CN105611708A - Novel electronic ballast - Google Patents
Novel electronic ballast Download PDFInfo
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- CN105611708A CN105611708A CN201510740969.7A CN201510740969A CN105611708A CN 105611708 A CN105611708 A CN 105611708A CN 201510740969 A CN201510740969 A CN 201510740969A CN 105611708 A CN105611708 A CN 105611708A
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- circuit
- ballast
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- fluorescent tube
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Abstract
The invention discloses a novel electronic ballast which comprises a control unit, a filter circuit, a rectification circuit, a protection circuit and an output stage circuit. The control unit is composed of a current sensor, a control circuit and a voltage sensor, the current sensor and the voltage sensor are used to detect the current and voltage of a load (R0) respectively, and the control circuit is used to receive signals of the voltage sensor and the current sensor and control operation of the ballast according to the received signals. According to the novel ballast, a light modulation function is realized, sweep frequency ignition can be used effectively eliminate resonant frequency drift caused by practical device parameter errors, the light modulation function can be used selectively according to practical conditions, resource configuration is more flexible, and the cost is reduced compared to the scheme in which an original electronic ballast needs to be changed to realize the function of light modulation.
Description
Technical field
The present invention relates to a kind of electricity field, especially electronic ballast.
Background technology
In current existing light fixture technology, be in several shortcomings: can not regulate the brightness of lamp, service life of poor safety performance and lamp is low. By above shortcoming, we need a kind of effectively solution.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, provide a kind of with dimming function, practical electronic ballast.
For achieving the above object, the present invention is achieved through the following technical solutions:
Electronic ballast; include control module, filter circuit, rectification circuit, holding circuit and output-stage circuit; described control module comprises current sensor, control circuit and voltage sensor; described current sensor and voltage sensor are for detection of electric current and the voltage of load (R0); described control circuit, for the signal of receiver voltage sensor and current sensor, is controlled the operation of ballast according to the signal receiving.
Further, described output-stage circuit includes half-bridge inversion circuit, resonance circuit and filament preheating circuit, described output-stage circuit is for being connected between described charge pump power supply circuits and fluorescent tube, and obtain the direct current of circuit of power factor correction output, for described charge pump power supply circuits and fluorescent tube provide electric energy;
Described half-bridge inversion circuit connects described ballast control circuit for control input end, power input connects circuit of power factor correction, under the driving of described ballast control circuit, is alternating current output by the DC inverter of circuit of power factor correction output;
Described resonance circuit is for obtaining the voltage to described fluorescent tube build-up of luminance by resonance, the input of described resonance circuit connects the output of described half-bridge inversion circuit, the output of described resonance circuit connects described fluorescent tube, and the input of described charge pump power supply circuits is connected between described half-bridge inversion circuit and resonance circuit;
Described filament preheating circuit for giving the filament pre-heating of described fluorescent tube in the time that described electric ballast starts, the input of described filament preheating circuit connects the output of described resonance circuit, and the output of described filament preheating circuit connects described fluorescent tube.
Further; described electric ballast also includes holding circuit and is located between ballast control circuit and output-stage circuit; described holding circuit drags down the voltage of the power input of described ballast control circuit for detection of time not in place to described fluorescent tube; described electric ballast is quit work, signal not in place is sent to adjusting control circuit by described ballast interface simultaneously.
Further, described ballast control circuit is connected with dimming interface circuit, ballast interface and adjusting control circuit, and described adjusting control circuit comprises micro-control unit, the first button and the second button; The pin that dims of described micro-control unit connects the first described button, and the pin that lightens of described micro-control unit connects described the second button, the lower margin of the described micro-control unit described ground port ground connection that is used for pegging graft; The pulse pin of described micro-control unit is for the described pulsewidth port of pegging graft, and output is subject to described the first button and second by the pulse signal of key control pulsewidth; Described micro-control unit close pin and described fluorescent tube close port;
Described ballast interface comprises pulsewidth port, fluorescent tube detection port, fluorescent tube close port, fluorescent tube its enable port, ballast power detection port, power port and ground port;
Described dimming interface circuit, connects the control input end of described ballast control circuit, and described ballast control signal is sent to described ballast control circuit.
Further, described rectification circuit is connected to circuit of power factor correction, include ballast control circuit and charge pump power supply circuits, the control input end of described ballast control circuit comprises frequency pin, the first pin and crus secunda, described frequency pin connects the output of described adjusting control circuit, according to described pulse signal, by the electric voltage frequency of half-bridge inversion circuit output described in the output control of described ballast control circuit, thereby control the luminosity of described fluorescent tube.
