CN204616144U - A kind of control circuit of LED energy conserving lamp - Google Patents
A kind of control circuit of LED energy conserving lamp Download PDFInfo
- Publication number
- CN204616144U CN204616144U CN201520183861.8U CN201520183861U CN204616144U CN 204616144 U CN204616144 U CN 204616144U CN 201520183861 U CN201520183861 U CN 201520183861U CN 204616144 U CN204616144 U CN 204616144U
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- Prior art keywords
- rectifier bridge
- current
- end pin
- resistance
- led
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to LED circuit technical field, especially a kind of control circuit of LED energy conserving lamp.It comprises a rectifier bridge, the first resistance and filter capacitor, wherein one end of the first resistance is connected civil power, the other end and is connected with the 4th end pin of rectifier bridge by decompression capacitor, the two ends of decompression capacitor are parallel with the second resistance, filter capacitor is parallel between the first end pin of rectifier bridge and Qi tri-end pin, 3rd end pin of rectifier bridge is connected with current-limiting resistance, is parallel with several LED electricity-saving lamps be connected in series between current-limiting resistance and the first end pin of rectifier bridge.The utility model adopts constant current series system driving LED electricity-saving lamp electric current, utilizes decompression capacitor to limit the maximum operating currenbt of LED electricity-saving lamp, and is limited the electric current of LED electricity-saving lamp by current-limiting resistance further; Meanwhile, filter capacitor serves protecting against shock of turning on light and protects to obtain effect, and its structure is simple, easy for installation, efficient stable, has very strong practicality.
Description
Technical field
The utility model relates to LED circuit technical field, especially a kind of control circuit of LED energy conserving lamp.
Background technology
Along with the development of society and the progress of science and technology strength, the resource loss quantity of people in illumination is also increasing, and the energy resource consumption that illumination produces and problem of environmental pollution also order gradually cause the attention of people.Nowadays, the white light-emitting diode that LED electricity-saving lamp adopts the then green idea such as, energy-saving and environmental protection efficient with it enters the life of people, semiconductor lighting industry business opportunity is huge, commercially have vast potential for future development, the particularly appearance of LED electricity-saving lamp and development, will replace traditional sight lamp gradually, life that incandescent lamp is people provides service.
The light-emitting diode that LED electricity-saving lamp adopts is formed by semiconductor combinations such as GaP, GaAs, and its core structure is pn knot, and light-emitting diode not only has the characteristic of general pn structure, can carry out forward and reverse conducting, can also produce illumination under certain condition.Under forward voltage, electronics enters P district from N district, and hole enters N district by P district, enters few son in the other side region and how sub-recombination luminescence, produces illumination.At present, traditional LED circuit for controlling economical light existence and stability is not high, complex structure and other problems.
Utility model content
For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide the control circuit of the LED energy conserving lamp that a kind of structure is simple, efficiency is high.
To achieve these goals, the utility model adopts following technical scheme:
A kind of control circuit of LED energy conserving lamp, it comprises a rectifier bridge, the first resistance and filter capacitor, one end of described first resistance connects civil power, the other end is connected with the 4th end pin of rectifier bridge by decompression capacitor, the two ends of described decompression capacitor are parallel with the second resistance, described filter capacitor is parallel between the first end pin of rectifier bridge and Qi tri-end pin, 3rd end pin of described rectifier bridge is connected with current-limiting resistance, is parallel with several LED electricity-saving lamps be connected in series between described current-limiting resistance and the first end pin of rectifier bridge.
Owing to have employed such scheme, the utility model adopts constant current series system driving LED electricity-saving lamp electric current, utilizes decompression capacitor to limit the maximum operating currenbt of LED electricity-saving lamp, and is limited the electric current of LED electricity-saving lamp by current-limiting resistance further; Meanwhile, filter capacitor serves protecting against shock of turning on light and protects to obtain effect, and its structure is simple, easy for installation, efficient stable, has very strong practicality.
Accompanying drawing explanation
Fig. 1 is the circuit connection structure figure of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figure 1, the control circuit of a kind of LED energy conserving lamp of the present embodiment, it comprises a rectifier bridge D1, the first resistance R1 and filter capacitor C2, one end of first resistance R1 connects civil power, the other end is connected with the 4th end pin of rectifier bridge D1 by decompression capacitor C1, the two ends of decompression capacitor C1 are parallel with the second resistance R2, filter capacitor C2 is parallel between the first end pin of rectifier bridge D1 and Qi tri-end pin, the 3rd end pin of rectifier bridge D1 is connected with current-limiting resistance R3, is parallel with several LED electricity-saving lamps be connected in series between current-limiting resistance R3 and the first end pin of rectifier bridge D1.
