JPS6477183A - Circuit for driving light emitting diode - Google Patents

Circuit for driving light emitting diode

Info

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
Application number
JP23380687A
Other languages
Japanese (ja)
Inventor
Toru Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP23380687A priority Critical patent/JPS6477183A/en
Publication of JPS6477183A publication Critical patent/JPS6477183A/en
Pending legal-status Critical Current

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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.
JP23380687A 1987-09-18 1987-09-18 Circuit for driving light emitting diode Pending JPS6477183A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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