KR200149019Y1 - 엘이디구동회로 - Google Patents
엘이디구동회로 Download PDFInfo
- Publication number
- KR200149019Y1 KR200149019Y1 KR2019950007835U KR19950007835U KR200149019Y1 KR 200149019 Y1 KR200149019 Y1 KR 200149019Y1 KR 2019950007835 U KR2019950007835 U KR 2019950007835U KR 19950007835 U KR19950007835 U KR 19950007835U KR 200149019 Y1 KR200149019 Y1 KR 200149019Y1
- Authority
- KR
- South Korea
- Prior art keywords
- led
- led1
- led2
- driving circuit
- led driving
- Prior art date
Links
- 230000000052 comparative effect Effects 0.000 claims abstract description 12
- 230000003321 amplification Effects 0.000 abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005036 potential barrier Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
- G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
- G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
- G09G3/14—Semiconductor devices, e.g. diodes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Led Devices (AREA)
Abstract
Description
Claims (2)
- 입력신호에 따라 서로 다른 두 개의 LED(LED1,LED2)을 교호적으로 발광시키는 LED구동회로에 있어서, 일 입력단자(IN)에 가해지는 상기 입력신호의 레벨을 판별하여, (+)전압 또는 (-)전압을 선택적으로 출력하는 비교증폭수단(OP-AMP)과; 상기 비교증폭수단(OP-AMP)의 출력단자에 상기 일 LED(LED1)는 순바이어스로 연결되고, 상기 다른 LED(LED2)는 역바이어스로 연결되어, 상기 비교증폭수단(OP-AMP)으로부터 출력된 전압의 극성에 따라서 전류가 소정 LED(LED1 또는 LED2)로만 선택적으로 인가되게 하는 LED구동제어수단(10)을 포함하는 것을 특징으로 하는 LED구동회로.
- 입력신호에 따라 서로 다른 두 개의 LED(LED1,LED2)를 교호적으로 발광시키는 LED구동회로에 있어서, 일 입력단자(IN)에 가해지는 상기 입력신호의 레벨을 판별하여, 선택적으로 도통되는 트랜지스터(TR1)를 포함하며; 상기 일 LED(LED1)는 상기 트랜지스터(TR1)에 순바이어스로 연결되고, 상기 다른 LED(LED2)는 전원(V+)에 순바이어스로 연결되어, 상기 트랜지스터(TR1)가 도통될 때(ON)는 상기 일 LED(LED1)에만 전류가 인가되고, 상기 트랜지스터(TR1)가 도통되지 않을 때 (OFF)에는 상기 다른 LED(LED2)에만 전류가 인가되도록 구성되어 있는 것을 특징으로 하는 LED구동회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019950007835U KR200149019Y1 (ko) | 1995-04-18 | 1995-04-18 | 엘이디구동회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019950007835U KR200149019Y1 (ko) | 1995-04-18 | 1995-04-18 | 엘이디구동회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960035459U KR960035459U (ko) | 1996-11-21 |
KR200149019Y1 true KR200149019Y1 (ko) | 1999-06-15 |
Family
ID=19411522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019950007835U KR200149019Y1 (ko) | 1995-04-18 | 1995-04-18 | 엘이디구동회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR200149019Y1 (ko) |
-
1995
- 1995-04-18 KR KR2019950007835U patent/KR200149019Y1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR960035459U (ko) | 1996-11-21 |
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Comment text: Application for Utility Model Registration Patent event code: UA01011R08D Patent event date: 19950418 |
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