Its operation principle is: LED electricity-saving lamp uses 220V alternating current to carry out full-bridge rectification by rectifier bridge D1 more usually after decompression capacitor C1 step-down, then provides constant-current supply through current-limiting resistance R3 to LED electricity-saving lamp again by filter capacitor C2.After step-down, the rated current of LED electricity-saving lamp is ± 18mA, and therefore, preferably, the installation of LED electricity-saving lamp also adopts cup rectangular to carry out, for it provides better heat radiation usually.In LED illumination circuit structure, LED electricity-saving lamp adopts the mode of all series connection, and make by the operating current of every LED electricity-saving lamp identical, its quantity can with increase in demand.
The series connection of LED electricity-saving lamp requires that driver can export higher voltage, the present embodiment adopts constant current series system driving LED electricity-saving lamp electric current, effectively can avoid a LEDs electricity-saving lamp because when cause for quality causes short circuit, when distributing, the voltage at remaining LED electricity-saving lamp two ends then can strengthen, and easily causes remaining LED electricity-saving lamp to be raised the problem of voltage damage.
Further illustrate: the first resistance R1 is the series resistance of a 300 Europe/2W-5W in the electric power incoming line of input civil power, can effectively reduce short circuit fault, avoid failure propagation, can also be convenient to measuring voltage counting circuit consumed power.
Decompression capacitor C1 is that whole LED electricity-saving lamp group operates capacitance decompression of taking, the capacitive reactance utilizing electric capacity to produce under the certain frequency of AC signal is to limit the maximum operating currenbt of LED electricity-saving lamp, when the voltage of 220V circulates at the two ends of decompression capacitor C1, its maximum current can produce to 70mA, although there is electric current to pass through, decompression capacitor C1 can not consume, decompression capacitor C1 reaches ideality, its streaming current is imaginary part electric current, do work then for reactive power.
Current-limiting resistance R3 generally adopts about 5K, prevents circuit voltage and temperature from raising, the electric current of restriction LED electricity-saving lamp.Filter capacitor C2 can produce cushioning effect to the charging current passed through from decompression capacitor C1, and reduce electric current to the loss of LED circuit, it will adopt the electric capacity of withstand voltage more than 250V.The moment of turning on light is because the existence of decompression capacitor C1 has a very large charging current; this electric current will produce damage to LED electricity-saving lamp; there is the intervention of filter capacitor C2; the complete filtered electric capacity C2 of the charging current of turning on light absorbs; serve protecting against shock protection of turning on light, filter capacitor C2 is also with withstand voltage more than 250V.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. the control circuit of a LED energy conserving lamp, it is characterized in that: it comprises a rectifier bridge, the first resistance and filter capacitor, one end of described first resistance connects civil power, the other end is connected with the 4th end pin of rectifier bridge by decompression capacitor, the two ends of described decompression capacitor are parallel with the second resistance, described filter capacitor is parallel between the first end pin of rectifier bridge and Qi tri-end pin, 3rd end pin of described rectifier bridge is connected with current-limiting resistance, is parallel with several LED electricity-saving lamps be connected in series between described current-limiting resistance and the first end pin of rectifier bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520183861.8U CN204616144U (en) | 2015-03-30 | 2015-03-30 | A kind of control circuit of LED energy conserving lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520183861.8U CN204616144U (en) | 2015-03-30 | 2015-03-30 | A kind of control circuit of LED energy conserving lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204616144U true CN204616144U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520183861.8U Expired - Fee Related CN204616144U (en) | 2015-03-30 | 2015-03-30 | A kind of control circuit of LED energy conserving lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204616144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869570A (en) * | 2016-05-25 | 2016-08-17 | 广西东显电子有限公司 | Energy-saving LED display screen |
-
2015
- 2015-03-30 CN CN201520183861.8U patent/CN204616144U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869570A (en) * | 2016-05-25 | 2016-08-17 | 广西东显电子有限公司 | Energy-saving LED display screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20160330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |