JPS56147136A - Strobe reporting circuit - Google Patents

Strobe reporting circuit

Info

Publication number
JPS56147136A
JPS56147136A JP5027080A JP5027080A JPS56147136A JP S56147136 A JPS56147136 A JP S56147136A JP 5027080 A JP5027080 A JP 5027080A JP 5027080 A JP5027080 A JP 5027080A JP S56147136 A JPS56147136 A JP S56147136A
Authority
JP
Japan
Prior art keywords
circuit
charging completion
strobe
differentiating
terminal
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
JP5027080A
Other languages
Japanese (ja)
Inventor
Hirohisa Nikukura
Terusato Tajima
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP5027080A priority Critical patent/JPS56147136A/en
Publication of JPS56147136A publication Critical patent/JPS56147136A/en
Pending 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • 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
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

PURPOSE:To confirm charging completion of a strobe while seeing a finder, by the constitution provided with a latch circuit which accepts or inhibits a strobe charging completion signal to hold it, a flip-flop circuit, a differentiating circuit, etc. CONSTITUTION:When charging completion signal H is input to charging completion input terminal 1, the output terminal of latch circuit 2 becomes H, and consequently, SR flip-flop circuit 5 is set, and PNP transistor 9 is turned on, and main electronic circuit 19 starts the operation. Then, clock pulses of a prescribed frequency are obtained at output signal terminal 21 and are supplied to input terminal 16 of waveform differentiating circuit 10 to start the differentiating operation. As the result, a single pulse is generated at output terminal 18 of differentiating circuit 10 and is applied to the base of PNP transistor 27 through two-input NAND gate 20, and piezoelectric buzzer element 28 is sounded with a prescribed oscillation frequency.
JP5027080A 1980-04-18 1980-04-18 Strobe reporting circuit Pending JPS56147136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5027080A JPS56147136A (en) 1980-04-18 1980-04-18 Strobe reporting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5027080A JPS56147136A (en) 1980-04-18 1980-04-18 Strobe reporting circuit

Publications (1)

Publication Number Publication Date
JPS56147136A true JPS56147136A (en) 1981-11-14

Family

ID=12854256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5027080A Pending JPS56147136A (en) 1980-04-18 1980-04-18 Strobe reporting circuit

Country Status (1)

Country Link
JP (1) JPS56147136A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02193131A (en) * 1989-01-23 1990-07-30 Canon Inc Flashing device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5159481A (en) * 1974-11-20 1976-05-24 Sekoh Giken Kk CHOKODENSHI HATSUKOKINO KEIKO KUSOCHI
JPS5512929A (en) * 1978-07-12 1980-01-29 West Electric Co Ltd Charging voltage notifying device for electronic flashing equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5159481A (en) * 1974-11-20 1976-05-24 Sekoh Giken Kk CHOKODENSHI HATSUKOKINO KEIKO KUSOCHI
JPS5512929A (en) * 1978-07-12 1980-01-29 West Electric Co Ltd Charging voltage notifying device for electronic flashing equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02193131A (en) * 1989-01-23 1990-07-30 Canon Inc Flashing device

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