JPS5584928A - Electric shutter equipped with shutter speed display device - Google Patents

Electric shutter equipped with shutter speed display device

Info

Publication number
JPS5584928A
JPS5584928A JP6426979A JP6426979A JPS5584928A JP S5584928 A JPS5584928 A JP S5584928A JP 6426979 A JP6426979 A JP 6426979A JP 6426979 A JP6426979 A JP 6426979A JP S5584928 A JPS5584928 A JP S5584928A
Authority
JP
Japan
Prior art keywords
current
ammeter
transistor
shutter speed
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.)
Pending
Application number
JP6426979A
Other languages
Japanese (ja)
Inventor
Masashi Yamato
Toshinobu Yuo
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.)
Kyocera Corp
Yashica Co Ltd
Original Assignee
Kyocera Corp
Yashica Co Ltd
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 Kyocera Corp, Yashica Co Ltd filed Critical Kyocera Corp
Priority to JP6426979A priority Critical patent/JPS5584928A/en
Publication of JPS5584928A publication Critical patent/JPS5584928A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)

Abstract

PURPOSE: To enable display of shutter speed and battery check function simultaneously, by connecting a display part to an external light illumination memory circuit and providing a battery check circuit to disable the display part when the supply voltage drops.
CONSTITUTION: The brightness of an object is converted to an electric signal by means of Cds 5, and is amplified by an amplifier 12. This output is applied to a transistor 9, and a current I0 flows into the collector thereof. This current I0 is changed to a collector current I0' by a transistor 15 to charge a capacitor 13. Also, the current I0' flows into an ammeter 33, and the indication of the ammeter 33 displays the shutter speed. When the voltage of a power source 1 drops, a transistor 26 is cut off, so that the ammeter 33 does not operate, showing that the power source 1 cannot be used. Therefore, the battery may be always checked.
COPYRIGHT: (C)1980,JPO&Japio
JP6426979A 1979-05-23 1979-05-23 Electric shutter equipped with shutter speed display device Pending JPS5584928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6426979A JPS5584928A (en) 1979-05-23 1979-05-23 Electric shutter equipped with shutter speed display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6426979A JPS5584928A (en) 1979-05-23 1979-05-23 Electric shutter equipped with shutter speed display device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP49093221A Division JPS5121137A (en) 1974-08-16 1974-08-16

Publications (1)

Publication Number Publication Date
JPS5584928A true JPS5584928A (en) 1980-06-26

Family

ID=13253307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6426979A Pending JPS5584928A (en) 1979-05-23 1979-05-23 Electric shutter equipped with shutter speed display device

Country Status (1)

Country Link
JP (1) JPS5584928A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4835383B1 (en) * 1969-08-19 1973-10-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4835383B1 (en) * 1969-08-19 1973-10-27

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