CN202857037U - LED light emitting circuit of alternating current power supply - Google Patents
LED light emitting circuit of alternating current power supply Download PDFInfo
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- CN202857037U CN202857037U CN 201220554807 CN201220554807U CN202857037U CN 202857037 U CN202857037 U CN 202857037U CN 201220554807 CN201220554807 CN 201220554807 CN 201220554807 U CN201220554807 U CN 201220554807U CN 202857037 U CN202857037 U CN 202857037U
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- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 230000001351 cycling effect Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model provides an LED light emitting circuit of an alternating current power supply, which comprises an LED unit and current limiting resistors, wherein an input end and an output end of the LED unit pass through the current limiting resistors thereof and are connected to the alternating current power supply. The LED unit comprises at least one LED sub-unit arranged on the main circuit, and the LED sub-unit comprises a divider resistor and at least one LED group connected with the divider resistor in parallel. The LED group is composed of two LED branch circuits whose conduction directions are opposite, wherein the two LED branch circuits are a forward direction LED branch circuit and a reverse direction LED branch circuit. Compared with the prior art, the LED light emitting circuit can effectively reduce the cost because a transformer is saved, simplify the structure, and improve the power consumption conversion rate while realizing full wave periodic operation after adopting the solution provided by the utility model.
Description
Technical field
The utility model relates to the technical field of illumination control, refers in particular to a kind of LED illuminating circuit of AC power.
Background technology
LED is a kind of solid-state semiconductor device, it can directly be converted into light to electricity, have that power consumption is low, long service life, volume is little and the characteristics of high brightness, lower calorific value, the LED lamp is compared more environmental protection and energy saving as lighting source with the traditional lighting light source, therefore the LED lamp certainly will replace the traditional lighting light fixture, present stage, existing various LED lamps quietly entered huge numbers of families, but also were applied to other each fields.Because the operating voltage of LED is direct current 2～3.6V, and line voltage is alternating current 220V, therefore, if existing LED lamp directly utilizes mains supply, generally need through AC transformation, rectification or series limiting resistor, convert High Level AC Voltage to LED work required low-voltage DC.At present, the LED power supply has two kinds of forms, and a kind of is to adopt AC power, and a kind of is DC power supply.The control of adopting the LED of DC power supply all is to adopt one road one-way SCR list to single control LED processed, and N LED then needs N controllable silicon, and this structure does not exist the danger of LED reverse breakdown and brightness higher.Adopt the led circuit of ac power supply to be divided into again two kinds, a kind of circuit requirement LED is the reverse parallel connection type of attachment, the all-wave cycling for whole led circuit, and there is not the danger of reverse breakdown, but for every paths of LEDs, be half-wave, brightness is darker but energy-conservation, the technical disadvantages of present this structure is simultaneously conducting of No. one bidirectional triode thyristor two paths of LED lamp, can not control the convenient of certain paths of LEDs lamp separately.Another does not have reverse parallel connection to connect exactly, the tactic pattern with ac power supply equally, there is the danger of reverse breakdown in the LED lamp, cause useful life shorter, although also be half-wave, but advantage is can make things convenient for to control separately certain paths of LEDs lamp work, and it is more that present technical disadvantages is that power line requires, and the N paths of LEDs then needs N root power line.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of simple and reasonable, safe and reliable, reduce cost, improve the power consumption transfer ratio, can realize the LED illuminating circuit of the cycling AC power of all-wave.
For achieving the above object, technical scheme provided by the utility model is: a kind of LED illuminating circuit of AC power, it includes LED unit and current-limiting resistance, the input of this LED unit, go out end through being connected in AC power behind the current-limiting resistance separately, wherein, described LED unit includes at least one the LED subelement on the main line, and described LED subelement includes divider resistance and at least one group LED group in parallel with divider resistance, and described LED group is to be made of the opposite LED branch road of two-way conducting direction, is respectively forward LED branch road and reverse LED branch road.
Described forward LED branch road includes at least one LED.
