JPS6222572U - - Google Patents
Info
- Publication number
- JPS6222572U JPS6222572U JP11391085U JP11391085U JPS6222572U JP S6222572 U JPS6222572 U JP S6222572U JP 11391085 U JP11391085 U JP 11391085U JP 11391085 U JP11391085 U JP 11391085U JP S6222572 U JPS6222572 U JP S6222572U
- Authority
- JP
- Japan
- Prior art keywords
- photoelectric switch
- impedance element
- input terminal
- amplifier circuit
- emission intensity
- 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
- 239000003990 capacitor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Amplifiers (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Electronic Switches (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Description
第１図は本考案の光電スイツチ対数増幅回路の
実施例１の回路図、第２図ａ，ｂは同上の回路の
一部と置換可能な回路の要部回路図、第３図は同
上の実施例２の回路図、第４図は光電スイツチの
ブロツク図、第５図は従来例の回路図、第６図ａ
〜ｃ及び第７図ａ〜ｃは本考案と従来のノイズ電
圧の説明図であり、Ｄは帰還ダイオード、Ａは増
幅器、Ｚｐは並列インピーダンス要素、Ｚｃは補
償インピーダンス要素、ＺＩはインピーダンス要
素である。
Figure 1 is a circuit diagram of Embodiment 1 of the photoelectric switch logarithmic amplifier circuit of the present invention, Figures 2a and b are main part circuit diagrams of a circuit that can replace a part of the same circuit, and Figure 3 is the same as the same circuit. The circuit diagram of the second embodiment, Figure 4 is the block diagram of the photoelectric switch, Figure 5 is the circuit diagram of the conventional example, and Figure 6 a.
~c and Figures 7 a to c are explanatory diagrams of the noise voltage of the present invention and the conventional one, where D is a feedback diode, A is an amplifier, Zp is a parallel impedance element, Zc is a compensation impedance element, and ZI is an impedance element. It is.
Claims (1)
して、投光素子として使用されるＬＥＤの発光強
度に比例した入力信号を、増幅器入力端子に印加
し、該増幅器出力端子と上記入力端子を帰還ダイ
オードで接続した光電スイツチ対数増幅回路にお
いて、上記増幅器入力端子とアース間に接続した
並列インピーダンス要素と、上記ＬＥＤの温度変
化に伴なう発光強度の変化を相殺して、上記光電
スイツチ対数増幅回路の出力レベルの温度変化に
よるドリフトを抑制する補償インピーダンス要素
とを備えたことを特徴とする光電スイツチ対数増
幅回路。 An input signal proportional to the emission intensity of an LED used as a light emitting element is applied to an amplifier input terminal via an impedance element such as a resistor or a capacitor, and the amplifier output terminal and the input terminal are connected by a feedback diode. In the photoelectric switch logarithmic amplifier circuit, the output level of the photoelectric switch logarithmic amplifier circuit is adjusted by canceling the change in the light emission intensity due to the temperature change of the LED with the parallel impedance element connected between the amplifier input terminal and the ground. A photoelectric switch logarithmic amplifier circuit characterized by comprising a compensation impedance element that suppresses drift due to temperature changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11391085U JPS6222572U (en) | 1985-07-25 | 1985-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11391085U JPS6222572U (en) | 1985-07-25 | 1985-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6222572U true JPS6222572U (en) | 1987-02-10 |
Family
ID=30996154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11391085U Pending JPS6222572U (en) | 1985-07-25 | 1985-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6222572U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0285710U (en) * | 1988-12-21 | 1990-07-05 |
-
1985
- 1985-07-25 JP JP11391085U patent/JPS6222572U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0285710U (en) * | 1988-12-21 | 1990-07-05 | ||
| JPH0714496Y2 (en) * | 1988-12-21 | 1995-04-10 | 株式会社ドムス設計事務所 | Sound insulation board |
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