JPH0172732U - - Google Patents
Info
- Publication number
- JPH0172732U JPH0172732U JP1987166147U JP16614787U JPH0172732U JP H0172732 U JPH0172732 U JP H0172732U JP 1987166147 U JP1987166147 U JP 1987166147U JP 16614787 U JP16614787 U JP 16614787U JP H0172732 U JPH0172732 U JP H0172732U
- Authority
- JP
- Japan
- Prior art keywords
- photo
- couplers
- photo coupler
- coupler
- emitters
- 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 1
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案のフオトカプラーを使用した入
力回路の一実施例の回路図である。
１〜４……スイツチ、５〜８……フオトカプラ
ー、９……抵抗、１０……デコーダ。
FIG. 1 is a circuit diagram of an embodiment of an input circuit using the photocoupler of the present invention. 1-4...Switch, 5-8...Photocoupler, 9...Resistor, 10...Decoder.
Claims (1)
カプラーのエミツタに共通に接続されたプルダウ
ン用抵抗と、各フオトカプラーのコレクタに出力
が接続され、アクテイブハイレベルのデコーダと
を有するフオトカプラーを使用した入力回路。 An input circuit using a photo coupler having a plurality of photo couplers, a pull-down resistor commonly connected to the emitters of the plural photo couplers, and an active high level decoder whose output is connected to the collector of each photo coupler. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987166147U JPH0172732U (en) | 1987-10-31 | 1987-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987166147U JPH0172732U (en) | 1987-10-31 | 1987-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0172732U true JPH0172732U (en) | 1989-05-16 |
Family
ID=31453273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987166147U Pending JPH0172732U (en) | 1987-10-31 | 1987-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0172732U (en) |
-
1987
- 1987-10-31 JP JP1987166147U patent/JPH0172732U/ja active Pending