JPS58107644U - Light interruption detection circuit - Google Patents
Light interruption detection circuitInfo
- Publication number
- JPS58107644U JPS58107644U JP1982004802U JP480282U JPS58107644U JP S58107644 U JPS58107644 U JP S58107644U JP 1982004802 U JP1982004802 U JP 1982004802U JP 480282 U JP480282 U JP 480282U JP S58107644 U JPS58107644 U JP S58107644U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- interruption detection
- circuit
- light interruption
- optical 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
Landscapes
- Dc Digital Transmission (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Optical Communication System (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の先駈検出回路の回路構成図、第２図はこ
の考案の一実施例による先駈検出回路のブロック図、第
３図はこの考案の具体的な回路構成図、第４図は直流信
号の場合の各部の電圧波形を示す図、第５図は低周波信
号の場合の各部の電圧波形を示す図、第、６図は高周波
信号の場合の各部の電圧波形を示す図である。
図において、１は受光素子、２． ５． ９． １１゜
１２．１４．１５，２１．２３は抵抗、３は増幅器、４
．１３．２２はコンデンサ、６．２４は可変抵抗、７，
１６は比較器、８，２５はダイオード、１０はトランジ
スタ、１７は直流増幅器、１８は微分回路、１９．２０
は積分回路である。。
なお、図中同一あるいは相当部分には同一符号を付して
示しである。
′＃−２箇Figure 1 is a circuit diagram of a conventional canter detection circuit, Figure 2 is a block diagram of a canter detection circuit according to an embodiment of this invention, Figure 3 is a specific circuit diagram of this invention, and Figure 4 is a block diagram of a conventional canter detection circuit. Figure 5 shows the voltage waveform of each part in the case of a DC signal, Figure 5 shows the voltage waveform of each part in the case of a low frequency signal, and Figures 6 and 6 show the voltage waveform of each part in the case of a high frequency signal. It is. In the figure, 1 is a light receiving element, 2. 5. 9. 11゜12.14.15, 21.23 are resistors, 3 is an amplifier, 4
．． 13.22 is a capacitor, 6.24 is a variable resistor, 7,
16 is a comparator, 8 and 25 are diodes, 10 is a transistor, 17 is a DC amplifier, 18 is a differential circuit, 19.20
is an integrating circuit. . Note that the same or equivalent parts in the figures are indicated by the same reference numerals. '#-2 pieces
Claims (1)
ため、増幅度のほぼ等しい交流増幅器と直流増幅器を並
列に配置し、かつ前記交流増幅器の出力端に微分回路を
、また直流増幅器の出力端には積分回路を接続し、さら
に上記微分回路と上記積分回路−の出力電圧を比較する
比較器を設けて直流から高周波までの光信号断を検出す
るように構成したことを特徴とする先駈検出回路。In the full detection path for detecting optical signal disconnection, in order to detect the An integrating circuit is connected to the output end, and a comparator is further provided to compare the output voltages of the differentiating circuit and the integrating circuit, so as to detect optical signal interruption from direct current to high frequency. Canter detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982004802U JPS58107644U (en) | 1982-01-18 | 1982-01-18 | Light interruption detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982004802U JPS58107644U (en) | 1982-01-18 | 1982-01-18 | Light interruption detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58107644U true JPS58107644U (en) | 1983-07-22 |
Family
ID=30017632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982004802U Pending JPS58107644U (en) | 1982-01-18 | 1982-01-18 | Light interruption detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58107644U (en) |
-
1982
- 1982-01-18 JP JP1982004802U patent/JPS58107644U/en active Pending
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