JPH031697U - - Google Patents
Info
- Publication number
- JPH031697U JPH031697U JP1990048149U JP4814990U JPH031697U JP H031697 U JPH031697 U JP H031697U JP 1990048149 U JP1990048149 U JP 1990048149U JP 4814990 U JP4814990 U JP 4814990U JP H031697 U JPH031697 U JP H031697U
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- semiconductor switching
- motor
- power supply
- turned
- 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
- 239000003990 capacitor Substances 0.000 claims description 19
- 239000004065 semiconductor Substances 0.000 claims description 13
- 230000007423 decrease Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Details Of Cameras Including Film Mechanisms (AREA)
- Motor And Converter Starters (AREA)
- Control Of Direct Current Motors (AREA)
Description
第１図は本考案の一実施例のフイルム自動駆動
装置の回路構成図であり、第２図は本考案の別の
実施例のフイルム自動駆動装置の回路構成図であ
る。
主要部分の符号の説明、モータ起動用スイツチ
…ＳＷ２、起動用コンデンサ…Ｃ３、給電保持回
路…Ｑ４〜Ｑ６、放電路…Ｑ５，Ｄ１，Ｑ３、第
１の半導体スイツチング素子…Ｑ４、放電路…Ｑ
５，Ｑ５，Ｄ１、第１の半導体スイツチング素子
…Ｑ５、第３の半導体スイツチング素子…Ｑ６、
ダイオード…Ｄ１。
FIG. 1 is a circuit diagram of an automatic film drive device according to one embodiment of the present invention, and FIG. 2 is a circuit diagram of an automatic film drive device according to another embodiment of the present invention. Explanation of symbols of main parts, motor starting switch... SW2 , starting capacitor... C3 , power supply holding circuit... Q4 to Q6 , discharge path... Q5 , D1 , Q3 , first semiconductor switching element ...Q 4 , discharge path...Q
5 , Q5 , D1 , first semiconductor switching element... Q5 , third semiconductor switching element... Q6 ,
Diode... D1 .
補正 平２．６．８
考案の名称を次のように補正する。
考案の名称 電動カメラのモータ駆動回路
実用新案登録請求の範囲、図面の簡単な説明を
次のように補正する。Amendment 2.6.8 The name of the invention is amended as follows. Title of invention Motor drive circuit for electric camera The scope of the utility model registration claims and the brief description of the drawings are amended as follows.
【実用新案登録請求の範囲】
モータを起動させるためにオンする起動用スイ
ツチと、該スイツチに直列接続され該スイツチの
閉成により充電される起動用コンデンサと、該起
動用コンデンサの充電電流により付勢されて前記
モータへの給電を開始し、該充電電流の減少後も
該モータへの給電を保持する給電保持回路とを有
する電動カメラのモータ駆動回路において、前記
給電保持回路は、第１、第２、第３のトランジス
タと、電流の流通方向を一方向に規制する一方向
性素子とを含み、
該第１トランジスタのベースは前記起動用コン
デンサの一端と前記第２トランジスタのコレクタ
とに接続され、該第１トランジスタのエミツタは
電源の一方の電極に接続され、該第１トランジス
タのコレクタは前記第２トランジスタのベースに
接続され、
該第２トランジスタのエミツタは前記起動用コ
ンデンサの他端に接続され、該第２トランジスタ
のコレクタは前記第３トランジスタのベースに接
続され、
該第３トランジスタのエミツタは、前記電源の一
方の電極に接続され、該第３トランジスタのコレ
クタは前記モータの一端に接続され、
前記一方向素子は、前記第１トランジスタのベ
ースと前記起動用コンデンサの一端との接続点と
、前記第２トランジスタのコレクタとの間に挿入
され、
前記起動用スイツチのオンに伴う前記起動用コ
ンデンサの充電電流が前記第１トランジスタと前
記第２トランジスタとを共にオン状態にしてラツ
チ回路が形成されると共に、前記第３トランジス
タもオン状態となつて前記モータが起動し、前記
一方向素子は、前記起動用スイツチのオンに伴う
前記起動用コンデンサの充電電流が前記第３トラ
ンジスタのベースに流れることを防止し、一方前
記第２トランジスタがオン状態となることとに伴
つて前記起動用コンデンサが放電されることを許
すことを特徴とする電動カメラのモータ駆動回路
。[Claims for Utility Model Registration] A starting switch that is turned on to start the motor, a starting capacitor that is connected in series with the switch and is charged when the switch is closed, and a starting capacitor that is charged by the charging current of the starting capacitor. and a power supply holding circuit that starts supplying power to the motor when the charging current is activated, and maintains the supply of power to the motor even after the charging current decreases, the power supply holding circuit comprising: a first; It includes second and third transistors and a unidirectional element that regulates the direction of current flow in one direction, and the base of the first transistor is connected to one end of the starting capacitor and the collector of the second transistor. The emitter of the first transistor is connected to one electrode of a power supply, the collector of the first transistor is connected to the base of the second transistor, and the emitter of the second transistor is connected to the other end of the starting capacitor. connected, the collector of the second transistor is connected to the base of the third transistor, the emitter of the third transistor is connected to one electrode of the power supply, and the collector of the third transistor is connected to one end of the motor. the one-way element is inserted between a connection point between the base of the first transistor and one end of the starting capacitor and the collector of the second transistor, The charging current of the starting capacitor turns on both the first transistor and the second transistor to form a latch circuit, and the third transistor also turns on to start the motor and drive the motor in one direction. The device prevents the charging current of the starting capacitor from flowing to the base of the third transistor when the starting switch is turned on, and on the other hand, prevents the charging current of the starting capacitor from flowing to the base of the third transistor when the starting switch is turned on. A motor drive circuit for an electric camera, characterized in that it allows a capacitor to be discharged.
