JPH0289333U - - Google Patents
Info
- Publication number
- JPH0289333U JPH0289333U JP16980988U JP16980988U JPH0289333U JP H0289333 U JPH0289333 U JP H0289333U JP 16980988 U JP16980988 U JP 16980988U JP 16980988 U JP16980988 U JP 16980988U JP H0289333 U JPH0289333 U JP H0289333U
- Authority
- JP
- Japan
- Prior art keywords
- phototransistor
- voltage
- current
- bias
- photocurrent
- 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
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
第１図は本考案の光検知装置の一例を示す回路
図、第２図は従来の光検知装置の回路図である。
尚、図中１はフオトトランジスタ、２は電流電
圧変換器、３は直流電源、５は差動増幅器である
。
FIG. 1 is a circuit diagram showing an example of the photodetecting device of the present invention, and FIG. 2 is a circuit diagram of a conventional photodetecting device. In the figure, 1 is a phototransistor, 2 is a current-voltage converter, 3 is a DC power supply, and 5 is a differential amplifier.
Claims (1)
れる光電流をこれに比例した電圧に変換する電流
電圧変換器と、 前記フオトトランジスタにバイアスを印加する
直流電源と、 前記フオトトランジスタに印加されるバイアス
電圧と前記電流電圧変換器の出力電圧との差分を
演算増幅して出力する差動増幅器と、 を備えてなる光検知装置。[Claims for Utility Model Registration] A phototransistor, a current-voltage converter that converts a photocurrent flowing in response to light incident on the phototransistor into a voltage proportional to the photocurrent, and a DC power supply that applies a bias to the phototransistor. and a differential amplifier that operationally amplifies and outputs the difference between the bias voltage applied to the phototransistor and the output voltage of the current-voltage converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16980988U JPH0289333U (en) | 1988-12-28 | 1988-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16980988U JPH0289333U (en) | 1988-12-28 | 1988-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0289333U true JPH0289333U (en) | 1990-07-16 |
Family
ID=31460198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16980988U Pending JPH0289333U (en) | 1988-12-28 | 1988-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0289333U (en) |
-
1988
- 1988-12-28 JP JP16980988U patent/JPH0289333U/ja active Pending
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