JPS586443U - Input/output isolated DC signal transmission circuit - Google Patents
Input/output isolated DC signal transmission circuitInfo
- Publication number
- JPS586443U JPS586443U JP9927081U JP9927081U JPS586443U JP S586443 U JPS586443 U JP S586443U JP 9927081 U JP9927081 U JP 9927081U JP 9927081 U JP9927081 U JP 9927081U JP S586443 U JPS586443 U JP S586443U
- Authority
- JP
- Japan
- Prior art keywords
- input
- signal transmission
- transmission circuit
- light
- isolated
- 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
- Detection And Prevention Of Errors In Transmission (AREA)
- Dc Digital Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Electronic Switches (AREA)
- Networks Using Active Elements (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図及び第２図は従来回路の電気回路図、第３図は入
出力絶縁形直流信号伝送回路を使用した装置の一例を表
わす構成図、第４図は本考案の実施例を表わす電気回路
図である。
′ １２は入力端子、１４は電源、１５は出力端子、４
０．４１はフォトカプラ、４２．４３は発光ダイオード
、４４．４５はフォトトランジスタ、４６．４７はダイ
オードである。Figures 1 and 2 are electrical circuit diagrams of conventional circuits, Figure 3 is a block diagram showing an example of a device using an input/output isolated DC signal transmission circuit, and Figure 4 is an electrical diagram showing an embodiment of the present invention. It is a circuit diagram. '12 is the input terminal, 14 is the power supply, 15 is the output terminal, 4
0.41 is a photocoupler, 42.43 is a light emitting diode, 44.45 is a phototransistor, and 46.47 is a diode.
Claims (1)
絶縁した入力絶縁形直流信号伝送回路において、２個の
フォトカプラの発光ダイオードを互いに逆極性で直列接
続したものを前記入力端子に接続するとともに各々の発
光ダイオードにダイオードをその発光ダイオードと逆の
極性で並列に接続し、且つ前記２個のフォトカプラの受
光素子を同極性で並列接続して導電性を加算し、これに
抵抗を介して電圧を加えることにより受光素子の導電性
の変化による電気的出力を前記出力端子から取出す構成
としたことわ特徴とする入出力絶縁形直流信号伝送回路
。In an input isolated DC signal transmission circuit in which an input terminal and an output terminal are electrically isolated using a photocoupler, light emitting diodes of two photocouplers connected in series with mutually opposite polarities are connected to the input terminal. At the same time, a diode is connected in parallel to each light emitting diode with the opposite polarity to that light emitting diode, and the light receiving elements of the two photocouplers are connected in parallel with the same polarity to add conductivity, and to this, through a resistor. 1. An input/output isolated DC signal transmission circuit characterized in that an electrical output due to a change in conductivity of a light-receiving element is extracted from the output terminal by applying a voltage to the light-receiving element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9927081U JPS586443U (en) | 1981-07-03 | 1981-07-03 | Input/output isolated DC signal transmission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9927081U JPS586443U (en) | 1981-07-03 | 1981-07-03 | Input/output isolated DC signal transmission circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS586443U true JPS586443U (en) | 1983-01-17 |
Family
ID=29894011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9927081U Pending JPS586443U (en) | 1981-07-03 | 1981-07-03 | Input/output isolated DC signal transmission circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS586443U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61152459A (en) * | 1984-12-26 | 1986-07-11 | Matsushita Electric Ind Co Ltd | Printing head driving circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5275164A (en) * | 1975-12-18 | 1977-06-23 | Toshiba Corp | Level converter |
-
1981
- 1981-07-03 JP JP9927081U patent/JPS586443U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5275164A (en) * | 1975-12-18 | 1977-06-23 | Toshiba Corp | Level converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61152459A (en) * | 1984-12-26 | 1986-07-11 | Matsushita Electric Ind Co Ltd | Printing head driving circuit |
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