JPH02123027U - - Google Patents
Info
- Publication number
- JPH02123027U JPH02123027U JP3088989U JP3088989U JPH02123027U JP H02123027 U JPH02123027 U JP H02123027U JP 3088989 U JP3088989 U JP 3088989U JP 3088989 U JP3088989 U JP 3088989U JP H02123027 U JPH02123027 U JP H02123027U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- voltage
- converter
- constant current
- input
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Keying Circuit Devices (AREA)
Description
第１図は本考案による電圧検知式スイツチ装置
の一実施例を示す回路図、第２図は本考案の他の
実施例を示す回路図、第３図は従来例を示す回路
図である。
１……定電流源、２……Ａ／Ｄコンバータ、Ｓ
１，Ｓ２，Ｓ３……スイツチ、Ｒ１，Ｒ２，Ｒ３
，Ｒ４，Ｒ１１，Ｒ１２，Ｒ１３……抵抗。
FIG. 1 is a circuit diagram showing one embodiment of a voltage detection type switch device according to the present invention, FIG. 2 is a circuit diagram showing another embodiment of the present invention, and FIG. 3 is a circuit diagram showing a conventional example. 1... Constant current source, 2... A/D converter, S
1, S2, S3...Switch, R1, R2, R3
, R4, R11, R12, R13...resistance.
Claims (1)
スイツチの該定位置を判別する電圧検知式スイツ
チ装置において、常に一定の電流を供給する定電
流源と、複数のスイツチと、抵抗値の異なる複数
の抵抗と、入力電圧をスイツチ設定位置のデジタ
ル信号に変換して出力するＡ／Ｄコンバータとを
具備し、スイツチの開閉に対応して通電される抵
抗値が変化するように前記スイツチ及び前記抵抗
を配列し、一定電流の通電によつて変化する電圧
を前記Ａ／Ｄコンバータに入力してスイツチの設
定位置を判別するように構成したことを特徴とす
る電圧検知式スイツチ装置。 In a voltage detection switch device that detects the voltage input to an A/D converter and determines the fixed position of the switch, there is a constant current source that always supplies a constant current, a plurality of switches, and a plurality of switches with different resistance values. and an A/D converter that converts the input voltage into a digital signal of the switch setting position and outputs the digital signal, and the switch and the resistor are connected so that the resistance value to which the switch is energized changes in response to opening and closing of the switch. 1. A voltage detection type switch device, characterized in that it is configured to input a voltage that changes with the application of a constant current to the A/D converter to determine the set position of the switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3088989U JPH02123027U (en) | 1989-03-20 | 1989-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3088989U JPH02123027U (en) | 1989-03-20 | 1989-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02123027U true JPH02123027U (en) | 1990-10-09 |
Family
ID=31256336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3088989U Pending JPH02123027U (en) | 1989-03-20 | 1989-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02123027U (en) |
-
1989
- 1989-03-20 JP JP3088989U patent/JPH02123027U/ja active Pending
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