JPS54139015A - Circuit for detecting operation of step motor - Google Patents
Circuit for detecting operation of step motorInfo
- Publication number
- JPS54139015A JPS54139015A JP4619178A JP4619178A JPS54139015A JP S54139015 A JPS54139015 A JP S54139015A JP 4619178 A JP4619178 A JP 4619178A JP 4619178 A JP4619178 A JP 4619178A JP S54139015 A JPS54139015 A JP S54139015A
- Authority
- JP
- Japan
- Prior art keywords
- detecting
- resistors
- coil
- voltage waveform
- voltage
- 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
Landscapes
- Electromechanical Clocks (AREA)
- Control Of Stepping Motors (AREA)
Abstract
PURPOSE:To detect the loading state of a motor from voltage waveform induced at exciting coil in high performance by connecting a pair of detecting circuits and impedance element directly to both ends of the coil without via any gate element. CONSTITUTION:Detecting resistors 40, 41 and gates 42, 43 are connected to both ends of an exciting coil 3 connected to the output terminals 18, 19 of P and N MOSFET gates 10 to 13 forming a driving inverter. A waveform detecting circuit composed of the detecting resistors 40, 41 and voltage comparators 44, 45 detects whether the voltage waveform generated at the coil reaches higher than predetermin ed voltage value or not. Thus, the induced voltage waveform can be used to efficiently judge the rotation or stop of the rotor. The braking of the rotor can be switched by the resistors 40, 41 to eliminate the substrate effect occurred by floating the substrate from the power supply and ground at potential.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4619178A JPS54139015A (en) | 1978-04-19 | 1978-04-19 | Circuit for detecting operation of step motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4619178A JPS54139015A (en) | 1978-04-19 | 1978-04-19 | Circuit for detecting operation of step motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54139015A true JPS54139015A (en) | 1979-10-29 |
JPS6235360B2 JPS6235360B2 (en) | 1987-07-31 |
Family
ID=12740150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4619178A Granted JPS54139015A (en) | 1978-04-19 | 1978-04-19 | Circuit for detecting operation of step motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54139015A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996018237A1 (en) * | 1994-12-08 | 1996-06-13 | Citizen Watch Co., Ltd. | Motor driving device |
-
1978
- 1978-04-19 JP JP4619178A patent/JPS54139015A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996018237A1 (en) * | 1994-12-08 | 1996-06-13 | Citizen Watch Co., Ltd. | Motor driving device |
Also Published As
Publication number | Publication date |
---|---|
JPS6235360B2 (en) | 1987-07-31 |
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