FR2278195A1 - Drive circuit for timepiece stepping motor - includes two series transistors, and third transtor with motor in collector circuit - Google Patents
Drive circuit for timepiece stepping motor - includes two series transistors, and third transtor with motor in collector circuitInfo
- Publication number
- FR2278195A1 FR2278195A1 FR7521692A FR7521692A FR2278195A1 FR 2278195 A1 FR2278195 A1 FR 2278195A1 FR 7521692 A FR7521692 A FR 7521692A FR 7521692 A FR7521692 A FR 7521692A FR 2278195 A1 FR2278195 A1 FR 2278195A1
- Authority
- FR
- France
- Prior art keywords
- motor
- series transistors
- transtor
- stepping motor
- circuit
- 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.)
- Granted
Links
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 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
- G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P8/00—Arrangements for controlling dynamo-electric motors rotating step by step
- H02P8/14—Arrangements for controlling speed or speed and torque
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Stepping Motors (AREA)
- Electromechanical Clocks (AREA)
Abstract
The control pulses (1) from a frequency divider, supplied by a quartz oscillator, are applied to the centre tap (2) of a voltage divider which comprises three resistors (4, 5, 6) are each connected in series with a common resistor (3). The latter three resistors (4, 5, 6) are respectively connected to the bases of the two series transistors (T1, T2) and to the third transistor (T3). The series transistors (T1, T2) have their collectors connected together, and via a capacitor (T) to the emitter of the third transistor (T3) which is connected via a diode (8) to the other side of the voltage divider. Pref. a blocking diode (10) is connected in parallel with the stepping motor (9).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH962974A CH580297B5 (en) | 1974-07-12 | 1974-07-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2278195A1 true FR2278195A1 (en) | 1976-02-06 |
| FR2278195B1 FR2278195B1 (en) | 1979-05-11 |
Family
ID=4353985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7521692A Granted FR2278195A1 (en) | 1974-07-12 | 1975-07-10 | Drive circuit for timepiece stepping motor - includes two series transistors, and third transtor with motor in collector circuit |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS6018023B2 (en) |
| CH (2) | CH580297B5 (en) |
| DE (1) | DE2440083B2 (en) |
| FR (1) | FR2278195A1 (en) |
-
1974
- 1974-07-12 CH CH962974A patent/CH580297B5/xx not_active IP Right Cessation
- 1974-07-12 CH CH962974D patent/CH962974A4/xx unknown
- 1974-08-19 DE DE19742440083 patent/DE2440083B2/en active Granted
-
1975
- 1975-06-25 JP JP7928975A patent/JPS6018023B2/en not_active Expired
- 1975-07-10 FR FR7521692A patent/FR2278195A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2440083A1 (en) | 1976-01-22 |
| FR2278195B1 (en) | 1979-05-11 |
| JPS6018023B2 (en) | 1985-05-08 |
| DE2440083B2 (en) | 1976-06-24 |
| CH580297B5 (en) | 1976-09-30 |
| JPS5177276A (en) | 1976-07-05 |
| CH962974A4 (en) | 1976-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |