CN204634112U - The power circuit of many LED bulb - Google Patents
The power circuit of many LED bulb Download PDFInfo
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- CN204634112U CN204634112U CN201520323148.9U CN201520323148U CN204634112U CN 204634112 U CN204634112 U CN 204634112U CN 201520323148 U CN201520323148 U CN 201520323148U CN 204634112 U CN204634112 U CN 204634112U
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- led bulb
- rectification filtering
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Abstract
The utility model discloses a kind of power circuit of many LED bulb, this power circuit comprises: input rectification filtering module, square wave generation module, voltage changing module, output rectification filtering module and feedback module.Wherein, the input of input rectification filtering module is connected with AC power, the output of input rectification filtering module is connected with the input of square wave generation module, the output of square wave generation module is connected with the input of voltage changing module, the output of voltage changing module is connected with the input of output rectification filtering module, the output of output rectification filtering module is connected with LED bulb, the input of feedback module is connected with the output of voltage changing module, and the control signal output of feedback module is connected with the controlled end of square wave generation module.
Description
Technical field
The utility model relates to lamp power technical field, particularly relates to a kind of many LED(light emitting diode) power circuit of bulb.
Background technology
Current LED bulb is generally powered by AC power.The ac power frequency that China adopts is 50Hz, that is, by ac power supply LED bulb flicker per second 50 times.The LED bulb of stroboscopic easily makes people's kopiopia and can damage human eye.
Utility model content
The main object of the utility model is: provide one can provide DC power supply for many LED bulb, and the power circuit of many LED bulb of voltage constant, thus it is luminous without stroboscopic to realize LED bulb.
For achieving the above object, the utility model provides a kind of power circuit of many LED bulb, the power circuit of this many LED bulb comprises: for AC power rectifying and wave-filtering is exported the input rectification filtering module of DC power supply, for described DC power supply being converted to the square wave generation module of square-wave signal, for square-wave signal being carried out transformation conversion and exporting the voltage changing module that transformation changes square-wave signal, the output rectification filtering module that square-wave signal carries out the DC power supply that rectifying and wave-filtering is powered into LED bulb with output is changed to described transformation, and obtain the magnitude of voltage of described transformation conversion square-wave signal and export control signal to adjust the feedback module of the square wave pulse width of described square wave generation module according to the comparative result of described magnitude of voltage and preset reference value,
Wherein, the input of described input rectification filtering module is connected with described AC power, the output of described input rectification filtering module is connected with the input of square wave generation module, the output of described square wave generation module is connected with the input of described voltage changing module, the output of described voltage changing module is connected with the input of described output rectification filtering module, the output of described output rectification filtering module is connected with LED bulb, the input of described feedback module is connected with the output of described voltage changing module, the control signal output of described feedback module is connected with the controlled end of described square wave generation module.
Preferably, described voltage changing module is transformer, and wherein, the armature winding of described transformer is connected with the output of described square wave generation module, and the secondary winding of described transformer is connected with the input of described output rectification filtering module.
Preferably, described input rectification filtering module comprises rectifier bridge and the first filter capacitor, the input of described rectifier bridge is connected with described AC power, the output of described rectifier bridge is through described first filter capacitor ground connection, and the output of described rectifier bridge is also connected with the input of described square wave generation module.
Preferably, described output rectification filtering module comprises rectifier diode and the second filter capacitor, the anode of rectifier diode is connected with the output of described voltage changing module, the negative electrode of described rectifier diode is through described second filter capacitor ground connection, and the negative electrode of described rectifier diode is connected with LED bulb, for LED bulb is powered.
Preferably, the power circuit of many LED bulb also comprises LED bulb control module and trigger key, described trigger key is connected with the triggering signal input of described control module, described control module exports control signal, to control corresponding LED bulb conducting or cut-off according to triggering signal at its output.
The power circuit of many LED bulb that the utility model provides, AC power transformation is converted to the DC power supply needed for LED bulb by the input rectification filtering module in this power circuit, square wave generation module, voltage changing module and output rectification filtering module, thus can overcome the defect of the stroboscopic that ac power supply brings.In addition, the utility model can also monitor the magnitude of voltage of voltage changing module output in real time by feedback module, when magnitude of voltage is greater than or less than preset value, by the square wave pulse width of adjustment square wave generation module, thus realize the object of regulation output voltage, for LED bulb provides constant voltage.
Accompanying drawing explanation
Fig. 1 is the module diagram of power circuit first embodiment of the many LED bulb of the utility model;
Fig. 2 is the module diagram of power circuit second embodiment of the many LED bulb of the utility model.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of power circuit of many LED bulb.
With reference to the module diagram that Fig. 1, Fig. 1 are power circuit first embodiment of the many LED bulb of the utility model.The power circuit of a kind of many LED bulb that the present embodiment provides.The power circuit of this many LED bulb comprises: for AC power AC rectifying and wave-filtering is exported the input rectification filtering module 1 of DC power supply, for described DC power supply being converted to the square wave generation module 2 of square-wave signal, for square-wave signal being carried out transformation conversion and exporting the voltage changing module 3 that transformation changes square-wave signal, the output rectification filtering module 4 that square-wave signal carries out the DC power supply that rectifying and wave-filtering is powered into LED bulb D with output is changed to described transformation, and obtain the magnitude of voltage of described transformation conversion square-wave signal and export control signal to adjust the feedback module 5 of the square wave pulse width of described square wave generation module 2 according to the comparative result of described magnitude of voltage and preset reference value.Wherein, the input of described input rectification filtering module 1 is connected with described AC power AC, the output of described input rectification filtering module 1 is connected with the input of square wave generation module 2, the output of described square wave generation module 2 is connected with the input of described voltage changing module 3, the output of described voltage changing module 3 is connected with the input of described output rectification filtering module 4, the output of described output rectification filtering module 4 is connected with LED bulb D, the input of described feedback module 5 is connected with the output of described voltage changing module 3, the control signal output of described feedback module 5 is connected with the controlled end of described square wave generation module 2.
Input rectification filtering module 1 comprises input and output.The input of input rectification filtering module 1 is connected with AC power AC, so that AC power AC is done rectifying and wave-filtering process, and exports DC power supply.In the present embodiment, input rectification filtering module 1 comprises rectifier bridge (not shown) and the first filter capacitor (not shown), the input of described rectifier bridge is connected with described AC power AC, the output of described rectifier bridge is through described first filter capacitor ground connection, and the output of described rectifier bridge is also connected with the input of described square wave generation module 2.
Square wave generation module 2 comprises input, output and controlled end.The input of square wave generation module 2 is connected with the output of input rectification filtering module 1.DC power supply inputs to square wave generation module 2, and square wave generation module 2 pairs of DC power supply process, to export the square-wave signal of certain pulsewidth size at its output.The controlled end of square wave generation module 2 is connected with the control signal output of feedback module 5.Feedback module 5 outputs control signals to the controlled end of square wave generation module 2, thus the pulsewidth size of the square-wave signal of adjustment square wave generation module 2 output.
Voltage changing module 3 is for changing square-wave signal transformation, and in the present embodiment, voltage changing module 3 is transformer.Wherein, the armature winding of described transformer is connected with the output of described square wave generation module 2, and the secondary winding of described transformer is connected with the input of described output rectification filtering module 4.
Output rectification filtering module 4 pairs of transformation conversion square-wave signals carry out rectifying and wave-filtering process to export DC power supply.In the present embodiment, output rectification filtering module 4 comprises rectifier diode (not shown) and the second filter capacitor (not shown), the anode of rectifier diode is connected with the output of described voltage changing module 3, the negative electrode of described rectifier diode is through described second filter capacitor ground connection, and the negative electrode of described rectifier diode is connected with LED bulb D, for LED bulb D powers.
The reference value identical with the operating voltage of LED bulb D is preset with at feedback module 5.For providing constant voltage to LED bulb D, the magnitude of voltage of the transformation conversion square-wave signal of the output of feedback module 5 pairs of voltage changing modules 3 obtains, and the magnitude of voltage got and the reference value preset is compared.If when the magnitude of voltage got is greater than default reference value, feedback module 5 outputs control signals to square wave generation module 2, narrow with the pulsewidth controlling the square-wave signal that square wave generation module 2 exports, thus the magnitude of voltage of the transformation that voltage changing module 3 is exported conversion square-wave signal diminishes.Vice versa, do not repeat them here.
