JPS5523727A - Electronic circuit for driving step motor - Google Patents
Electronic circuit for driving step motorInfo
- Publication number
- JPS5523727A JPS5523727A JP9375578A JP9375578A JPS5523727A JP S5523727 A JPS5523727 A JP S5523727A JP 9375578 A JP9375578 A JP 9375578A JP 9375578 A JP9375578 A JP 9375578A JP S5523727 A JPS5523727 A JP S5523727A
- Authority
- JP
- Japan
- Prior art keywords
- transistors
- driving
- motor
- step motor
- electronic 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.)
- Pending
Links
Landscapes
- Electromechanical Clocks (AREA)
- Control Of Stepping Motors (AREA)
Abstract
PURPOSE:To perform the sufficient electric braking of a step motor for a timepiece with the minimum increase in the consumed power, by adding transistors of smaller current to those for driving the step motor. CONSTITUTION:Input signals C-F shown in Fig. are applied to the input terminals CIN, DIM, EIN, FIN of the bipolar driving transistors 1-4 of a step motor driving circuit. Other transistors 5,6 are added to the driving transistors. The current of the transistors 5,6 under a base-emitter voltage is smaller than that of the driving transistors under the same voltage. For the turn-off period T1 of all the driving transistors 1-4, pulses H, J shown in Fig. are applied to the transistors 5,6 to short-circuit both the terminals of the coil of the motor to each other to electrically brake the motor for the period when no driving signal is applied to the motor. The increase in the consumed power is thus greatly reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9375578A JPS5523727A (en) | 1978-08-01 | 1978-08-01 | Electronic circuit for driving step motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9375578A JPS5523727A (en) | 1978-08-01 | 1978-08-01 | Electronic circuit for driving step motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5523727A true JPS5523727A (en) | 1980-02-20 |
Family
ID=14091239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9375578A Pending JPS5523727A (en) | 1978-08-01 | 1978-08-01 | Electronic circuit for driving step motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5523727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4450517A (en) * | 1981-01-16 | 1984-05-22 | Sundstroem Karl E | Current control circuit with particular application in bipolar constant current control of step motors |
-
1978
- 1978-08-01 JP JP9375578A patent/JPS5523727A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4450517A (en) * | 1981-01-16 | 1984-05-22 | Sundstroem Karl E | Current control circuit with particular application in bipolar constant current control of step motors |
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