JPS58188643U - Light emission control circuit in flash discharge light emitter - Google Patents
Light emission control circuit in flash discharge light emitterInfo
- Publication number
- JPS58188643U JPS58188643U JP8474682U JP8474682U JPS58188643U JP S58188643 U JPS58188643 U JP S58188643U JP 8474682 U JP8474682 U JP 8474682U JP 8474682 U JP8474682 U JP 8474682U JP S58188643 U JPS58188643 U JP S58188643U
- Authority
- JP
- Japan
- Prior art keywords
- light emission
- control circuit
- emission control
- light
- flash discharge
- 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
- Stroboscope Apparatuses (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Electronic Switches (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
第１図は従来例を示した閃光放電発光器回路図、第２図
は上記発光器に備えられた発光制御回路の動作電圧を示
す図、第３図は発光制御回路と発光停止回路のみを示し
た本考案の第１実施例を示す回路図、第４図及び第５図
は上記実施例の動作電圧を示す図、第６図は発光制御回
路と発光停止回路のみを示した本考案の第２実施例を示
す回路図である。
１２・・・主放電コンデンサ、１３・・・閃光放電管、
１７・・・トリガースイッチ、２２・・・発光制御回路
の電圧印加用トランジスタ、２５・・・フォト・トラン
ジスタ、２６・・・積分用コンデンサ、２７・・・ＰＵ
Ｔ。
３４・・・比較器をなすトランジスタ。
測ｆｆ１
ｖ９十そ−Ｉ
１、１゜
亨
ｍ−」−二
ｔ −綺藺−Figure 1 is a circuit diagram of a flash discharge light emitter showing a conventional example, Figure 2 is a diagram showing the operating voltage of the light emission control circuit provided in the light emitter, and Figure 3 shows only the light emission control circuit and light emission stop circuit. FIG. 4 and FIG. 5 are diagrams showing the operating voltage of the above embodiment, and FIG. 6 is a circuit diagram of the first embodiment of the present invention showing only the light emission control circuit and light emission stop circuit. FIG. 3 is a circuit diagram showing a second embodiment. 12... Main discharge capacitor, 13... Flash discharge tube,
17... Trigger switch, 22... Voltage application transistor of the light emission control circuit, 25... Photo transistor, 26... Integrating capacitor, 27... PU
T. 34...Transistor forming a comparator. Measurement ff1 v9juso-I 1,1゜亨m-''-twot-kii-
Claims (1)
備えた閃光放電発光器において、上記発光制御回路が、
被写体反射光を受光する受光器の光電変換作用によって
定まる測光信号と所定値の基準信号とを比較して発光停
止のための出力を発生する比較器と、この比較器の比較
動作初期過程で上記基準信号を所定値に達するまで変動
させる基準信号形成回路とを含み、上記両信号の比較初
期過程での電気雑音信号にもとすく誤動作を防止した閃
光放電発光器における発光制御回路。In a flash discharge light emitting device equipped with a light emission control circuit that determines the amount of light emission according to light reflected from a subject, the light emission control circuit comprises:
A comparator that generates an output for stopping light emission by comparing a photometric signal determined by the photoelectric conversion action of a light receiver that receives reflected light from a subject with a reference signal of a predetermined value, and A light emission control circuit for a flash discharge light emitting device, which includes a reference signal forming circuit that varies a reference signal until it reaches a predetermined value, and prevents malfunction due to electrical noise signals in the initial process of comparing both signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8474682U JPS58188643U (en) | 1982-06-09 | 1982-06-09 | Light emission control circuit in flash discharge light emitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8474682U JPS58188643U (en) | 1982-06-09 | 1982-06-09 | Light emission control circuit in flash discharge light emitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58188643U true JPS58188643U (en) | 1983-12-15 |
Family
ID=30093672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8474682U Pending JPS58188643U (en) | 1982-06-09 | 1982-06-09 | Light emission control circuit in flash discharge light emitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58188643U (en) |
-
1982
- 1982-06-09 JP JP8474682U patent/JPS58188643U/en active Pending
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