KR0129996Y1 - 램프 밝기 제어회로 - Google Patents
램프 밝기 제어회로 Download PDFInfo
- Publication number
- KR0129996Y1 KR0129996Y1 KR2019910017920U KR910017920U KR0129996Y1 KR 0129996 Y1 KR0129996 Y1 KR 0129996Y1 KR 2019910017920 U KR2019910017920 U KR 2019910017920U KR 910017920 U KR910017920 U KR 910017920U KR 0129996 Y1 KR0129996 Y1 KR 0129996Y1
- Authority
- KR
- South Korea
- Prior art keywords
- lamp
- turned
- transistor
- microcomputer
- power
- 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.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009499 grossing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims (2)
- 전원스위치의 상태를 감지하는 마이콤과 표시부에 백라이팅조명을 구비한 전자기기에 있어서, 마이콤의 전원제어신호에 따라 스위칭되면서 전원온시 다수의 스위칭소자에 따라 병렬접속되고, 전원오프시 다수의 스위칭소자에 따라 직렬접속되어 램프의 밝기가 가변되도록 하는 연결상태 절환부를 포함하는 것을 특징으로 하는 램프 밝기 제어회로.
- 제1항에 있어서, 상기 연결상태 절환부(10)는 마이콤(1)에 접속된 저항(R3~R5)과, 마이콤(1)의 전원제어신호에 따라 온, 오프되어 전류의 흐름을 제어하는 스위칭용 트랜지스터(TR2)(TR3)(TR5)와, 트랜지스터(TR2)의 스위칭상태에 따라 온, 오프되는 트랜지스터(TR4) 및 그에 접속된 저항(R6)(R7)으로 구성하는 것을 특징으로 하는 램프 밝기 제어회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019910017920U KR0129996Y1 (ko) | 1991-10-25 | 1991-10-25 | 램프 밝기 제어회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019910017920U KR0129996Y1 (ko) | 1991-10-25 | 1991-10-25 | 램프 밝기 제어회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR930010067U KR930010067U (ko) | 1993-05-26 |
KR0129996Y1 true KR0129996Y1 (ko) | 1999-04-15 |
Family
ID=19321130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019910017920U Expired - Lifetime KR0129996Y1 (ko) | 1991-10-25 | 1991-10-25 | 램프 밝기 제어회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0129996Y1 (ko) |
-
1991
- 1991-10-25 KR KR2019910017920U patent/KR0129996Y1/ko not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR930010067U (ko) | 1993-05-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UA0108 | Application for utility model registration |
Comment text: Application for Utility Model Registration Patent event code: UA01011R08D Patent event date: 19911025 |
|
UG1501 | Laying open of application | ||
A201 | Request for examination | ||
UA0201 | Request for examination |
Patent event date: 19941025 Patent event code: UA02012R01D Comment text: Request for Examination of Application Patent event date: 19911025 Patent event code: UA02011R01I Comment text: Application for Utility Model Registration |
|
E902 | Notification of reason for refusal | ||
UE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event code: UE09021S01D Patent event date: 19980124 |
|
E701 | Decision to grant or registration of patent right | ||
UE0701 | Decision of registration |
Patent event date: 19980526 Comment text: Decision to Grant Registration Patent event code: UE07011S01D |
|
REGI | Registration of establishment | ||
UR0701 | Registration of establishment |
Patent event date: 19980826 Patent event code: UR07011E01D Comment text: Registration of Establishment |
|
UR1002 | Payment of registration fee |
Start annual number: 1 End annual number: 3 Payment date: 19980826 |
|
UG1601 | Publication of registration | ||
UR1001 | Payment of annual fee |
Payment date: 20010531 Start annual number: 4 End annual number: 4 |
|
UR1001 | Payment of annual fee |
Payment date: 20020726 Start annual number: 5 End annual number: 5 |
|
FPAY | Annual fee payment |
Payment date: 20030707 Year of fee payment: 6 |
|
UR1001 | Payment of annual fee |
Payment date: 20030707 Start annual number: 6 End annual number: 6 |
|
LAPS | Lapse due to unpaid annual fee |