076484A (en) | 1967-07-19 |
Family
ID=26326335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2030465A Expired GB1076484A (en) | 1964-05-08 | 1965-11-26 | Self starting electronic oscillating device for clockworks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1076484A (en) |
-
1965
- 1965-11-26 GB GB2030465A patent/GB1076484A/en not_active Expired
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