JPS6418532U - - Google Patents
Info
- Publication number
- JPS6418532U JPS6418532U JP11322687U JP11322687U JPS6418532U JP S6418532 U JPS6418532 U JP S6418532U JP 11322687 U JP11322687 U JP 11322687U JP 11322687 U JP11322687 U JP 11322687U JP S6418532 U JPS6418532 U JP S6418532U
- Authority
- JP
- Japan
- Prior art keywords
- resistance value
- input signal
- pulling
- circuit
- 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
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Keying Circuit Devices (AREA)
Description
第１図は本考案の第１の実施例を示す回路図で
ある。第２図は本考案の第２の実施例を示す回路
図である。第３図はスイツチ入力回路を示す回路
図である。第４図はリークを伴う場合の第３図の
回路の説明図である。第５図ａおよびｂはそれぞ
れプルアツプ抵抗の抵抗値を大、小に設定したと
きの動作説明に供する説明図である。
１：入力スイツチ、２，１２：入力回路部、１
２ａ，１２ｂ：プルアツプ抵抗、１２ｃ：ＩＣ、
１２ｅ：ワンシヨツトマルチバイブレータ、１２
ｇ：アナログスイツチ、Ｔｒ：トランジスタ。
FIG. 1 is a circuit diagram showing a first embodiment of the present invention. FIG. 2 is a circuit diagram showing a second embodiment of the present invention. FIG. 3 is a circuit diagram showing the switch input circuit. FIG. 4 is an explanatory diagram of the circuit of FIG. 3 in the case of leakage. FIGS. 5A and 5B are explanatory diagrams for explaining the operation when the resistance value of the pull-up resistor is set to be large and small, respectively. 1: Input switch, 2, 12: Input circuit section, 1
2a, 12b: Pull-up resistor, 12c: IC,
12e: One-shot multivibrator, 12
g: analog switch, Tr: transistor.
Claims (1)
後続の回路に入力するスイツチ入力回路において
、 前記入力信号を大きな抵抗値および小さな抵抗
値でそれぞれプルアツプ可能な抵抗手段と、 前記入力信号が所定レベルまで低下した後の所
定時間だけ前記小さな抵抗値で前記入力信号をプ
ルアツプし、それ以外では前記大きな抵抗値でプ
ルアツプする切換手段とを具備することを特徴と
するスイツチ入力回路。[Claims for Utility Model Registration] In a switch input circuit that inputs a signal according to the on/off state of an input switch to a subsequent circuit, a resistor means capable of pulling up the input signal with a large resistance value and a small resistance value, respectively. , switching means for pulling up the input signal with the small resistance value for a predetermined time after the input signal has decreased to a predetermined level, and pulling up the input signal with the large resistance value at other times. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11322687U JPS6418532U (en) | 1987-07-22 | 1987-07-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11322687U JPS6418532U (en) | 1987-07-22 | 1987-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6418532U true JPS6418532U (en) | 1989-01-30 |
Family
ID=31352873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11322687U Pending JPS6418532U (en) | 1987-07-22 | 1987-07-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6418532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019185873A (en) * | 2018-04-03 | 2019-10-24 | 三菱電機株式会社 | Electronic control device |
-
1987
- 1987-07-22 JP JP11322687U patent/JPS6418532U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019185873A (en) * | 2018-04-03 | 2019-10-24 | 三菱電機株式会社 | Electronic control device |
| US11018665B2 (en) | 2018-04-03 | 2021-05-25 | Mitsubishi Electric Corporation | Electronic control device |
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