JPS5691201A - Chopper control device in light signal observing apparatus - Google Patents
Chopper control device in light signal observing apparatusInfo
- Publication number
- JPS5691201A JPS5691201A JP16862879A JP16862879A JPS5691201A JP S5691201 A JPS5691201 A JP S5691201A JP 16862879 A JP16862879 A JP 16862879A JP 16862879 A JP16862879 A JP 16862879A JP S5691201 A JPS5691201 A JP S5691201A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- prescribed
- circuit
- chopper
- signal
- 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
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
PURPOSE:To operate a DC motor driving chopper stably and surely by so controlling the same that prescribed voltage is applied to a motor by a prescribed circuit and the motor stops in the prescribed position via a prescribed hysteresis circuit when the position deviation of the motor stop position is detected by way of the rotation synchronizing signal of the photodetecting part of the DC motor driving chopper. CONSTITUTION:When an operation change-over signal L (DC mode) is inputted to the input terminal 223 of a motor control circuit, the outputs of FFs 250(Q), 251(Q') and the outputs of AND circuits 256, 255 rise to L and Trs 246, 145 go off; therefore, a motor driving circuit 262 causes a DC motor 211 to run by the prescribed voltage having been set via a variable resistance 261, so that the light signal is chopped by a rotary disc 205. When an H (AC mode) signal is inputted to an input terminal 223, the pulses S of the frquency (f) of a photodetecting part 215B go through an AND circuit 254, monostable multivibrators 252, 253, AND circuits 257-259, etc. thereby so controlling the motor 211 as to run on the prescribed voltage and stop in the prescribed position. Hence, a chopper 205 is operated stably and surely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16862879A JPS5691201A (en) | 1979-12-25 | 1979-12-25 | Chopper control device in light signal observing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16862879A JPS5691201A (en) | 1979-12-25 | 1979-12-25 | Chopper control device in light signal observing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5691201A true JPS5691201A (en) | 1981-07-24 |
| JPS6259283B2 JPS6259283B2 (en) | 1987-12-10 |
Family
ID=15871571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16862879A Granted JPS5691201A (en) | 1979-12-25 | 1979-12-25 | Chopper control device in light signal observing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5691201A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01229223A (en) * | 1988-03-09 | 1989-09-12 | Osaka Prefecture | Optical shutter |
| JPH01135417U (en) * | 1988-03-09 | 1989-09-18 | ||
| US6558323B2 (en) | 2000-11-29 | 2003-05-06 | Olympus Optical Co., Ltd. | Ultrasound transducer array |
| CN105467375A (en) * | 2016-01-18 | 2016-04-06 | 中国科学技术大学 | Laser radar subsequent optical path chopper disk output frequency stabilizing method |
-
1979
- 1979-12-25 JP JP16862879A patent/JPS5691201A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01229223A (en) * | 1988-03-09 | 1989-09-12 | Osaka Prefecture | Optical shutter |
| JPH01135417U (en) * | 1988-03-09 | 1989-09-18 | ||
| US6558323B2 (en) | 2000-11-29 | 2003-05-06 | Olympus Optical Co., Ltd. | Ultrasound transducer array |
| CN105467375A (en) * | 2016-01-18 | 2016-04-06 | 中国科学技术大学 | Laser radar subsequent optical path chopper disk output frequency stabilizing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6259283B2 (en) | 1987-12-10 |
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