JPH02145401U - - Google Patents
Info
- Publication number
- JPH02145401U JPH02145401U JP5286289U JP5286289U JPH02145401U JP H02145401 U JPH02145401 U JP H02145401U JP 5286289 U JP5286289 U JP 5286289U JP 5286289 U JP5286289 U JP 5286289U JP H02145401 U JPH02145401 U JP H02145401U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- control unit
- input
- zener diode
- switches
- 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 3
- 239000003112 inhibitor Substances 0.000 description 1
Landscapes
- Safety Devices In Control Systems (AREA)
Description
第１図は本考案の実施例を示す電気回路図であ
る。また、第２図及び第３図は従来例を示し、第
２図は複数スイツチ情報を多重化して入力する場
合の電気回路図、第３図はスイツチ情報毎に入力
する場合の電気回路図である。
１…インヒビタスイツチ回路、３…コントロー
ルユニツト、５…入力回路、ＺＤ…ツエナーダイ
オード、Ｒ１，Ｒ２，Ｒ３，Ｒ４，Ｒ５…抵抗、
Ｅ…アース端子、ＩＧ…電源。
FIG. 1 is an electrical circuit diagram showing an embodiment of the present invention. In addition, Fig. 2 and Fig. 3 show conventional examples, Fig. 2 is an electric circuit diagram when multiplexing multiple switch information and inputting it, and Fig. 3 is an electric circuit diagram when inputting switch information individually. be. DESCRIPTION OF SYMBOLS 1... Inhibitor switch circuit, 3... Control unit, 5... Input circuit, ZD... Zener diode, R1 , R2 , R3 , R4 , R5 ... Resistor,
E...Earth terminal, IG...Power supply.
Claims (1)
コントロールユニツトに入力するようにした複数
スイツチ情報の入力回路であつて、上記各スイツ
チには抵抗とツエナーダイオードとが並列に接続
され、該各スイツチの抵抗は他のスイツチの抵抗
と直列に接続された状態で上記コントロールユニ
ツトに入力されると共に、上記各スイツチのツエ
ナーダイオードのアース側は上記コントロールユ
ニツトのアース端子と共通に接続されていること
を特徴とする複数スイツチ情報の入力回路。 A multi-switch information input circuit that has a plurality of switches and inputs the state of each switch to a control unit, in which a resistor and a Zener diode are connected in parallel to each switch, and the state of each switch is input to a control unit. The resistance of each switch is connected in series with the resistance of other switches and input to the control unit, and the ground side of the Zener diode of each switch is commonly connected to the ground terminal of the control unit. Features an input circuit for multiple switch information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5286289U JPH02145401U (en) | 1989-05-08 | 1989-05-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5286289U JPH02145401U (en) | 1989-05-08 | 1989-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02145401U true JPH02145401U (en) | 1990-12-10 |
Family
ID=31573536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5286289U Pending JPH02145401U (en) | 1989-05-08 | 1989-05-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02145401U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51129589A (en) * | 1975-05-02 | 1976-11-11 | Toshiba Corp | A control apparatus |
| JPS5851318A (en) * | 1981-09-22 | 1983-03-26 | Matsushita Electric Works Ltd | Controller |
| JPS60126703A (en) * | 1984-10-11 | 1985-07-06 | Yokogawa Hokushin Electric Corp | Digital type numerical value setting device |
-
1989
- 1989-05-08 JP JP5286289U patent/JPH02145401U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51129589A (en) * | 1975-05-02 | 1976-11-11 | Toshiba Corp | A control apparatus |
| JPS5851318A (en) * | 1981-09-22 | 1983-03-26 | Matsushita Electric Works Ltd | Controller |
| JPS60126703A (en) * | 1984-10-11 | 1985-07-06 | Yokogawa Hokushin Electric Corp | Digital type numerical value setting device |