JPS5548681A - Measuring device for electronic watch - Google Patents
Measuring device for electronic watchInfo
- Publication number
- JPS5548681A JPS5548681A JP12294678A JP12294678A JPS5548681A JP S5548681 A JPS5548681 A JP S5548681A JP 12294678 A JP12294678 A JP 12294678A JP 12294678 A JP12294678 A JP 12294678A JP S5548681 A JPS5548681 A JP S5548681A
- Authority
- JP
- Japan
- Prior art keywords
- rotation
- motor
- circuit
- driving
- watch
- 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)
Abstract
PURPOSE: To secure a steady and easy detection for the rotation and non-rotation of the step motor at the measuring time of the watch rough torque by setting both the highter and lower limits of the driving pulse duration for the step motor.
CONSTITUTION: When measuring the ordinary driving torque of the watch, the driving pulse which is generated once every second and limited its duration to the lowest level by time reference oscillator circuit 304 and control circuit 300, drives step motor 302 via motor driving circuit 301. With rotation of motor 302, the specified induced voltage is obtained at the driving coil of motor 302 due to vibrations of the rotor caused by damping to be detected through rotation detection circuit 303. Thus the rotation and non-rotation are displayed for the motor at display unit 306. And in the case of non-rotation of the motor, the driving pulse duration to be applied to circuit 301 via operation circuit 305 is switched to the set upper limit level. Thus the rotation and non-rotation of the motor can be detected in a steady and easy way. As a result, an easy and assured measurement is possible for the watch rough torque due to the driving pulse duration.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12294678A JPS5548681A (en) | 1978-10-04 | 1978-10-04 | Measuring device for electronic watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12294678A JPS5548681A (en) | 1978-10-04 | 1978-10-04 | Measuring device for electronic watch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5548681A true JPS5548681A (en) | 1980-04-07 |
JPS6128112B2 JPS6128112B2 (en) | 1986-06-28 |
Family
ID=14848521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12294678A Granted JPS5548681A (en) | 1978-10-04 | 1978-10-04 | Measuring device for electronic watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5548681A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS518597A (en) * | 1974-07-10 | 1976-01-23 | Taisei Denshi Kk | TAINETSUSEIKINZOKUHAKUMAKUTEIKOTAITANSHINO SEIZOHOHO |
JPS62172701A (en) * | 1986-01-27 | 1987-07-29 | スタツクス工業株式会社 | Resistor for audio equipment |
USRE38197E1 (en) | 1988-06-17 | 2003-07-22 | Seiko Epson Corporation | Multifunction electronic analog timepiece |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62219335A (en) * | 1986-03-20 | 1987-09-26 | Ricoh Co Ltd | Tracking signal detecting method |
-
1978
- 1978-10-04 JP JP12294678A patent/JPS5548681A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS518597A (en) * | 1974-07-10 | 1976-01-23 | Taisei Denshi Kk | TAINETSUSEIKINZOKUHAKUMAKUTEIKOTAITANSHINO SEIZOHOHO |
JPS5746202B2 (en) * | 1974-07-10 | 1982-10-01 | ||
JPS62172701A (en) * | 1986-01-27 | 1987-07-29 | スタツクス工業株式会社 | Resistor for audio equipment |
USRE38197E1 (en) | 1988-06-17 | 2003-07-22 | Seiko Epson Corporation | Multifunction electronic analog timepiece |
Also Published As
Publication number | Publication date |
---|---|
JPS6128112B2 (en) | 1986-06-28 |
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