CN2696271Y - Cold cathode fluorescent lamp light source supplied by urban network high-voltage power - Google Patents
Cold cathode fluorescent lamp light source supplied by urban network high-voltage power Download PDFInfo
- Publication number
- CN2696271Y CN2696271Y CN 200420049662 CN200420049662U CN2696271Y CN 2696271 Y CN2696271 Y CN 2696271Y CN 200420049662 CN200420049662 CN 200420049662 CN 200420049662 U CN200420049662 U CN 200420049662U CN 2696271 Y CN2696271 Y CN 2696271Y
- Authority
- CN
- China
- Prior art keywords
- inverter
- voltage
- circuit
- urban network
- cold
- 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 - Fee Related
Links
- 238000003079 width control Methods 0.000 claims 1
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Inverter Devices (AREA)
Abstract
The utility model discloses a cold cathode fluorescent lamp light source supplied by an urban network high-voltage power. The utility model is characterized in that the utility model comprises a rectifier (1) for directly commutating urban network high-voltage to direct current, a high-voltage direct / alternating inverter (2) for changing the output from the rectifier (1) into high-frequency alternating Current, and a booster transformer T for boosting the high-frequency alternating current volts outputted from the inverter (2), and the high frequency alternating current volts outputted from the booster transformer T is connected to a cold cathode fluorescence lamp. When the utility model is under the situation with larger power, a power factor correcting circuit (3) can be connected between the rectifier (1) and the high-voltage direct / alternating inverter (2). Because adopting a high-voltage direct / alternating inverter (2) to obtain high-frequency alternating current volts for lighting CCFL, the utility model doesn't need an inverter to change high voltage direct current to low voltage direct current; for a CCFL used in, such as a liquid crystal television, the cold cathode fluorescent lamp light source supplied by urban network high-voltage power simplifies power supply integral circuit composition, diminishes energy loss, and reduces cost.
Description
Technical field
The utility model relates to cold-cathode fluorescence lamp (CCFL) power supply, more specifically, relates to the cold-cathode fluorescence lamp power supply by the urban network high-voltage power.
Background technology
Because cold-cathode fluorescence lamp (CCFL) is used for mobile device the earliest, energy operate as normal during for the assurance powered battery, so the drive circuit of CCFL needs move under low-voltage DC supply, supply power voltage is generally less than 30V.In some application scenarios, for example in LCD TV, need not use powered battery, directly receive city's net, like this, the equipment that the CCFL lamp is housed must be furnished with a transducer (AC/DC converter) that exchanges low-voltage direct when being powered by AC network, just can make the inverter work of CCFL, being reverse into the high-frequency and high-voltage alternating current is used for lighting a lamp, the shortcoming of this pattern be energy conversion often, energy consumption is big, the circuit cost height.
Problem to be solved in the utility model is at above deficiency, and the CCFL power supply of a kind of city net ac high-voltage power supply is provided, and does not use the transducer that transforms to low-voltage direct, thereby has simplified the overall circuit formation, reduces energy consumption, reduces cost.
Summary of the invention
The technical solution of the utility model is: a kind of cold-cathode fluorescence lamp power supply of urban network high-voltage power, it is characterized in that: comprise that the high-frequency and high-voltage of being exported exchanges receives cold-cathode fluorescence lamp by city's net height straightening being connect the rectifier 1 that is rectified into direct current, the output of described rectifier 1 being reverse into the high straightening/friendship inverter 2 of high-frequency ac and the step-up transformer T that the high-frequency ac voltage of described inverter 2 outputs is raise.
In the bigger occasion of power, can also access power factor correcting circuit 3 between described rectifier 1 and inverter 2.
Scheme of the present utility model since adopt high voltage supply straight/hand over inverter to obtain the high-frequency and high-voltage of lighting a lamp for CCFL, do not need high voltage direct current is transformed to the converter of low-voltage direct, to such as the CCFL that is used in the LCD TV, having simplified its power supply overall circuit constitutes, reduce energy consumption, reduced cost.
Description of drawings
Fig. 1 is the circuit diagram of the utility model power supply first embodiment.
Fig. 2 is the circuit diagram of the utility model power supply second embodiment.
Fig. 3 is the circuit diagram of second embodiment with a plurality of CCFL the time.
Fig. 4 (a) and (b), (c) be the utility model power supply mesohigh straight/several circuit diagrams of AC-AC converter.
Embodiment
Fig. 1 is the circuit diagram of the utility model power supply first embodiment.City's net ac high-voltage input is by rectifying tube D
1D
4Form full-bridge rectifier 1, the high voltage direct current of its output is directly inputted to high straightening/friendship inverter 2, and described in this example high straightening/friendship inverter is by capacitor C
2, C
3And transistor Q
2, Q
3The high straightening of half-bridge/friendships inverter of forming, the input limit that step-up transformer T is received in the high-frequency ac output of inverter, its high-frequency and high-voltage exchanges output and supplies the CCFL usefulness of lighting a lamp.
It can be a kind of in push-pull circuit, half-bridge circuit or the full-bridge circuit that the circuit of described inverter 2 constitutes, and they are shown in Fig. 4 (a) and (b), (c) respectively, adopt half-bridge circuit in this example, corresponding to the situation of Fig. 4 (b) lining.Transistorized control in described inverter 2 inverter circuits can be adopted pulse width modulation (PWM) or FREQUENCY CONTROL.
This routine power supply is because the high voltage direct current of urban network electricity repoussage stream is a high-frequency ac by high straightening/friendship inverter inversion directly, being transformed to high-frequency and high-voltage by step-up transformer exchanges, the centre need not to reduce to inversion again behind the low-voltage direct, saves a high voltage direct current/low-voltage direct converter.The CCFL power supply of high voltage supply has been simplified formation, saves cost, cuts down the consumption of energy.
Fig. 2 is the circuit diagram of the utility model power supply second embodiment.This is in the bigger occasion of power, and the pulsating direct current of rectifier 1 output can become the example of Constant Direct Current through power factor correction (PFC) circuit conversion, and then receives high straightening/friendship inverter 2.Described pfc circuit is by the inductance L of series connection and diode D, at the transistor Q of its contact parallel connection
1, the three constitutes T shape circuit and in the capacitor C in parallel on the end that goes out of this T shape circuit
1Form, the PFC control circuit is bound up on described transistor Q
1On.
When the CCFL lamp that will light when being a plurality of, can be as shown in Figure 3, a plurality of step-up transformer T in parallel on inverter 2 outputs
1T
n, connect a plurality of CCFL respectively
1CCFL
n
Claims (5)
1, a kind of cold-cathode fluorescence lamp power supply of urban network high-voltage power, it is characterized in that: comprise city's net height straightening is connect the rectifier (1) that is rectified into direct current, the output of described rectifier (1) is reverse into the high straightening/friendship inverter (2) of high-frequency ac and the step-up transformer (T) that the high-frequency ac voltage of described inverter (2) output is raise that the high-frequency and high-voltage of being exported exchanges receives cold-cathode fluorescence lamp.
2, the cold-cathode fluorescence lamp power supply of urban network high-voltage power according to claim 1, it is characterized in that: be connected to circuit of power factor correction (3) between rectifier (1) and high straightening/friendship inverter (2), described circuit of power factor correction (3) is by the inductance (L) of series connection and diode (D), at the transistor (Q of its contact parallel connection
1) three constitutes T shape circuit and at the electric capacity (C in parallel on the end that goes out of this T shape circuit
1) form, the control circuit of circuit of power factor correction is bound up on described transistor (Q
1) on.
3, the cold-cathode fluorescence lamp power supply of urban network high-voltage power according to claim 1 and 2 is characterized in that: described high straightening/friendship inverter (2) for by transistor with recommend, a kind of inverter circuit that constitutes in the half-bridge, full-bridge circuit version.
4, the cold-cathode fluorescence lamp power supply of urban network high-voltage power according to claim 3 is characterized in that: pulse width control or FREQUENCY CONTROL are adopted in transistorized control in the described inverter circuit.
5, the cold-cathode fluorescence lamp power supply of urban network high-voltage power according to claim 1 and 2 is characterized in that: described step-up transformer (T) has a plurality of parallel connections, connects a described cold-cathode fluorescence lamp respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420049662 CN2696271Y (en) | 2004-04-27 | 2004-04-27 | Cold cathode fluorescent lamp light source supplied by urban network high-voltage power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420049662 CN2696271Y (en) | 2004-04-27 | 2004-04-27 | Cold cathode fluorescent lamp light source supplied by urban network high-voltage power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2696271Y true CN2696271Y (en) | 2005-04-27 |
Family
ID=34776689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420049662 Expired - Fee Related CN2696271Y (en) | 2004-04-27 | 2004-04-27 | Cold cathode fluorescent lamp light source supplied by urban network high-voltage power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2696271Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537752A (en) * | 2011-12-26 | 2012-07-04 | 张瑞娇 | CCFL (Cold Cathode Fluorescent Lamp) lamp bulb |
| CN104362875A (en) * | 2014-11-25 | 2015-02-18 | 国网吉林省电力有限公司延边供电公司 | Inverter power supply |
| CN107612453A (en) * | 2017-09-12 | 2018-01-19 | 海信（山东）空调有限公司 | A kind of DRIVEN BY AIR CONDITIONING COMPRESSOR system, compressor of air conditioner and air-conditioning |
