JPH022675U - - Google Patents
Info
- Publication number
- JPH022675U JPH022675U JP7958988U JP7958988U JPH022675U JP H022675 U JPH022675 U JP H022675U JP 7958988 U JP7958988 U JP 7958988U JP 7958988 U JP7958988 U JP 7958988U JP H022675 U JPH022675 U JP H022675U
- Authority
- JP
- Japan
- Prior art keywords
- photocouplers
- grounded
- input
- level
- terminals
- 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 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案の一実施例の回路構成図、第２
図は本考案に接続される入力回路の一例の説明図
、第３図は出力レベルの変化を示すグラフである
。
１０：プラス電源、１１：プラス電源端子、１
２：マイナス電源、１３：マイナス電源端子、１
４：ＩＮ端子、１５，１８：フオトカプラ、１６
，１９：発光ダイオード、１７，２０：光電変換
素子、２１，２２：抵抗、ＰＣ１，ＰＣ２：出力
端子。
Figure 1 is a circuit configuration diagram of an embodiment of the present invention;
The figure is an explanatory diagram of an example of an input circuit connected to the present invention, and FIG. 3 is a graph showing changes in output level. 10: Positive power supply, 11: Positive power terminal, 1
2: Negative power supply, 13: Negative power supply terminal, 1
4: IN terminal, 15, 18: Photocoupler, 16
, 19: light emitting diode, 17, 20: photoelectric conversion element, 21, 22: resistor, PC 1 , PC 2 : output terminal.
Claims (1)
位の信号が入力する端子に、互いに逆方向の電流
により発光する発光素子を備えた２つのフオトカ
プラを接続して該両フオトカプラを接地するとと
もに、該両フオトカプラの光電変換素子に各別の
抵抗と出力端子を接続し、電源の中点を接地した
ことを特徴とする入力識別装置。 Two photocouplers equipped with light emitting elements that emit light by currents in opposite directions are connected to terminals into which signals of three types of potentials, high level, medium level, and low level, are input, and both photocouplers are grounded. An input identification device characterized in that respective resistors and output terminals are connected to the photoelectric conversion elements of both photocouplers, and the midpoint of the power supply is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7958988U JPH022675U (en) | 1988-06-16 | 1988-06-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7958988U JPH022675U (en) | 1988-06-16 | 1988-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH022675U true JPH022675U (en) | 1990-01-09 |
Family
ID=31304458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7958988U Pending JPH022675U (en) | 1988-06-16 | 1988-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH022675U (en) |
-
1988
- 1988-06-16 JP JP7958988U patent/JPH022675U/ja active Pending
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