CN203537650U - Electrodeless lamp linear dimming driving circuit - Google Patents
Electrodeless lamp linear dimming driving circuit Download PDFInfo
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- CN203537650U CN203537650U CN201320574276.1U CN201320574276U CN203537650U CN 203537650 U CN203537650 U CN 203537650U CN 201320574276 U CN201320574276 U CN 201320574276U CN 203537650 U CN203537650 U CN 203537650U
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Abstract
The utility model provides an electrodeless lamp linear dimming driving circuit. The circuit comprises an input filter, a rectifying circuit, a power factor correction circuit, a half-bridge inverter circuit, a PWM signal output circuit, a D/A conversion circuit and a dimming signal input circuit, wherein the input filter, the rectifying circuit, the power factor correction circuit, the half-bridge inverter circuit, the PWM signal output circuit, the D/A conversion circuit and the dimming signal input circuit are sequentially connected. Dimming signals of the electrodeless lamp linear dimming driving circuit are controlled by PWM signals, and the duty ratio of the PWM signals is controlled by voltage signals outputted by the dimming signal input circuit, thereby being capable of enabling the dimming circuit to be effectively simplified, improving the signal control precision of the overall electrodeless lamp at the same time, and having a better energy saving effect.
Description
Technical field
The utility model relates to Non-polarized lamp, particularly relates to a kind of drive circuit that is used in the continuous light tuning realized on Non-polarized lamp.
Background technology
Non-polarized lamp is the abbreviation of high-frequency plasma electric discharge Non-polarized lamp, being the new high-tech product that the up-to-date scientific and technological achievements in field such as integrated application optics, power electronics, plasma, magnetic material are developed out, is a kind of new type light source that represents the high light efficiency of lighting technology, long-life, high-color rendering future thrust; Non-polarized lamp divides frequency stepless lamp and the stepless lamp of low frequency, with HF lamp without electrodes, compares, and the caloric value of low frequency electrodeless lamp is little, therefore can be made into high-power electrodeless lamp.Low frequency electrodeless lamp does not have filament and the electrode of conventional light source, mainly by radio-frequency generator, power coupler and glass cell-shell three parts, formed, by way of electromagnetic induction by Energy Coupling in bulb, be that comprehensive power electronics, plasma are learned, magnetic material is learned the new and high technology illuminating product that scheduling theory develops.In bulb, be filled with appropriate special gas, high-frequency energy makes it ionization or excites, and when the atom after exciting returns to ground state from higher energy level, sends ultraviolet photon, and ultraviolet photon excites the fluorescent material of inner wall to produce visible ray.
Non-polarized lamp sometimes needs brightness to carry out linear regulation in lighting process, as Non-polarized lamp adjusted to suitable brightness by rotary knob.The light modulation of existing Non-polarized lamp adopts linear element device to carry out more, and it is very complicated that employing linear element carries out light adjusting circuit, and circuit loss is larger, and accuracy deviation is larger, is unfavorable for the energy-conservation of Non-polarized lamp.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of simple in structure, Non-polarized lamp linearity light adjusting drive circuit that control precision is high.
For achieving the above object and other relevant objects, the utility model provides Non-polarized lamp linearity light adjusting drive circuit, this Non-polarized lamp linearity light adjusting drive circuit comprises: input filter, the input of described input filter is connected with AC power, and described input filter is for filtering input noise and the interference signal of AC power; Rectification circuit, the input of described rectification circuit is connected with the output of described input filter, and described rectification circuit is for being converted to direct current signal by AC signal; Circuit of power factor correction, the input of described circuit of power factor correction is connected with the output of described rectification circuit, and described circuit of power factor correction is for Circuit tuning power factor; Half-bridge inversion circuit, the input of described half-bridge inversion circuit is connected with the output of described circuit of power factor correction, described half-bridge inversion circuit drives Non-polarized lamp luminous for direct current being converted to high-frequency ac, and described half-bridge inversion circuit is provided with a dim signal input; Pwm signal output circuit, the output of described pwm signal output circuit is connected with described dim signal input, and described pwm signal output circuit output pwm signal is controlled the output frequency of described half-bridge inversion circuit; D/A change-over circuit, the output of described D/A change-over circuit is connected with the input of described pwm signal output circuit, and described pwm signal output circuit is according to the duty ratio of the input control pwm signal of D/A change-over circuit; Dim signal input circuit, described dim signal input circuit is connected with described D/A change-over circuit, and the linear signal of described dim signal input circuit output 0-10V is also converted to digital signal through described D/A change-over circuit.
Preferably, described pwm signal output circuit adopts IR2156 chip, the output of described D/A change-over circuit is connected with the digital signal input end of described IR2156 chip, and the dim signal input of described half-bridge inversion circuit is connected with the signal output part of described IR2156 chip.
Preferably, between D/A change-over circuit and described pwm signal output circuit, be provided with a photoelectric coupling circuit.
As mentioned above, Non-polarized lamp linearity light adjusting drive circuit of the present utility model has following beneficial effect: the dim signal of this Non-polarized lamp linearity light adjusting drive circuit is controlled by pwm signal, the voltage signal that the duty ratio of pwm signal is exported by dim signal input circuit is controlled, so just can make light adjusting circuit effectively be simplified, can improve whole Non-polarized lamp signal controlling precision, play better energy-saving effect simultaneously.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model embodiment.