| CN107634695A (en) * | 2017-09-12 | 2018-01-26 | 海信（山东）空调有限公司 | A kind of DRIVEN BY AIR CONDITIONING COMPRESSOR system, compressor of air conditioner and air-conditioning |
| CN109802577A (en) * | 2019-02-27 | 2019-05-24 | 延边中谷领创电力科技有限公司 | Plasma electric source device |
| CN109962627A (en) * | 2019-03-07 | 2019-07-02 | 延边中谷领创电力科技有限公司 | The plasma electric source device of Parallel Control |
-
2004
- 2004-04-27 CN CN 200420049662 patent/CN2696271Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537752A (en) * | 2011-12-26 | 2012-07-04 | 张瑞娇 | CCFL (Cold Cathode Fluorescent Lamp) lamp bulb |
| CN104362875A (en) * | 2014-11-25 | 2015-02-18 | 国网吉林省电力有限公司延边供电公司 | Inverter power supply |
| CN107612453A (en) * | 2017-09-12 | 2018-01-19 | 海信（山东）空调有限公司 | A kind of DRIVEN BY AIR CONDITIONING COMPRESSOR system, compressor of air conditioner and air-conditioning |
| CN107634695A (en) * | 2017-09-12 | 2018-01-26 | 海信（山东）空调有限公司 | A kind of DRIVEN BY AIR CONDITIONING COMPRESSOR system, compressor of air conditioner and air-conditioning |
| CN109802577A (en) * | 2019-02-27 | 2019-05-24 | 延边中谷领创电力科技有限公司 | Plasma electric source device |
| CN109962627A (en) * | 2019-03-07 | 2019-07-02 | 延边中谷领创电力科技有限公司 | The plasma electric source device of Parallel Control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1278301C (en) | Apparatus for supplying power and liquid crsytal display having the same | |
| CN101203084B (en) | Power supply circuit for LCD backlight and method thereof | |
| US7291987B2 (en) | Power supply system for flat panel display devices | |
| CN2664338Y (en) | Power supply for LCD screen | |
| CN1156200C (en) | Ballast system | |
| CN201563081U (en) | Solar energy conversion module and power supply system utilizing same | |
| CN101685980B (en) | Full-bridge zero-voltage boost switching resonant converter based on LLC used for UPS | |
| CN1930925A (en) | Lamp driver using solar cells | |
| EP1580871A1 (en) | A quasi-active power factor correction circuit for switching power supply | |
| US7477021B2 (en) | Non-discontinuous neon power supply with high power factor | |
| CN101163361A (en) | Light source driving device | |
| EP1592115A3 (en) | A new architecture of power supply system for lcd apparatus | |
| Li et al. | High-power-factor single-stage LCC resonant inverter for liquid crystal display backlight | |
| CN100486092C (en) | Driving circuit used as inverter and display device | |
| CN1691869B (en) | Controller and driver architecture for double-ended circuitry for powering cold cathode fluorescent lamps | |
| CA2276726A1 (en) | Parallel-storage series-drive electronic ballast | |
| CN2696271Y (en) | Cold cathode fluorescent lamp light source supplied by urban network high-voltage power | |
| CN2453468Y (en) | Back light module for liquid crystal display | |
| CN1665367A (en) | Lighting device for discharge lamp | |
| CN100473251C (en) | Device and method for light-modulating control of fluorescent lamp | |
| US20060017401A1 (en) | Dimming control techniques using self-excited gate circuits | |
| CN1501756A (en) | Driving discharge luminous tube and light changes controller thereof | |
| KR100651079B1 (en) | Zero-voltage Switching Half-bridge Inverter | |
| CN200969207Y (en) | Back-light source driver for liquid crystal display screen | |
| CN200962172Y (en) | A backlight module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HOUSE 6, BUILDING 2, ZHONGJIANGONGYE BUILDING, NO. Free format text: FORMER NAME OR ADDRESS: 3A, BITAO CENTER, NO. 8, YIKOUTAIZI ROAD, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE |
|
| CP03 | Change of name, title or address |
Patentee address after: Floor 2, building 18, Zhongjian Arts crafts emporium, No. 6, Nanshan District, Shenzhen, Guangdong Patentee address before: Shenzhen City, Guangdong province Nanshan District Taizi road Shekou No. 8 pictorial center 3A |
|
| ASS | Succession or assignment of patent right |
Owner name: WEIGUAN TECHNOLOGY (SHENZHEN) LTD. Free format text: FORMER OWNER: SHENZHEN MAIGEMITE ELECTRIC TECHNOLOGY CO., LTD. Effective date: 20061208 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061208 Address after: 21, 518081, Sha Tau Kok Free Trade Zone, Guangdong, Shenzhen Patentee after: Proview Technology (Shenzhen) Co.,Ltd. Address before: 6 Building 2, building 18, Arts crafts emporium, No. 518067, Shenzhen, Nanshan District, Guangdong Patentee before: Shenzhen Megmeet Electrical Technology Co.,Ltd. |
|
| DD01 | Delivery of document by public notice |
Addressee: Su Huilun Document name: Notification to Pay the Fees |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20101206 Granted publication date: 20050427 |
|
| DD01 | Delivery of document by public notice |
Addressee: Su Huilun Document name: Notice of preservation procedure |
|
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20110606 Granted publication date: 20050427 |
|
| DD01 | Delivery of document by public notice |
Addressee: Proview Technology (Shenzhen) Co.,Ltd. SuHuiLun Document name: Notification to Pay the Fees Addressee: Su Huilun Document name: Notification of Termination of Procedure |
|
| DD01 | Delivery of document by public notice |
Addressee: Su Huilun Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050427 Termination date: 20110427 |