The invention has the beneficial effects as follows: realized dimming function by above-mentioned design, and be provided with frequency-sweeping igniting and effectively eliminated the impact of the resonant frequency drift causing because of practical devices parameter error, can select dimming function according to actual conditions, resource distribution is more flexible, if will realize dimming function and need to change the scheme of original electric ballast with respect to traditional electric ballast, provide cost savings.
Brief description of the drawings
Fig. 1 is overall schematic of the present invention.
Fig. 2 is the output-stage circuit structural representation of leading of the present invention.
Fig. 3 is the structural representation of control module of the present invention.
Detailed description of the invention
For to structure of the present invention, feature and effect thereof, can have and further understand and be familiar with, now lift a preferred embodiment, and be described with reference to the accompanying drawings as follows:
As shown in Figure 1, Figure 2 and Figure 3, the described electronic ballast of the present embodiment, it mainly includes control module, filter circuit, rectification circuit, holding circuit and output-stage circuit, control module comprises current sensor, control circuit and voltage sensor, current sensor and voltage sensor are for detection of electric current and the voltage of load (R0), control circuit, for the signal of receiver voltage sensor and current sensor, is controlled the operation of ballast according to the signal receiving; Output-stage circuit includes half-bridge inversion circuit, resonance circuit and filament preheating circuit, output-stage circuit is used for being connected between charge pump power supply circuits and fluorescent tube, and obtain the direct current of circuit of power factor correction output, for charge pump power supply circuits and fluorescent tube provide electric energy; Half-bridge inversion circuit connects described ballast control circuit for control input end, and power input connects circuit of power factor correction, under the driving of ballast control circuit, is alternating current output by the DC inverter of circuit of power factor correction output; Resonance circuit is for obtaining the voltage to fluorescent tube build-up of luminance by resonance, the input of resonance circuit connects the output of half-bridge inversion circuit, the output of resonance circuit connects described fluorescent tube, and the input of charge pump power supply circuits is connected between half-bridge inversion circuit and resonance circuit; Filament preheating circuit is for the filament pre-heating to fluorescent tube in the time that electric ballast starts, and the input of filament preheating circuit connects the output of resonance circuit, and the output of filament preheating circuit connects fluorescent tube; Electric ballast also includes holding circuit and is located between ballast control circuit and output-stage circuit, holding circuit drags down the voltage of the power input of ballast control circuit for detection of time not in place to fluorescent tube, electric ballast is quit work, signal not in place is sent to adjusting control circuit by ballast interface simultaneously; Ballast control circuit is connected with dimming interface circuit, ballast interface and adjusting control circuit, and adjusting control circuit comprises micro-control unit, the first button and the second button; The pin that dims of micro-control unit connects the first button, and the pin that lightens of micro-control unit connects the second button, the lower margin of the micro-control unit port ground connection that is used for pegging graft; The pulse pin of the micro-control unit pulsewidth port that is used for pegging graft, output is subject to the first button and second by the pulse signal of key control pulsewidth; Micro-control unit close pin and described fluorescent tube close port; Ballast interface comprises pulsewidth port, fluorescent tube detection port, fluorescent tube close port, fluorescent tube its enable port, ballast power detection port, power port and ground port; Dimming interface circuit, the control input end of connection ballast control circuit, sends to ballast control circuit by ballast control signal; Rectification circuit is connected to circuit of power factor correction, include ballast control circuit and charge pump power supply circuits, the control input end of ballast control circuit comprises frequency pin, the first pin and crus secunda, frequency pin connects the output of adjusting control circuit, according to pulse signal, the electric voltage frequency of being exported by the output control half-bridge inversion circuit of ballast control circuit, thereby the luminosity of control fluorescent tube.
Ballast of the present invention has been realized dimming function by above-mentioned design, and be provided with frequency-sweeping igniting and effectively eliminated the impact of the resonant frequency drift causing because of practical devices parameter error, can select dimming function according to actual conditions, resource distribution is more flexible, if will realize dimming function and need to change the scheme of original electric ballast with respect to traditional electric ballast, provide cost savings.
The foregoing is only the present invention's preferred embodiment; not limit practical range of the present invention with this, all persons that is familiar with technique, use principle of the present invention and technical characterictic; various changes and the decoration done, within all should being covered by the protection category that these claims define.