The power circuit of many LED bulb that the utility model provides, AC power AC transformation is converted to the DC power supply needed for LED bulb D by the input rectification filtering module 1 in this power circuit, square wave generation module 2, voltage changing module 3 and output rectification filtering module 4, thus can overcome the defect of the stroboscopic that AC power AC power supply station brings.In addition, the utility model can also monitor the magnitude of voltage of voltage changing module 3 output in real time by feedback module 5, when magnitude of voltage is greater than or less than preset value, by the square wave pulse width of adjustment square wave generation module 2, thus realize the object of regulation output voltage, for LED bulb D provides constant voltage.
In conjunction with the module diagram of power circuit second embodiment with reference to figure 2, Fig. 2 being the many LED bulb of the utility model.Based on above-described embodiment, in the present embodiment, the power circuit of many LED bulb also comprises LED bulb control module 6 and trigger key 7.Described trigger key 7 is connected with the triggering signal input of described LED bulb control module 6, and described LED bulb control module 6 exports control signal, to control corresponding LED bulb D conducting or cut-off according to triggering signal at its output.In the present embodiment, user can pass through operation trigger key 7, controls multiple LED bulb D light on and off simultaneously.Particularly, trigger key 7 sends triggering signal to LED bulb control module 6, LED bulb control module 6 exports identical control signal according to the control signal received at its output, can realize lighting simultaneously, extinguishing or variable color to make multiple LED bulb D.
These are 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 (5)
1. the power circuit of LED bulb more than a kind, it is characterized in that, comprise: for AC power rectifying and wave-filtering is exported the input rectification filtering module of DC power supply, for described DC power supply being converted to the square wave generation module of square-wave signal, for square-wave signal being carried out transformation conversion and exporting the voltage changing module that transformation changes square-wave signal, the output rectification filtering module that square-wave signal carries out the DC power supply that rectifying and wave-filtering is powered into LED bulb with output is changed to described transformation, and obtain the magnitude of voltage of described transformation conversion square-wave signal and export control signal to adjust the feedback module of the square wave pulse width of described square wave generation module according to the comparative result of described magnitude of voltage and preset reference value,
Wherein, the input of described input rectification filtering module is connected with described AC power, the output of described input rectification filtering module is connected with the input of square wave generation module, the output of described square wave generation module is connected with the input of described voltage changing module, the output of described voltage changing module is connected with the input of described output rectification filtering module, the output of described output rectification filtering module is connected with LED bulb, the input of described feedback module is connected with the output of described voltage changing module, the control signal output of described feedback module is connected with the controlled end of described square wave generation module.
2. the power circuit of many LED bulb as claimed in claim 1, it is characterized in that, described voltage changing module is transformer, wherein, the armature winding of described transformer is connected with the output of described square wave generation module, and the secondary winding of described transformer is connected with the input of described output rectification filtering module.
3. the power circuit of many LED bulb as claimed in claim 1, it is characterized in that, described input rectification filtering module comprises rectifier bridge and the first filter capacitor, the input of described rectifier bridge is connected with described AC power, the output of described rectifier bridge is through described first filter capacitor ground connection, and the output of described rectifier bridge is also connected with the input of described square wave generation module.
4. the power circuit of many LED bulb as claimed in claim 1, it is characterized in that, described output rectification filtering module comprises rectifier diode and the second filter capacitor, the anode of rectifier diode is connected with the output of described voltage changing module, the negative electrode of described rectifier diode is through described second filter capacitor ground connection, and the negative electrode of described rectifier diode is connected with LED bulb, for LED bulb is powered.
5. the power circuit of the many LED bulb as described in any one of claim 1 ~ 4, it is characterized in that, also comprise LED bulb control module and trigger key, described trigger key is connected with the triggering signal input of described control module, described control module exports control signal, to control corresponding LED bulb conducting or cut-off according to triggering signal at its output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520323148.9U CN204634112U (en) | 2015-05-19 | 2015-05-19 | The power circuit of many LED bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520323148.9U CN204634112U (en) | 2015-05-19 | 2015-05-19 | The power circuit of many LED bulb |
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| Publication Number | Publication Date |
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| CN204634112U true CN204634112U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520323148.9U Expired - Fee Related CN204634112U (en) | 2015-05-19 | 2015-05-19 | The power circuit of many LED bulb |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109308869A (en) * | 2017-07-27 | 2019-02-05 | 第移动有限公司 | Wireless control type transparent light emitting apparatus |
-
2015
- 2015-05-19 CN CN201520323148.9U patent/CN204634112U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109308869A (en) * | 2017-07-27 | 2019-02-05 | 第移动有限公司 | Wireless control type transparent light emitting apparatus |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160519 |