JPS586444U - Input/output isolated DC signal transmission circuit - Google Patents
Input/output isolated DC signal transmission circuitInfo
- Publication number
- JPS586444U JPS586444U JP9927181U JP9927181U JPS586444U JP S586444 U JPS586444 U JP S586444U JP 9927181 U JP9927181 U JP 9927181U JP 9927181 U JP9927181 U JP 9927181U JP S586444 U JPS586444 U JP S586444U
- Authority
- JP
- Japan
- Prior art keywords
- input
- signal transmission
- transmission circuit
- output
- output 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
- Electronic Switches (AREA)
- Networks Using Active Elements (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Dc Digital Transmission (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、第一３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、第５図及び第６図はこの考案の
それぞれ異なる実施例を表わす電気回路図、第７図は電
流制限回路の一例を表わす電気回路図である。
１２は入力端子、１５，６０．６１は出力端子、′１４
は電源、４０．４１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である。Figures 1 and 2 are electrical circuit diagrams of conventional circuits, Figure 13 is a configuration diagram showing an example of a device using an input/output isolated DC signal transmission circuit, and Figures 4, 5, and 6. 7 is an electric circuit diagram showing different embodiments of this invention, and FIG. 7 is an electric circuit diagram showing an example of a current limiting circuit. 12 is the input terminal, 15, 60.61 is the output terminal, '14
40.41 is a photocoupler, 42.degree. 43 is a light emitting diode, and 44.45 is a phototransistor.
Claims (1)
受光素子を出力端子に接続して入出力端子間を電気的に
絶縁した入出力絶縁形直流信号伝送回路において、前記
発光ダイオードに並列接続される逆電保護用ダイオード
として、前記受光素子又は前記フォトカプラとは別のフ
ォトカプラの受光素子と光学的に結合された別の発光ダ
イオードを使用したことを特徴とする入出力絶縁形直流
信号伝送回路。In an input/output isolated DC signal transmission circuit in which a light emitting diode of a photocoupler is connected to an input terminal and its light receiving element is connected to an output terminal to electrically insulate between the input and output terminals, a reverse polarizer connected in parallel to the light emitting diode is used. An input/output isolated DC signal transmission circuit characterized in that, as a power protection diode, another light emitting diode optically coupled to the light receiving element or the light receiving element of a photocoupler other than the photocoupler is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9927181U JPS586444U (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 |
|---|---|---|---|
| JP9927181U JPS586444U (en) | 1981-07-03 | 1981-07-03 | Input/output isolated DC signal transmission circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS586444U true JPS586444U (en) | 1983-01-17 |
Family
ID=29894012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9927181U Pending JPS586444U (en) | 1981-07-03 | 1981-07-03 | Input/output isolated DC signal transmission circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS586444U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS537128B2 (en) * | 1972-08-10 | 1978-03-15 | ||
| JPS5341166A (en) * | 1976-09-28 | 1978-04-14 | Nec Corp | Switch circuit using optical combination |
-
1981
- 1981-07-03 JP JP9927181U patent/JPS586444U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS537128B2 (en) * | 1972-08-10 | 1978-03-15 | ||
| JPS5341166A (en) * | 1976-09-28 | 1978-04-14 | Nec Corp | Switch circuit using optical combination |
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