JPH02147951U - - Google Patents
Info
- Publication number
- JPH02147951U JPH02147951U JP5782689U JP5782689U JPH02147951U JP H02147951 U JPH02147951 U JP H02147951U JP 5782689 U JP5782689 U JP 5782689U JP 5782689 U JP5782689 U JP 5782689U JP H02147951 U JPH02147951 U JP H02147951U
- Authority
- JP
- Japan
- Prior art keywords
- photocoupler
- output interface
- power supply
- interface circuit
- supply 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 2
Landscapes
- Electronic Switches (AREA)
- Dc Digital Transmission (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
従来の出力インタフエース回路図である。
１……ラツチ素子、２……ドライブバツフア素
子、３……フオトカプラ、４……電源制御手段。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a conventional output interface circuit diagram. DESCRIPTION OF SYMBOLS 1... Latch element, 2... Drive buffer element, 3... Photo coupler, 4... Power supply control means.
Claims (1)
有するフオトカプラ出力インタフエース回路にお
いて、前記フオトカプラ出力インタフエース回路
用電源電圧の電圧変動を検出し前記フオトカプラ
出力インタフエース回路の電源電圧が定められた
値まで低下したとき、前記フオトカプラに供給し
ている電源電流を制御してオフとする電源制御手
段を備えたことを特徴とするフオトカプラ出力イ
ンタフエース回路。 In a photocoupler output interface circuit having a photocoupler as an output interface element, when a voltage fluctuation of the power supply voltage for the photocoupler output interface circuit is detected and the power supply voltage of the photocoupler output interface circuit drops to a predetermined value, the A photocoupler output interface circuit comprising a power supply control means for controlling and turning off the power supply current supplied to the photocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5782689U JPH02147951U (en) | 1989-05-18 | 1989-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5782689U JPH02147951U (en) | 1989-05-18 | 1989-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02147951U true JPH02147951U (en) | 1990-12-17 |
Family
ID=31582886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5782689U Pending JPH02147951U (en) | 1989-05-18 | 1989-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02147951U (en) |
-
1989
- 1989-05-18 JP JP5782689U patent/JPH02147951U/ja active Pending