JPH031455U - - Google Patents
Info
- Publication number
- JPH031455U JPH031455U JP5950689U JP5950689U JPH031455U JP H031455 U JPH031455 U JP H031455U JP 5950689 U JP5950689 U JP 5950689U JP 5950689 U JP5950689 U JP 5950689U JP H031455 U JPH031455 U JP H031455U
- Authority
- JP
- Japan
- Prior art keywords
- led
- photocoupler
- built
- drive current
- resistor
- 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 2
Description
第１図は本考案の一実施例の抵抗内蔵型フオト
カプラの回路図、第２図は従来のフオトカプラの
一例の回路図である。
１，８……電源端子、２，３，４……入力抵抗
Ｒ１〜Ｒ３、５，９……ＴＴＬ、６……ＬＥＤ、
７……トランジスタ、１０……負荷抵抗ＲＬ。
FIG. 1 is a circuit diagram of a photocoupler with a built-in resistor according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of an example of a conventional photocoupler. 1, 8...Power terminal, 2,3,4...Input resistance R1 to R3 , 5,9...TTL, 6...LED,
7...Transistor, 10...Load resistance RL.
Claims (1)
タとを内蔵したフオトカプラにおいて、前記パツ
ケージ内に、使用電源電圧に対応して各抵抗値が
予め設定され前記ＬＥＤの駆動電流を制限するＬ
ＥＤ駆動電流制限用抵抗を内蔵したことを特徴と
する抵抗内蔵型フオトカプラ。 In a photocoupler that incorporates an LED and a phototransistor in the same package, the package includes an L whose resistance value is set in advance in accordance with the power supply voltage used, and which limits the drive current of the LED.
A resistor built-in photocoupler characterized by having a built-in resistor for limiting the ED drive current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5950689U JPH031455U (en) | 1989-05-22 | 1989-05-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5950689U JPH031455U (en) | 1989-05-22 | 1989-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031455U true JPH031455U (en) | 1991-01-09 |
Family
ID=31586060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5950689U Pending JPH031455U (en) | 1989-05-22 | 1989-05-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031455U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9425350B2 (en) | 2013-09-11 | 2016-08-23 | Kabushiki Kaisha Toshiba | Photocoupler and light emitting element |
-
1989
- 1989-05-22 JP JP5950689U patent/JPH031455U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9425350B2 (en) | 2013-09-11 | 2016-08-23 | Kabushiki Kaisha Toshiba | Photocoupler and light emitting element |