JPH01132113U - - Google Patents
Info
- Publication number
- JPH01132113U JPH01132113U JP1988026793U JP2679388U JPH01132113U JP H01132113 U JPH01132113 U JP H01132113U JP 1988026793 U JP1988026793 U JP 1988026793U JP 2679388 U JP2679388 U JP 2679388U JP H01132113 U JPH01132113 U JP H01132113U
- Authority
- JP
- Japan
- Prior art keywords
- photodiode
- conversion circuit
- switches
- switch
- resistor
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Amplifiers (AREA)
- Optical Communication System (AREA)
Description
第１図は本考案に係る光電変換回路の一実施例
を示す構成回路図、第２図および第３図は第１図
装置の等価回路を示す図、第４図および第５図は
第１図装置の変形例を示す構成回路図、第６図お
よび第７図は従来の光電変換回路を示す構成回路
図である。
１…フオトダイオード、４…トランスインピー
ダンス型変換回路、Ｒ２…抵抗、Ｓ１，Ｓ３…第
１のスイツチ、Ｓ２…第２のスイツチ。
FIG. 1 is a configuration circuit diagram showing one embodiment of the photoelectric conversion circuit according to the present invention, FIGS. 2 and 3 are diagrams showing equivalent circuits of the device shown in FIG. 1, and FIGS. FIGS. 6 and 7 are circuit diagrams showing a modification of the device; FIGS. 6 and 7 are circuit diagrams showing a conventional photoelectric conversion circuit. DESCRIPTION OF SYMBOLS 1...Photodiode, 4...Transimpedance type conversion circuit, R2 ...Resistor, S1 , S3 ...First switch, S2 ...Second switch.
Claims (1)
トダイオードと、このフオトダイオードの一端と
逆バイアス電圧との間に接続する第１のスイツチ
と、前記フオトダイオードと直列に接続する抵抗
と、前記フオトダイオードの前記一端に接続する
トランスインピーダンス型変換回路と、このトラ
ンスインピーダンス型変換回路の出力電圧と前記
抵抗の一端に生じる電圧のいずれか一方を選択す
る第２のスイツチとを備え、２つのスイツチを切
換えることによりフオトダイオードが無バイアス
または逆バイアスで動作するように構成したこと
を特徴とする光電変換回路。 a photodiode that generates a current corresponding to the power of incident light; a first switch connected between one end of the photodiode and a reverse bias voltage; a resistor connected in series with the photodiode; and a second switch that selects either the output voltage of the transimpedance conversion circuit or the voltage generated at one end of the resistor, and switches between the two switches. A photoelectric conversion circuit characterized in that the photodiode is configured to operate with no bias or reverse bias.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988026793U JPH01132113U (en) | 1988-02-29 | 1988-02-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988026793U JPH01132113U (en) | 1988-02-29 | 1988-02-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01132113U true JPH01132113U (en) | 1989-09-07 |
Family
ID=31248738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988026793U Pending JPH01132113U (en) | 1988-02-29 | 1988-02-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01132113U (en) |
-
1988
- 1988-02-29 JP JP1988026793U patent/JPH01132113U/ja active Pending