JPH0123770B2 - - Google Patents

Info

Publication number
JPH0123770B2
JPH0123770B2 JP17433481A JP17433481A JPH0123770B2 JP H0123770 B2 JPH0123770 B2 JP H0123770B2 JP 17433481 A JP17433481 A JP 17433481A JP 17433481 A JP17433481 A JP 17433481A JP H0123770 B2 JPH0123770 B2 JP H0123770B2
Authority
JP
Japan
Prior art keywords
transistor
current
current source
collector
shutter
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.)
Expired
Application number
JP17433481A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5875120A (ja
Inventor
Toshihide Myake
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP17433481A priority Critical patent/JPS5875120A/ja
Publication of JPS5875120A publication Critical patent/JPS5875120A/ja
Publication of JPH0123770B2 publication Critical patent/JPH0123770B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/083—Analogue circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
JP17433481A 1981-10-29 1981-10-29 電子制御シヤツタ回路 Granted JPS5875120A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17433481A JPS5875120A (ja) 1981-10-29 1981-10-29 電子制御シヤツタ回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17433481A JPS5875120A (ja) 1981-10-29 1981-10-29 電子制御シヤツタ回路

Publications (2)

Publication Number Publication Date
JPS5875120A JPS5875120A (ja) 1983-05-06
JPH0123770B2 true JPH0123770B2 (https=) 1989-05-08

Family

ID=15976819

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17433481A Granted JPS5875120A (ja) 1981-10-29 1981-10-29 電子制御シヤツタ回路

Country Status (1)

Country Link
JP (1) JPS5875120A (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60108826A (ja) * 1983-11-18 1985-06-14 Ricoh Co Ltd 自動露出制御回路

Also Published As

Publication number Publication date
JPS5875120A (ja) 1983-05-06

Similar Documents

Publication Publication Date Title
JP2836547B2 (ja) 基準電流回路
US3670637A (en) Automatic timing network for camera shutters
US3419325A (en) Motion picture camera fade-in and fade-out control arrangement
US3718849A (en) Voltage regulators for use in battery charging systems
US3977011A (en) Light measuring apparatus
US3746892A (en) Output voltage regulation system
JPH0123770B2 (https=)
US4309092A (en) Automatic exposure control circuit for camera
US4083059A (en) Automatic exposure control system for flash photography
US4037236A (en) Switching circuit for electric shutter
US4134653A (en) Servoamplifier in an automatic diaphragm controlling device of a camera
US3970874A (en) Circuitry for controlling shutter time in accordance with a manually adjustable resistor
JPS622294B2 (https=)
US4124283A (en) Fade-in and fade-out device of an automatic servomechanism of diaphragm in a cinecamera
JPS581403B2 (ja) 光起電力素子を用いた自動露出時間制御回路
US4444481A (en) Exposure control circuit for a camera
US4106035A (en) Photometric circuit
US4189221A (en) Electrical shutter circuit
US3503314A (en) Photographic exposure control system
US4180310A (en) Photometric circuit
US4331401A (en) Exposure control system for a photographic camera
US4550997A (en) Automatic exposure control circuit
US4498753A (en) Photometric apparatus for cameras
US4053908A (en) Exposure multiple setting device for programming electric shutter
US4236801A (en) Exposure factor switching circuit