Element numbers explanation
1 input filter
2 rectification circuits
3 circuit of power factor correction
4 half-bridge inversion circuits
5 pwm signal output circuits
6 photoelectric coupling circuits
7 D/A change-over circuits
8 dim signal input circuits
Embodiment
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this specification.The present invention can also be implemented or be applied by other different embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
As shown in Figure 1, the utility model provides a kind of Non-polarized lamp linearity light adjusting drive circuit, and this circuit comprises input filter 1, rectification circuit 2, circuit of power factor correction 3, half-bridge inversion circuit 4, pwm signal output circuit 5, photoelectric coupling circuit 6, D/A change-over circuit 7 and dim signal input circuit 8.The input of input filter 1 is connected with AC power, the input of rectification circuit 2 is connected with the output of input filter 1, the input of circuit of power factor correction 3 is connected with the output of rectification circuit 2, and the input of half-bridge inversion circuit 4 is connected with the output of circuit of power factor correction 3.On half-bridge inversion circuit 4, be also provided with a dim signal input, the output of pwm signal output circuit 5 is connected with dim signal input, D/A change-over circuit 7 is connected with pwm signal output circuit 5 by photoelectric coupling circuit 6, the input of D/A change-over circuit 7 is connected with the output of dim signal input circuit 8, the linear signal of dim signal input circuit 8 exportable 0-10V, dim signal input circuit 8 can be accomplished in several ways, as rotated the size of regulation output linear signal by rotation.
This Non-polarized lamp linearity light adjusting drive circuit is when work, and first alternating current filters out input noise and the interference signal of AC power through input filter 1, and then through rectification circuit 2, by rectification circuit 2, AC signal is converted to direct current signal; Direct current signal is undertaken entering half-bridge inversion circuit 4 after Modulating Power factor by circuit of power factor correction 3, and half-bridge inversion circuit 4 is converted to high-frequency ac by direct current signal and just can drives Non-polarized lamp luminous like this.
Pwm signal output circuit 5 output pwm signals, control the power output of Non-polarized lamp by pwm signal.As a kind of optimal way, pwm signal output circuit 5 adopts IR2156 chip, the output of D/A change-over circuit 7 is connected with the digital signal input end of IR2156 chip by photoelectric coupling circuit 6, and the dim signal input of half-bridge inversion circuit 4 is connected with the signal output part of IR2156 chip.Photoelectric coupling circuit 6 can prevent the output accuracy of external signal interference effect pwm signal output circuit 5.Dim signal input circuit 8 output linearity voltages can be converted to digital signal and be passed to pwm signal output circuit 5 by D/A change-over circuit 7, pwm signal output circuit 5 is controlled the duty ratio of its output pwm signal according to digital signal size, and then controls the brightness of Non-polarized lamp.D/A change-over circuit 7 can pass through chip microcontroller.
The dim signal of this Non-polarized lamp linearity light adjusting drive circuit is controlled by pwm signal, the voltage signal that the duty ratio of pwm signal is exported by dim signal input circuit is controlled, so just can make light adjusting circuit effectively be simplified, can improve whole Non-polarized lamp signal controlling precision, play better energy-saving effect simultaneously.So the utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (3)
1. a Non-polarized lamp linearity light adjusting drive circuit, is characterized in that, it comprises:
Input filter, the input of described input filter is connected with AC power, and described input filter is for filtering input noise and the interference signal of AC power;
Rectification circuit, the input of described rectification circuit is connected with the output of described input filter, and described rectification circuit is for being converted to direct current signal by AC signal;
Circuit of power factor correction, the input of described circuit of power factor correction is connected with the output of described rectification circuit, and described circuit of power factor correction is for Circuit tuning power factor;
Half-bridge inversion circuit, the input of described half-bridge inversion circuit is connected with the output of described circuit of power factor correction, described half-bridge inversion circuit drives Non-polarized lamp luminous for direct current being converted to high-frequency ac, and described half-bridge inversion circuit is provided with a dim signal input;
Pwm signal output circuit, the output of described pwm signal output circuit is connected with described dim signal input, and described pwm signal output circuit output pwm signal is controlled the output frequency of described half-bridge inversion circuit;
D/A change-over circuit, the output of described D/A change-over circuit is connected with the input of described pwm signal output circuit, and described pwm signal output circuit is according to the duty ratio of the input control pwm signal of D/A change-over circuit;
Dim signal input circuit, described dim signal input circuit is connected with described D/A change-over circuit, and the linear signal of described dim signal input circuit output 0-10V is also converted to digital signal through described D/A change-over circuit.
2. Non-polarized lamp linearity light adjusting drive circuit according to claim 1, it is characterized in that: described pwm signal output circuit adopts IR2156 chip, the output of described D/A change-over circuit is connected with the digital signal input end of described IR2156 chip, and the dim signal input of described half-bridge inversion circuit is connected with the signal output part of described IR2156 chip.
3. Non-polarized lamp linearity light adjusting drive circuit according to claim 1, is characterized in that: between D/A change-over circuit and described pwm signal output circuit, be provided with a photoelectric coupling circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320574276.1U CN203537650U (en) | 2013-09-16 | 2013-09-16 | Electrodeless lamp linear dimming driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320574276.1U CN203537650U (en) | 2013-09-16 | 2013-09-16 | Electrodeless lamp linear dimming driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203537650U true CN203537650U (en) | 2014-04-09 |
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ID=50423816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320574276.1U Expired - Fee Related CN203537650U (en) | 2013-09-16 | 2013-09-16 | Electrodeless lamp linear dimming driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203537650U (en) |
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2013
- 2013-09-16 CN CN201320574276.1U patent/CN203537650U/en not_active Expired - Fee Related
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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: 20140409 Termination date: 20150916 |
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| EXPY | Termination of patent right or utility model |