JPS62135981U - - Google Patents
Info
- Publication number
- JPS62135981U JPS62135981U JP2285186U JP2285186U JPS62135981U JP S62135981 U JPS62135981 U JP S62135981U JP 2285186 U JP2285186 U JP 2285186U JP 2285186 U JP2285186 U JP 2285186U JP S62135981 U JPS62135981 U JP S62135981U
- Authority
- JP
- Japan
- Prior art keywords
- reference voltage
- determination
- light
- receiving element
- voltage
- 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 4
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Geophysics And Detection Of Objects (AREA)
Description
第１図は本考案の実施例を示す光感知器の回路
図、第２図は従来例を示す光感知器の回路図、第
３図は光感知器の動作タイムチヤート、第４図は
本考案の各基準電圧と発光ダイオードの点灯条件
との関係を示す図である。
１……可変抵抗器、２……発光ダイオード、３
……ホトトランジスタ、８，１１，１２……電圧
比較器、１５，１６……表示用発光ダイオード、
Ｍ……検出物体。
Fig. 1 is a circuit diagram of a photodetector showing an embodiment of the present invention, Fig. 2 is a circuit diagram of a photosensor showing a conventional example, Fig. 3 is an operation time chart of the photodetector, and Fig. 4 is a photodetector circuit diagram of a conventional example. FIG. 3 is a diagram showing the relationship between each reference voltage of the invention and lighting conditions of a light emitting diode. 1... Variable resistor, 2... Light emitting diode, 3
... Phototransistor, 8, 11, 12 ... Voltage comparator, 15, 16 ... Light emitting diode for display,
M...Detected object.
Claims (1)
子と、基準電圧を発生する基準電圧発生回路と、
前記受光素子の出力電圧と前記基準電圧とを比較
する電圧比較器と、前記発光素子への電流を調整
する電流調整回路を具備する光感知器において、
判定用基準電圧を発生する判定用基準電圧発生回
路と、該判定用基準電圧と前記受光素子の出力を
比較して、比較結果を表示する比較表示回路を設
けたことを特徴とする光感知器。 (2) 前記比較表示回路は互いに異なる２つの判
定用基準電圧と前記受光素子の出力電圧とを各々
比較して表示することを特徴とする実用新案登録
請求の範囲第１項記載の光感知器。 (3) 互いに異なる２つの判定用基準電圧は３つ
の抵抗を直列接続した抵抗分圧器の分圧電圧であ
ることを特徴とする実用新案登録請求の範囲第２
項記載の光感知器。 (4) 前記比較表示回路は比較結果を表示する発
光ダイオードを有することを特徴とする実用新案
登録請求の範囲第１項、第２項又は第３項記載の
光感知器。[Claims for Utility Model Registration] (1) A light emitting element, a light receiving element corresponding to the light emitting element, and a reference voltage generation circuit that generates a reference voltage;
A photosensor comprising a voltage comparator that compares the output voltage of the light-receiving element with the reference voltage, and a current adjustment circuit that adjusts the current flowing to the light-emitting element,
A photosensor comprising: a determination reference voltage generation circuit that generates a determination reference voltage; and a comparison display circuit that compares the determination reference voltage with the output of the light receiving element and displays the comparison result. . (2) The photodetector according to claim 1, wherein the comparison display circuit compares and displays two different reference voltages for determination and the output voltage of the light receiving element, respectively. . (3) Utility model registration claim 2, characterized in that the two different reference voltages for determination are divided voltages of a resistive voltage divider in which three resistors are connected in series.
Photosensor as described in section. (4) The photodetector according to claim 1, 2, or 3, wherein the comparison display circuit includes a light emitting diode for displaying the comparison result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2285186U JPS62135981U (en) | 1986-02-21 | 1986-02-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2285186U JPS62135981U (en) | 1986-02-21 | 1986-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62135981U true JPS62135981U (en) | 1987-08-27 |
Family
ID=30820625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2285186U Pending JPS62135981U (en) | 1986-02-21 | 1986-02-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62135981U (en) |
-
1986
- 1986-02-21 JP JP2285186U patent/JPS62135981U/ja active Pending
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