JPS6477183A - Circuit for driving light emitting diode - Google Patents
Circuit for driving light emitting diodeInfo
- Publication number
- JPS6477183A JPS6477183A JP23380687A JP23380687A JPS6477183A JP S6477183 A JPS6477183 A JP S6477183A JP 23380687 A JP23380687 A JP 23380687A JP 23380687 A JP23380687 A JP 23380687A JP S6477183 A JPS6477183 A JP S6477183A
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- emitting diode
- turn
- outputs
- phase
- 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
Landscapes
- Led Devices (AREA)
Abstract
PURPOSE:To control directly turn on and turn-off of a light emitting diode by emitter-coupled logic (ECL) outputs, by employing a circuit structure in which output emitter-follower transistors of the ECL are used in common and caused to perform switching operation to turn on or turn off the light emitting diode utilizing both the in-phase and negative-phase outputs thereof. CONSTITUTION:The in-phase and negative-phase outputs of a conventional ECL are respectively connected to terminals OT and OC. And, the OT and OC outputs are connected to the inputs of a light emitting diode and a conventional rectifier diode, respectively, respective of which cathodes are connected in common and the interconnection therebetween is connected to a power source VEE through a resistor R3. Now, when an input VI is of high level, an output VOH of high level is developed across the output OT and the earth so that the light emitting diode LED is turned on. Next, when the input VI is of low level, a bias current, which is corresponding to the current during the light emitting diode LED being turned on, is caused to flow through the rectifier diode D. On the other hand, only current of the order of leakage current is caused to flow through the light emitting diode LED so that the diode LED is turned off and is not lighted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23380687A JPS6477183A (en) | 1987-09-18 | 1987-09-18 | Circuit for driving light emitting diode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23380687A JPS6477183A (en) | 1987-09-18 | 1987-09-18 | Circuit for driving light emitting diode |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6477183A true JPS6477183A (en) | 1989-03-23 |
Family
ID=16960875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23380687A Pending JPS6477183A (en) | 1987-09-18 | 1987-09-18 | Circuit for driving light emitting diode |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6477183A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5829483A (en) * | 1992-10-30 | 1998-11-03 | Toyoda Gosei Co., Ltd. | Hose |
CN104238442A (en) * | 2014-09-12 | 2014-12-24 | 江阴鼎天科技有限公司 | Sudden outage protection circuit of stepless-adjustment lay pitch tubular strander |
-
1987
- 1987-09-18 JP JP23380687A patent/JPS6477183A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5829483A (en) * | 1992-10-30 | 1998-11-03 | Toyoda Gosei Co., Ltd. | Hose |
CN104238442A (en) * | 2014-09-12 | 2014-12-24 | 江阴鼎天科技有限公司 | Sudden outage protection circuit of stepless-adjustment lay pitch tubular strander |
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