JPS61149862U - - Google Patents
Info
- Publication number
- JPS61149862U JPS61149862U JP3358785U JP3358785U JPS61149862U JP S61149862 U JPS61149862 U JP S61149862U JP 3358785 U JP3358785 U JP 3358785U JP 3358785 U JP3358785 U JP 3358785U JP S61149862 U JPS61149862 U JP S61149862U
- Authority
- JP
- Japan
- Prior art keywords
- light
- emitting element
- light emitting
- output
- rectifying
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
第１図は本考案の実施例装置の回路図、第２図
は従来装置の回路図である。
１は交流電源、２は光源、３は光導電素子、４
，５，１６は発光ダイオード、６と７はホトトラ
ンジスタ、ＰＣ１とＰＣ２はそれぞれ第１と第２
のホトカプラ、８，１０，１４はオペアンプ、９
は整流用ダイオード、１３は放電用スイツチ、１
５は電流制御用トランジスタを示す。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional device. 1 is an AC power supply, 2 is a light source, 3 is a photoconductive element, 4
, 5 and 16 are light emitting diodes, 6 and 7 are phototransistors, and PC1 and PC2 are the first and second transistors, respectively.
photocouplers, 8, 10, 14 are operational amplifiers, 9
is a rectifier diode, 13 is a discharge switch, 1
5 indicates a current control transistor.
Claims (1)
子と、 前記交流電流により半周期毎に発光する逆並列
接続された第１と第２の発光素子と、 前記第１と第２の発光素子の発光光を受光する
ものであつて並列接続され、低圧の直流電圧が加
えられる第１と第２の受光素子と、 前記第１と第２の受光素子の出力を加算する加
算手段と、 前記加算手段の出力を整流する整流手段と、 前記整流手段の出力に対応して電流制御を行な
う制御手段と、 前記制御手段の制御出力に対応した発光光を前
記光電素子に加える第３の発光素子とを備えた分
析装置用光源の定電流制御装置。[Claims for Utility Model Registration] A photoconductive element that controls an alternating current flowing through the light source; a first and second light emitting element connected in antiparallel that emit light every half cycle due to the alternating current; and the first light emitting element. and a first and second light receiving element which receive the emitted light of the second light emitting element and which are connected in parallel and to which a low DC voltage is applied; and adding the outputs of the first and second light receiving elements. rectifying means for rectifying the output of the adding means; control means for controlling a current in response to the output of the rectifying means; and directing emitted light corresponding to the control output of the control means to the photoelectric element. A constant current control device for a light source for an analyzer, including a third light emitting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3358785U JPS61149862U (en) | 1985-03-09 | 1985-03-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3358785U JPS61149862U (en) | 1985-03-09 | 1985-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61149862U true JPS61149862U (en) | 1986-09-16 |
Family
ID=30536175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3358785U Pending JPS61149862U (en) | 1985-03-09 | 1985-03-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61149862U (en) |
-
1985
- 1985-03-09 JP JP3358785U patent/JPS61149862U/ja active Pending
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