Described reverse LED branch road includes at least one LED.
The utility model is after having adopted such scheme, and compared with prior art, the utility model can effectively reduce cost (saving transformer) realizing the cycling while of all-wave, simplifies the structure, and has improved the power consumption transfer ratio.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model among the embodiment 1.
Fig. 2 is circuit theory diagrams of the present utility model among the embodiment 2.
Embodiment
The utility model is described in further detail below in conjunction with two specific embodiments.
Embodiment 1: shown in accompanying drawing 1, the LED illuminating circuit of the described AC power of present embodiment, it includes LED unit 1 and current-limiting resistance R1, R2, the input of this LED unit 1, go out end through being connected in AC power behind the current-limiting resistance separately, namely be the input of this LED unit 1 through being connected in the positive pole of AC power behind the current-limiting resistance R1, its input is connected in the negative pole of AC power after through current-limiting resistance R2; Wherein, the described LED of present embodiment unit 1 includes a LED subelement 2, and this LED subelement 2 includes a divider resistance R and the one group LED group 3 in parallel with this divider resistance R, and described LED group 3 is to be made of the opposite LED branch road of two-way conducting direction, be respectively forward LED branch road and reverse LED branch road, simultaneously, all be to only have a LED on the described forward LED of present embodiment branch road and the reverse LED branch road.
Embodiment 2: shown in accompanying drawing 2, the described LED subelement 2 of present embodiment has a plurality ofly as different from Example 1, and this a plurality of LED subelement 2 is connected on the main line; In addition, each the LED subelement 2 in the present embodiment includes a divider resistance R and the many group LED group 3 in parallel with this divider resistance R.
After adopting above scheme, the utility model in simplified structure, has been realized the all-wave cycling by the series-parallel connection mode, but for forward LED branch road and reverse LED branch road, all be half-wave, this compared to existing technology, the utility model can effectively reduce cost (saving transformer), and improved the power consumption transfer ratio, the energy-saving consumption is a desirable LED illuminating circuit by ac power supply, is worthy to be popularized.
The examples of implementation of the above are the preferred embodiment of the utility model only, are not to limit practical range of the present utility model with this, so the variation that all shapes according to the utility model, principle are done all should be encompassed in the protection range of the present utility model.
Claims (3)
1. the LED illuminating circuit of an AC power, it is characterized in that: it includes LED unit (1) and current-limiting resistance, the input of this LED unit (1), go out end through being connected in AC power behind the current-limiting resistance separately, wherein, described LED unit (1) includes at least one the LED subelement (2) on the main line, and described LED subelement (2) includes divider resistance (R) and at least one group LED group (3) in parallel with divider resistance (R), and described LED group (3) is to be made of the opposite LED branch road of two-way conducting direction, is respectively forward LED branch road and reverse LED branch road.
2. the LED illuminating circuit of a kind of AC power according to claim 1, it is characterized in that: described forward LED branch road includes at least one LED.
3. the LED illuminating circuit of a kind of AC power according to claim 1, it is characterized in that: described reverse LED branch road includes at least one LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220554807 CN202857037U (en) | 2012-10-26 | 2012-10-26 | LED light emitting circuit of alternating current power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220554807 CN202857037U (en) | 2012-10-26 | 2012-10-26 | LED light emitting circuit of alternating current power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202857037U true CN202857037U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220554807 Expired - Fee Related CN202857037U (en) | 2012-10-26 | 2012-10-26 | LED light emitting circuit of alternating current power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202857037U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602382A (en) * | 2015-02-15 | 2015-05-06 | 黄焕珠 | Alternating-current LED bulb lamp |
-
2012
- 2012-10-26 CN CN 201220554807 patent/CN202857037U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602382A (en) * | 2015-02-15 | 2015-05-06 | 黄焕珠 | Alternating-current LED bulb lamp |
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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: 20130403 Termination date: 20151026 |
|
| EXPY | Termination of patent right or utility model |