JPH0239224U - - Google Patents

Info

Publication number
JPH0239224U
JPH0239224U JP1988117711U JP11771188U JPH0239224U JP H0239224 U JPH0239224 U JP H0239224U JP 1988117711 U JP1988117711 U JP 1988117711U JP 11771188 U JP11771188 U JP 11771188U JP H0239224 U JPH0239224 U JP H0239224U
Authority
JP
Japan
Prior art keywords
common terminal
main capacitor
switching element
control circuit
converter
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
Application number
JP1988117711U
Other languages
Japanese (ja)
Other versions
JPH0712981Y2 (en
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 filed Critical
Priority to JP1988117711U priority Critical patent/JPH0712981Y2/en
Publication of JPH0239224U publication Critical patent/JPH0239224U/ja
Application granted granted Critical
Publication of JPH0712981Y2 publication Critical patent/JPH0712981Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案を適用した写真用閃光撮影装置
の一実施例の回路図、第２図は従来の閃光撮影装
置の回路図である。 図において、１１……トランジスタ、１２，１
３……分圧抵抗、１６……基準電圧源、１９……
コンパレータ、２０……バツウフア回路、３０…
…制御ＩＣ（集積回路）である。 FIG. 1 is a circuit diagram of an embodiment of a photographic flash photography device to which the present invention is applied, and FIG. 2 is a circuit diagram of a conventional flash photography device. In the figure, 11...transistor, 12,1
3... Voltage dividing resistor, 16... Reference voltage source, 19...
Comparator, 20... Buffer circuit, 30...
...It is a control IC (integrated circuit).

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 発振スイツチング素子を含むＤＣ／ＤＣコンバ
ータと、該コンバータ出力によつて充電される主
コンデンサと、該主コンデンサに蓄積された電荷
を放電される被写体照明用放電管と、閃光撮影装
置のシーケンスを制御する制御回路と。前記主コ
ンデンサの充電レベルに相応した信号を前記制御
回路へ伝達すると共に前記コンバータ発振動作の
停止信号をカメラ側から閃光装置ユニツト側へ伝
達する共通端子と、前記制御回路から出力される
主コンデンサ充電完了信号に応答して充電完了検
出時の前記共通端子電位より高電位の電圧を前記
共通端子を介して前記カメラ側から閃光装置ユニ
ツト側へ供給する手段と、制御端子が前記共通端
子に接続され、前記共通端子より供給された高電
圧に応答して非動作状態から動作状態になり、前
記発振スイツチング素子の動作を停止させるスイ
ツチング素子とを具備することを特徴とする閃光
撮影装置。 Controls the sequence of a DC/DC converter including an oscillation switching element, a main capacitor that is charged by the output of the converter, a discharge tube for illuminating a subject from which the charge accumulated in the main capacitor is discharged, and a flash photography device. control circuit and. a common terminal that transmits a signal corresponding to the charge level of the main capacitor to the control circuit and a signal to stop the converter oscillation operation from the camera side to the flash device unit side; and a main capacitor charge output from the control circuit. means for supplying a voltage higher in potential than the common terminal potential at the time of detection of charging completion from the camera side to the flash device unit side via the common terminal in response to a completion signal; and a control terminal connected to the common terminal. , a switching element that changes from a non-operating state to an operating state in response to a high voltage supplied from the common terminal and stops the operation of the oscillation switching element.
JP1988117711U 1988-09-06 1988-09-06 Flash photography Expired - Lifetime JPH0712981Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988117711U JPH0712981Y2 (en) 1988-09-06 1988-09-06 Flash photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988117711U JPH0712981Y2 (en) 1988-09-06 1988-09-06 Flash photography

Publications (2)

Publication Number Publication Date
JPH0239224U true JPH0239224U (en) 1990-03-15
JPH0712981Y2 JPH0712981Y2 (en) 1995-03-29

Family

ID=31361408

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988117711U Expired - Lifetime JPH0712981Y2 (en) 1988-09-06 1988-09-06 Flash photography

Country Status (1)

Country Link
JP (1) JPH0712981Y2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5224403U (en) * 1975-08-12 1977-02-21
JPS5670537A (en) * 1979-11-14 1981-06-12 Nippon Kogaku Kk <Nikon> Display unit of availability for flashing
JPS5764730A (en) * 1980-10-08 1982-04-20 Sharp Corp Stroboscope flasher circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5224403U (en) * 1975-08-12 1977-02-21
JPS5670537A (en) * 1979-11-14 1981-06-12 Nippon Kogaku Kk <Nikon> Display unit of availability for flashing
JPS5764730A (en) * 1980-10-08 1982-04-20 Sharp Corp Stroboscope flasher circuit

Also Published As

Publication number Publication date
JPH0712981Y2 (en) 1995-03-29

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