Claims (5)
1. electronic ballast; include control module, filter circuit, rectification circuit, holding circuit and output-stage circuit; it is characterized in that: described control module comprises current sensor, control circuit and voltage sensor; described current sensor and voltage sensor are for detection of electric current and the voltage of load (R0); described control circuit, for the signal of receiver voltage sensor and current sensor, is controlled the operation of ballast according to the signal receiving.
2. electronic ballast as claimed in claim 1, it is characterized in that: described output-stage circuit includes half-bridge inversion circuit, resonance circuit and filament preheating circuit, described output-stage circuit is for being connected between described charge pump power supply circuits and fluorescent tube, and obtain the direct current of circuit of power factor correction output, for described charge pump power supply circuits and fluorescent tube provide electric energy;
Described half-bridge inversion circuit connects described ballast control circuit for control input end, power input connects circuit of power factor correction, under the driving of described ballast control circuit, is alternating current output by the DC inverter of circuit of power factor correction output;
Described resonance circuit is for obtaining the voltage to described fluorescent tube build-up of luminance by resonance, the input of described resonance circuit connects the output of described half-bridge inversion circuit, the output of described resonance circuit connects described fluorescent tube, and the input of described charge pump power supply circuits is connected between described half-bridge inversion circuit and resonance circuit;
Described filament preheating circuit for giving the filament pre-heating of described fluorescent tube in the time that described electric ballast starts, the input of described filament preheating circuit connects the output of described resonance circuit, and the output of described filament preheating circuit connects described fluorescent tube.
3. electronic ballast as claimed in claim 1; it is characterized in that: described electric ballast also includes holding circuit and is located between ballast control circuit and output-stage circuit; described holding circuit drags down the voltage of the power input of described ballast control circuit for detection of time not in place to described fluorescent tube; described electric ballast is quit work, signal not in place is sent to adjusting control circuit by described ballast interface simultaneously.
4. electronic ballast as claimed in claim 1, it is characterized in that: described ballast control circuit is connected with dimming interface circuit, ballast interface and adjusting control circuit, described adjusting control circuit comprises micro-control unit, the first button and the second button; The pin that dims of described micro-control unit connects the first described button, and the pin that lightens of described micro-control unit connects described the second button, the lower margin of the described micro-control unit described ground port ground connection that is used for pegging graft; The pulse pin of described micro-control unit is for the described pulsewidth port of pegging graft, and output is subject to described the first button and second by the pulse signal of key control pulsewidth; Described micro-control unit close pin and described fluorescent tube close port;
Described ballast interface comprises pulsewidth port, fluorescent tube detection port, fluorescent tube close port, fluorescent tube its enable port, ballast power detection port, power port and ground port;
Described dimming interface circuit, connects the control input end of described ballast control circuit, and described ballast control signal is sent to described ballast control circuit.
5. electronic ballast as claimed in claim 1, it is characterized in that: described rectification circuit is connected to circuit of power factor correction, include ballast control circuit and charge pump power supply circuits, the control input end of described ballast control circuit comprises frequency pin, the first pin and crus secunda, described frequency pin connects the output of described adjusting control circuit, according to described pulse signal, by the electric voltage frequency of half-bridge inversion circuit output described in the output control of described ballast control circuit, thereby control the luminosity of described fluorescent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510740969.7A CN105611708A (en) | 2015-11-02 | 2015-11-02 | Novel electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510740969.7A CN105611708A (en) | 2015-11-02 | 2015-11-02 | Novel electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105611708A true CN105611708A (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510740969.7A Pending CN105611708A (en) | 2015-11-02 | 2015-11-02 | Novel electronic ballast |
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| Country | Link |
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| CN (1) | CN105611708A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395239A (en) * | 2011-12-14 | 2012-03-28 | 西安华雷船舶实业有限公司 | Electrical ballast |
| CN102769986A (en) * | 2011-05-06 | 2012-11-07 | 海洋王照明科技股份有限公司 | Electronic ballast |
-
2015
- 2015-11-02 CN CN201510740969.7A patent/CN105611708A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769986A (en) * | 2011-05-06 | 2012-11-07 | 海洋王照明科技股份有限公司 | Electronic ballast |
| CN102395239A (en) * | 2011-12-14 | 2012-03-28 | 西安华雷船舶实业有限公司 | Electrical ballast |
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Application publication date: 20160525 |