JPS5867317U - Camera power circuit with electric shutter - Google Patents
Camera power circuit with electric shutterInfo
- Publication number
- JPS5867317U JPS5867317U JP16121881U JP16121881U JPS5867317U JP S5867317 U JPS5867317 U JP S5867317U JP 16121881 U JP16121881 U JP 16121881U JP 16121881 U JP16121881 U JP 16121881U JP S5867317 U JPS5867317 U JP S5867317U
- Authority
- JP
- Japan
- Prior art keywords
- state
- circuit
- power supply
- electric shutter
- inverted
- 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
Links
Landscapes
- Exposure Control For Cameras (AREA)
- Shutters For Cameras (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案の一実施例を示した回路図である。
ＳＷ２・・・レリーズスイッチ、ＳＷ３・・・露光時間
計薮開始用のスイッチ、Ｔ１・・・給電保持用のトラン
ジスタ、ＦＦ・・・フリップフロップ回路、Ｃ１及びＲ
１・・・レリーズ信号の発生からＳＷ３の開放までの時
間を、 監視する時定数回路を構成するコンデンサ及び
抵抗、ＡＧ・・・アンドゲート回路。The drawing is a circuit diagram showing an embodiment of the present invention. SW2...Release switch, SW3...Switch for starting the exposure time meter, T1...Transistor for holding power supply, FF...Flip-flop circuit, C1 and R
1... A capacitor and a resistor forming a time constant circuit that monitors the time from generation of the release signal to opening of SW3, AG... AND gate circuit.
Claims (1)
ッタ機構をレリーズし、またレリーズスイッチの閉成信
号により回路への給電状態を保持する電気シャッタを備
えたカメラの電源回路において、 前記給電保持信号により動作を開始して所定時間後に出
力状態が反転する時間形成回路と、シャッタ機構内にお
いて、緊張状態では第１の状態にあり、緊張状態が解除
されて動作することにより第２の状態へ反転するスイッ
チの夫々の状態に対応して反転した出力を発生する判別
回路と、前記時間形成回路の出力状態が反転した時点に
おいて、前記判別回路がスイッチの第１の状態を出力し
ている時には、前記給電保持状態を解除させるゲート回
路と、 を設けたことを特徴とする電気シャッタを備えたカメラ
の電源回路。[Claim for Utility Model Registration] Power supply circuit for a camera equipped with an electric shutter that activates an electromagnet when the release switch is closed and releases the shutter mechanism, and maintains the power supply state to the circuit by the release switch closing signal. In the above, a time forming circuit whose output state is inverted after a predetermined period of time after starting operation in response to the power supply holding signal, and a shutter mechanism, which are in the first state in the tension state and operate after the tension state is released, a discrimination circuit that generates an inverted output in response to each state of the switch inverting to a second state; and at a time when the output state of the time forming circuit is inverted, the discrimination circuit detects the first state of the switch. A power supply circuit for a camera equipped with an electric shutter, comprising: a gate circuit that releases the power supply holding state when outputting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16121881U JPS5867317U (en) | 1981-10-30 | 1981-10-30 | Camera power circuit with electric shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16121881U JPS5867317U (en) | 1981-10-30 | 1981-10-30 | Camera power circuit with electric shutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5867317U true JPS5867317U (en) | 1983-05-07 |
Family
ID=29953595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16121881U Pending JPS5867317U (en) | 1981-10-30 | 1981-10-30 | Camera power circuit with electric shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5867317U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5441130A (en) * | 1977-09-08 | 1979-04-02 | Minolta Camera Co Ltd | Electric power switch circuit for camera |
| JPS5557830A (en) * | 1978-10-23 | 1980-04-30 | Canon Inc | Power supply holding device of camera |
| JPS5757423B2 (en) * | 1975-07-29 | 1982-12-04 | Ytong International Ab |
-
1981
- 1981-10-30 JP JP16121881U patent/JPS5867317U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5757423B2 (en) * | 1975-07-29 | 1982-12-04 | Ytong International Ab | |
| JPS5441130A (en) * | 1977-09-08 | 1979-04-02 | Minolta Camera Co Ltd | Electric power switch circuit for camera |
| JPS5557830A (en) * | 1978-10-23 | 1980-04-30 | Canon Inc | Power supply holding device of camera |
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