JPS61162125U - - Google Patents
Info
- Publication number
- JPS61162125U JPS61162125U JP1985045781U JP4578185U JPS61162125U JP S61162125 U JPS61162125 U JP S61162125U JP 1985045781 U JP1985045781 U JP 1985045781U JP 4578185 U JP4578185 U JP 4578185U JP S61162125 U JPS61162125 U JP S61162125U
- Authority
- JP
- Japan
- Prior art keywords
- light receiving
- receiving element
- impedance
- variable impedance
- detection signal
- 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
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Networks Using Active Elements (AREA)
- Control Of Amplification And Gain Control (AREA)
- Optical Communication System (AREA)
Description
第１図及び第２図は本考案の実施例の各回路図
、第３図は従来の光受信回路のブロツク図である
。
主要部分の符号の説明、１……受光素子、２…
…前置増幅回路、３……比較器、４，５……トラ
ンジスタ。
1 and 2 are circuit diagrams of embodiments of the present invention, and FIG. 3 is a block diagram of a conventional optical receiving circuit. Explanation of symbols of main parts, 1... Light receiving element, 2...
...Preamplifier circuit, 3... Comparator, 4, 5... Transistor.
Claims (1)
幅する増幅手段とからなる光受信回路であつて、
前記受光素子に流れる電流を検出してこの電流に
応じた検出信号を発生する手段と、この検出信号
のレベルと所定基準レベルとを比較してこの比較
結果に応じてインピーダンスが制御される可変イ
ンピーダンス手段とを有し、この可変インピーダ
ンス手段のインピーダンスを前記増幅手段の入力
に並列に挿入してなることを特徴とする光受信回
路。 An optical receiving circuit comprising a light receiving element and an amplification means for amplifying the light receiving output by the light receiving element,
means for detecting the current flowing through the light receiving element and generating a detection signal according to the current; and a variable impedance whose impedance is controlled by comparing the level of the detection signal with a predetermined reference level. 1. An optical receiving circuit comprising: a variable impedance means, and an impedance of the variable impedance means is inserted in parallel to an input of the amplification means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985045781U JPS61162125U (en) | 1985-03-28 | 1985-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985045781U JPS61162125U (en) | 1985-03-28 | 1985-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61162125U true JPS61162125U (en) | 1986-10-07 |
Family
ID=30559573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985045781U Pending JPS61162125U (en) | 1985-03-28 | 1985-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61162125U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5746544A (en) * | 1980-09-04 | 1982-03-17 | Fujitsu Ltd | Optical agc circuit |
-
1985
- 1985-03-28 JP JP1985045781U patent/JPS61162125U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5746544A (en) * | 1980-09-04 | 1982-03-17 | Fujitsu Ltd | Optical agc circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS61162125U (en) | ||
| JPS61166641U (en) | ||
| JPH0390513U (en) | ||
| JPH02111919U (en) | ||
| JPS59195817U (en) | High stability amplifier | |
| JPS62198708U (en) | ||
| JPH0246421U (en) | ||
| JPS62196415U (en) | ||
| JPS6146492U (en) | Tape end detection device | |
| JPS58187772U (en) | Signal output detection circuit | |
| JPS61197527U (en) | ||
| JPS6293830U (en) | ||
| JPS6358771U (en) | ||
| JPS611157U (en) | Light transmittance measuring device | |
| JPS5886555U (en) | light irradiation densitometer | |
| JPS62158916U (en) | ||
| JPS61187112U (en) | ||
| JPH02135871U (en) | ||
| JPS5956819U (en) | Detection circuit with temperature compensation | |
| JPH03101035U (en) | ||
| JPS58178649U (en) | infrared detection device | |
| JPS6348298U (en) | ||
| JPS61196555U (en) | ||
| JPH02150531U (en) | ||
| JPS645159U (en) |