JPS6424401U - - Google Patents
Info
- Publication number
- JPS6424401U JPS6424401U JP11841387U JP11841387U JPS6424401U JP S6424401 U JPS6424401 U JP S6424401U JP 11841387 U JP11841387 U JP 11841387U JP 11841387 U JP11841387 U JP 11841387U JP S6424401 U JPS6424401 U JP S6424401U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- input terminal
- reference voltage
- supplying
- output control
- 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
- 230000007257 malfunction Effects 0.000 claims 2
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Safety Devices In Control Systems (AREA)
Description
第１図は本考案に係るプログラマブルコントロ
ーラの出力部のブロツク構成を示す図であり、第
２図は第１図における電圧降下検出回路４の具体
的回路構成を示す図である。第３図は従来のプロ
グラマブルコントローラの電源のオンオフ動作の
概略を示す図であり、第４図は、従来のプログラ
マブルコントローラとその制御対象を示す図であ
る。
ＩＮ：入力端、ＯＵＴ：出力端、７：ツエナー
ダイオード、８：コンパレータ、９，１０：トラ
ンジスタ。
FIG. 1 is a diagram showing a block configuration of an output section of a programmable controller according to the present invention, and FIG. 2 is a diagram showing a specific circuit configuration of the voltage drop detection circuit 4 in FIG. 1. FIG. 3 is a diagram showing an outline of the power on/off operation of a conventional programmable controller, and FIG. 4 is a diagram showing a conventional programmable controller and its controlled objects. IN: input terminal, OUT: output terminal, 7: Zener diode, 8: comparator, 9, 10: transistor.
Claims (1)
力端と、この電源入力端に所定電位の電圧が供給
されることにより一定の基準電位の電圧を発生す
る基準電圧源と、上記入力端に入力された電圧と
上記基準電圧源の基準電圧とを比較する比較手段
と、上記入力端に供給された電圧を制御対象位置
に供給するための出力制御手段とを備え 上記比較手段の比較結果に基づき、上記出力制
御手段を開閉制御することにより制御対象装置の
誤動作を防止する様にしたことを特徴とする電子
機器における誤動作防止装置。[Claims for Utility Model Registration] A power input terminal that receives a voltage at a predetermined potential from a power supply source, and a reference voltage source that generates a voltage at a constant reference potential by supplying the voltage at a predetermined potential to this power input terminal. and a comparison means for comparing the voltage input to the input terminal with a reference voltage of the reference voltage source, and an output control means for supplying the voltage supplied to the input terminal to the control target position. A malfunction prevention device for an electronic device, characterized in that malfunction of a device to be controlled is prevented by controlling opening and closing of the output control means based on a comparison result of the comparison means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11841387U JPS6424401U (en) | 1987-07-30 | 1987-07-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11841387U JPS6424401U (en) | 1987-07-30 | 1987-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6424401U true JPS6424401U (en) | 1989-02-09 |
Family
ID=31362751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11841387U Pending JPS6424401U (en) | 1987-07-30 | 1987-07-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6424401U (en) |
-
1987
- 1987-07-30 JP JP11841387U patent/JPS6424401U/ja active Pending
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