【図面の簡単な説明】
第１図はフイルム自動駆動装置の回路構成例を
示す図であり、第２図は本考案の一実施例のフイ
ルム自動駆動装置の回路構成図である。
主要部分の符号の説明、起動用スイツチ……Ｓ
Ｗ２起動用コンデンサ……Ｃ３、給電保持回路…
…Ｑ４，Ｑ５，Ｑ６，Ｄ１、第１のトランジスタ
……Ｑ４、第２のトランジスタ……Ｑ５、第３の
トランジスタ……Ｑ６、一方向素子……Ｄ１、モ
ータ……Ｍ。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an example of a circuit configuration of an automatic film drive device, and FIG. 2 is a diagram of a circuit configuration of an automatic film drive device according to an embodiment of the present invention. Explanation of symbols of main parts, start switch...S
W 2 Starting capacitor...C 3 , Power supply holding circuit...
... Q4 , Q5 , Q6 , D1 , first transistor... Q4 , second transistor... Q5 , third transistor... Q6 , unidirectional element... D1 , motor... ...M.
Claims (1)
デンサと； 該起動用コンデンサの充電電流により付勢され
てモータへの給電を開始し、該充電電流の減少後
も該モータへの給電を保持する給電保持回路とを
有する電動カメラのモータ駆動回路において、 前記給電保持回路は、前記起動用コンデンサに
流れる充電電流によつてオンとなる第１の半導体
スイツチング素子と、該第１の半導体スイツチン
グ素子がオンとなることに伴つてオンとなる第２
の半導体スイツチング素子とからなるラツチ回路
と、該第２の半導体スイツチング素子のオンに伴
つて形成される放電路とを含み、該放電路によつ
て前記起動用コンデンサを前記給電保持中に放電
させることを特徴とする電動カメラのモータ駆動
回路。 ２ 前記給電保持回路は、前記第２の半導体スイ
ツチング素子のオンに伴つてオンとなり前記モー
タへの給電路を形成する第３の半導体スイツチン
グ素子と、該第３の半導体スイツチング素子と前
記起動用コンデンサとの間に設けられたダイオー
ドとを含み、該ダイオードは前記コンデンサの充
電電流が該第３の半導体スイツチング素子に流れ
ることを阻止することを特徴とする実用新案登録
請求の範囲第１項記載の電動カメラのモータ駆動
回路。[Scope of Claim for Utility Model Registration] 1. A motor starting switch; A starting capacitor that is charged when the switch is closed; A starting capacitor that is energized by the charging current of the starting capacitor to start supplying power to the motor; In a motor drive circuit for an electric camera, the motor drive circuit includes a power supply holding circuit that maintains power supply to the motor even after a charging current decreases, wherein the power supply holding circuit is a first motor that is turned on by a charging current flowing to the starting capacitor. a second semiconductor switching element that is turned on as the first semiconductor switching element is turned on;
a latch circuit consisting of a second semiconductor switching element, and a discharge path formed when the second semiconductor switching element is turned on, and the start-up capacitor is discharged by the discharge path while the power supply is maintained. A motor drive circuit for an electric camera characterized by: 2. The power supply holding circuit includes a third semiconductor switching element that is turned on when the second semiconductor switching element is turned on and forms a power supply path to the motor, and the third semiconductor switching element and the starting capacitor. and a diode provided between the third semiconductor switching element and the third semiconductor switching element, wherein the diode prevents the charging current of the capacitor from flowing to the third semiconductor switching element. Motor drive circuit for electric camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990048149U JPH031697U (en) | 1990-05-10 | 1990-05-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990048149U JPH031697U (en) | 1990-05-10 | 1990-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031697U true JPH031697U (en) | 1991-01-09 |
Family
ID=31564706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990048149U Pending JPH031697U (en) | 1990-05-10 | 1990-05-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587270U (en) * | 1978-12-12 | 1980-06-16 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5127326A (en) * | 1974-08-30 | 1976-03-06 | Minolta Camera Kk | |
| JPS57100883A (en) * | 1980-10-23 | 1982-06-23 | Commissariat Energie Atomique | Device for overhauling metallic part |
-
1990
- 1990-05-10 JP JP1990048149U patent/JPH031697U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5127326A (en) * | 1974-08-30 | 1976-03-06 | Minolta Camera Kk | |
| JPS57100883A (en) * | 1980-10-23 | 1982-06-23 | Commissariat Energie Atomique | Device for overhauling metallic part |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587270U (en) * | 1978-12-12 | 1980-06-16 |
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