JPS6459224A - Electromagnetically driven shutter - Google Patents
Electromagnetically driven shutterInfo
- Publication number
- JPS6459224A JPS6459224A JP21579987A JP21579987A JPS6459224A JP S6459224 A JPS6459224 A JP S6459224A JP 21579987 A JP21579987 A JP 21579987A JP 21579987 A JP21579987 A JP 21579987A JP S6459224 A JPS6459224 A JP S6459224A
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- specific position
- power
- displacement
- supplying
- 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
- Shutters For Cameras (AREA)
Abstract
PURPOSE:To precisely adjust the aperture characteristic of a shutter even in case of the variation of a driving voltage by controlling the interval of supplying a power to an electromagnetic after attaining a specific position according to the time necessary to attain the specific position obtained during the displacement from a 1st position to a 2nd position. CONSTITUTION:A photocoupler 20, etc., detects that the specific position obtained during the displacement from the 1st position to the 2nd position of permanent magnets 3 and 4 or shutter blades 5 and 6 is attained and according to the time necessary to attain the specific position, the interval of supplying the power from a power source; such as a battery, etc., in which the voltage varies, to the electromagnet 14 is controlled after attaining the specific position. Namely, when the time necessary for the displacement of the shutter blades 5 and 6 by a specific amount from a closing initial position to an opening direction is made to vary with the lapse of time and temperature characteristic, etc., of the battery the interval of supplying the power to the electromagnet 14 for driving the shutter is increased and decreased according to the length of the necessary time. Thus, the aperture characteristic of the shutter can be always kept constant or nearly constant.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62215799A JP2631103B2 (en) | 1987-08-28 | 1987-08-28 | Electromagnetic drive shutter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62215799A JP2631103B2 (en) | 1987-08-28 | 1987-08-28 | Electromagnetic drive shutter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6459224A true JPS6459224A (en) | 1989-03-06 |
JP2631103B2 JP2631103B2 (en) | 1997-07-16 |
Family
ID=16678439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62215799A Expired - Fee Related JP2631103B2 (en) | 1987-08-28 | 1987-08-28 | Electromagnetic drive shutter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2631103B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0329837U (en) * | 1989-07-28 | 1991-03-25 | ||
JP2008233643A (en) * | 2007-03-22 | 2008-10-02 | Korg Inc | Key displacement quantity detecting device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63167340A (en) * | 1986-12-29 | 1988-07-11 | Kyocera Corp | Electromagnetic driving shutter |
-
1987
- 1987-08-28 JP JP62215799A patent/JP2631103B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63167340A (en) * | 1986-12-29 | 1988-07-11 | Kyocera Corp | Electromagnetic driving shutter |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0329837U (en) * | 1989-07-28 | 1991-03-25 | ||
JP2008233643A (en) * | 2007-03-22 | 2008-10-02 | Korg Inc | Key displacement quantity detecting device |
Also Published As
Publication number | Publication date |
---|---|
JP2631103B2 (en) | 1997-07-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55156229A (en) | Suction air controller | |
JPS55112465A (en) | Proportional control valve | |
JPS57193729A (en) | Fuel shutoff device of fuel injection pump | |
CA2091707A1 (en) | Eddy current drive and motor control system for oil well pumping | |
JPS6459224A (en) | Electromagnetically driven shutter | |
ES2005246A6 (en) | Electromagnetically operable valve | |
JPS55144216A (en) | Electromagnetically driven slit exposure shutter | |
JPS569801A (en) | Automatic controller | |
EP0279592A3 (en) | Electromagnetic contactor with energy balanced closing system | |
BR8804302A (en) | ELECTROMAGNETICALLY COMMANDED FUEL INJECTION VALVE FOR DIESEL ENGINES | |
JPS6439011A (en) | Delay solenoid | |
JPS6483915A (en) | Method for controlling magnetically levitating device during lift-off | |
JPS5652542A (en) | Constant speed travelling device for vehicle | |
JPS64937A (en) | Shutter | |
JPS552268A (en) | Driving circuit of electromagnetically driven shutter | |
JPS5742029A (en) | Attraction type electromagnetic control shutter | |
JPS54153473A (en) | Controller for lifting magnet apparatus | |
JPS54155417A (en) | Control of induction motor | |
JPS6441429A (en) | Controller for continuously variable transmission equipped with direct connection mechanism | |
JPS6429293A (en) | Water feeder of washing machine | |
JPS55103708A (en) | Control of electromagnetic solenoid | |
JPS55159420A (en) | Electromagnetically driven shutter | |
JPS55109930A (en) | Setting method for counting value and buffer unit for lever | |
JPS54159623A (en) | Controller for engine driven generator | |
JPS5756907A (en) | Solenoid controlling circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |