CN102711346B - Multi-output electronic ballast - Google Patents
Multi-output electronic ballast Download PDFInfo
- Publication number
- CN102711346B CN102711346B CN201110079249.2A CN201110079249A CN102711346B CN 102711346 B CN102711346 B CN 102711346B CN 201110079249 A CN201110079249 A CN 201110079249A CN 102711346 B CN102711346 B CN 102711346B
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- inverter
- control circuit
- switch element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
-
- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention relates to a multi-output electronic ballast used for driving a plurality of groups of lamps. The multi-output electronic ballast comprises an alternating current-direct current converting circuit, a first inverter circuit, a second inverter circuit, a boost voltage generation circuit and a control circuit, wherein the alternating current-direct current converting circuit is used for converting an alternating current input voltage into a high direct current voltage; the first inverter circuit is used for selectively converting the high direct current voltage into a first alternating current output voltage; the second inverter circuit is used for converting the high direct current voltage into a second alternating current output voltage; the boost voltage generation circuit is used for generating a boost voltage; and the control circuit is used for selectively receiving electric energy from the boost voltage and generating and transmitting a control signal to a first inverter control circuit according to a turn-on state of a first external switch. When the control signal generated by the control circuit is transmitted to the first inverter control circuit, the first inverter control circuit starts running, and then the first inverter circuit converts the high direct circuit voltage into the first alternating circuit output voltage. The multi-output electronic ballast saves cost of electric elements, and has the advantages of small size, small occupied space and the like.
Description
Technical field
The present invention relates to a kind of electric stabilizer, particularly relate to a kind of electric stabilizer of multi output, and optionally stop output output voltage.
Background technology
Illumination is the primary demand of the mankind, in recent years along with global economy and trade and business activity frequent, and the raising of house quality of the life, electric consumption on lighting also up rises, overall lighting demand electric power is very considerable, the most widely used lamp body is a kind of low-pressure gaseous discharge lamp at present, also fluorescent lamp or fluorescent lamp is claimed, therefore, if the energy-conservation of this kind of low-pressure gaseous discharge lamp can be devoted to, when saving considerable electric energy, along with the epoch develop and the lifting of social life level, generally common illumination driving circuit has not applied and has used, low EMI, high efficiency, High Power Factor, flicker free and lightweight, the illumination of high-quality, the electric stabilizer that power saving is saved becomes the main flow of lighting apparatus in recent years.
The circuit structure of this type of electric stabilizer is slightly complicated, known single electric stabilizer exported comprises AC-DC change-over circuit and inverter circuit, during operation, first by AC-DC change-over circuit, AC-input voltage (civil power) is converted to high-voltage dc voltage, by inverter circuit, this high-voltage dc voltage is converted to the ac output voltage of high frequency to drive fluorescent tube again, wherein, AC-DC change-over circuit can comprise power factor correction (PFC) function, to improve the power factor of electric stabilizer, and inverter circuit realizes high efficiency by adjust operation frequency, flicker free, the illumination of high-quality.
Now in large space, such as warehouse, all uses a large amount of fluorescent lamps as room lighting.By day, outdoor bright and clear or indoor without personnel's operation time, optionally closed portion fluorescent lamp, such as, closes wherein one group in two groups of fluorescent tubes, avoids wasting energy to reach energy-conservation object.
For reaching the light regulating technology of optionally closed portion light fixture, the current practice is to provide a kind of electric stabilizer of multi output, drives two groups of fluorescent tubes (first group of fluorescent tube, second group of fluorescent tube).The electric stabilizer of known multi output comprises one first AC-DC change-over circuit, one second AC-DC change-over circuit, one first inverter circuit and one second inverter circuit, wherein, first AC-DC change-over circuit has a first input end and one first output, first output and the first inverter circuit are electrically connected, and the power circuit that the first AC-DC change-over circuit and the first inverter circuit are formed is in order to drive first group of fluorescent tube, similarly, second AC-DC change-over circuit has one second input and one second output, second output and the second inverter circuit are electrically connected, and the power circuit that the second AC-DC change-over circuit and the second inverter circuit are formed is in order to drive second group of fluorescent tube.
Whether luminous in order to allow user control these two groups of fluorescent tubes, one first switch is connected in series at first input end, and be connected in series one second external switch at the second input, and whether determine whether input voltage imports the first or second AC-DC change-over circuit respectively, so namely optionally closes fluorescent tube by external switch by the conducting of external switch.
Owing to driving the power circuit of each group fluorescent tube separate, therefore, multiple AC-DC change-over circuit is comprised in the electric stabilizer of multi output, and AC-DC change-over circuit inside comprises the force device of multiple high cost, therefore the electric stabilizer of known multi output not only takes up space because volume is large, cost is considerable especially.
Therefore, how to develop a kind of high cost solving the electric stabilizer of known multi output and the method taken up space, real is problem in the urgent need to address at present.
Summary of the invention
A main purpose of the present invention is the electric stabilizer providing a kind of multi output, and it has the advantages such as cost is lower, volume is little and do not take up space, and reaches the object that user can be allowed optionally to close many groups of (individual) fluorescent tubes.
For reaching above-mentioned purpose, of the present invention one compared with broad embodiment for providing a kind of electric stabilizer of multi output, organize fluorescent tube to drive more, comprise: an AC-DC change-over circuit, be connected to one second external switch and a DC bus, the AC-input voltage via this second external switch is converted to a high-voltage dc voltage; One first inverter circuit, is connected with this DC bus, optionally this high-voltage dc voltage is converted to one first ac output voltage to, first group of fluorescent tube; One second inverter circuit, is connected with this DC bus, this high-voltage dc voltage is converted to one second ac output voltage to, second group of fluorescent tube; One boost voltage produces circuit, in order to produce a boost voltage; And a control circuit, be connected to one first external switch, one first inverter control circuit that boost voltage produces circuit and this first inverter circuit, this control circuit optionally receives the electric energy of this boost voltage according to the conducting state of this first external switch and produces one and control signal to this first inverter control circuit; Wherein, when this control signal that this control circuit produces is sent to this first inverter control circuit, this first inverter control circuit brings into operation and makes this first inverter circuit this high-voltage dc voltage is converted to this first ac output voltage to this first group of fluorescent tube.
The present invention only comprises single AC-DC change-over circuit, and pass through control circuit, control a wherein inverter circuit whether to run, the electric stabilizer being different from known multi output comprises multiple AC-DC change-over circuit, so can save the cost of the force device of AC-DC change-over circuit inside, in addition, control circuit is simple, so the electric stabilizer of multi output of the present invention has, volume is little, the advantage such as do not take up space.
Accompanying drawing explanation
Fig. 1 is the circuit box schematic diagram of the electric stabilizer of the multi output of present pre-ferred embodiments.
Fig. 2 is the detailed circuit schematic of the control circuit of the electric stabilizer of the multi output of present pre-ferred embodiments.
Fig. 3 is the detailed circuit schematic of the electric stabilizer of the multi output of present pre-ferred embodiments.
Description of reference numerals in above-mentioned accompanying drawing is as follows:
Light fixture 1
The electric stabilizer 2 of multi output
Multiple (group) fluorescent tube 3
Power supply unit 4
The first end 4a of power supply unit
Second end 4b of power supply unit
First group of fluorescent tube 31
Second group of fluorescent tube 32
DC bus 20 (DC bus)
AC-DC change-over circuit 21
First inverter circuit 22
Second inverter circuit 23
Boost voltage produces circuit 24
Control circuit 25
EMI Filtering unit 211
Rectification circuit 212
Circuit of power factor correction 213
First inverter control circuit 221
First switching circuit 222
Second bleeder circuit 223
First resonant circuit 224
First preheat coil 225
First protective circuit 226
Second inverter control circuit 231
Second switch circuit 232
3rd bleeder circuit 233
Second resonant circuit 234
Second preheat coil 235
Second protective circuit 236
Testing circuit 251
Power factor correction control circuit 2131
Bleeder rectifier circuit 2511
First bleeder circuit 2512
The test side 25a of control circuit
First switch element Q1
The control end Q1a of the first switch element
The current input terminal Q1b of the first switch element
Second switch element Q2
The control end Q2a of second switch element
The current input terminal Q2b of second switch element
3rd switch element Q3
The control end Q3a of the 3rd switch element
4th switch element Q4
5th switch element Q5
AC-input voltage Vin
AC input current Iin
First ac output voltage Vo1
Second ac output voltage Vo2
Boost voltage Vcc
High-voltage dc voltage Vdc
Switching signal Vs1
First external switch S1
Second external switch S2
Control signal Vc
First direct voltage Vdc1
Second direct voltage Vdc2
First electric capacity C1
Second electric capacity C2
3rd electric capacity C3
4th electric capacity C4
First resistance R1
Second resistance R2
3rd resistance R3
4th resistance R4
5th resistance R5
6th resistance R6
7th resistance R7
8th resistance R8
9th resistance R9
First diode D1
Second diode D2
3rd diode D3
4th diode D4
First Zener diode ZD1
Second Zener diode ZD2
First inductance L 1
Bus capacitance Cb
First resonant inductance Lr1
First resonant capacitance Cr1
Embodiment
Some exemplary embodiments embodying feature & benefits of the present invention describe in detail in the explanation of back segment.Be understood that the present invention can have various changes in different modes, it does not depart from the scope of the present invention, and explanation wherein and accompanying drawing are in itself when the use explained, and is not used to limit the present invention.
Refer to Fig. 1, it is the circuit box schematic diagram of the electric stabilizer of the multi output of present pre-ferred embodiments, as shown in Figure 1, electric stabilizer 2 and multiple (group) fluorescent tube 3 of multi output are arranged in light fixture 1, wherein, the electric stabilizer 2 of multi output exports multiple output voltage, to drive multiple (group) fluorescent tube 3 respectively, in this embodiment, the AC-input voltage Vin that power supply unit 4 provides is converted to one first ac output voltage Vo1 and the one second ac output voltage Vo2 of high frequency by the electric stabilizer 2 of multi output, and each group fluorescent tube 31, 32 comprise at least one fluorescent tube, but not as limit.The electric stabilizer 2 of multi output comprises AC-DC change-over circuit 21,1 first inverter circuit 22,1 second inverter circuit 23, boost voltage and produces circuit 24 and a control circuit 25, wherein the input side of AC-DC change-over circuit 21 is connected with power supply unit 4, and the outlet side of AC-DC change-over circuit 21 is connected with DC bus 20 (DC bus), such as, in order to AC-input voltage Vin (civil power) is converted to high-voltage dc voltage Vdc, a 450V.
The input side of the first inverter circuit 22 is connected with DC bus 20, and the outlet side of the first inverter circuit 22 is connected with first group of fluorescent tube 31, in order to high-voltage dc voltage Vdc to be optionally converted to the first ac output voltage Vo1 of high frequency.The input side of the second inverter circuit 23 is connected with DC bus 20, and the outlet side of the second inverter circuit 23 is connected with second group of fluorescent tube 32, in order to high-voltage dc voltage Vdc to be converted to the second ac output voltage Vo2 of high frequency.Boost voltage produces circuit 24, in order to produce boost voltage Vcc, and such as 15V.One first inverter control circuit 221 that control circuit 25 is connected to DC bus 20, boost voltage produces circuit 24 and the first inverter circuit 22, and be connected with power supply unit 4 by one first outside external switch S1, in order to the state according to the first external switch S1, optionally boost voltage Vcc or high-voltage dc voltage Vdc is imported the first inverter control circuit 221 via control circuit 25, whether run to control the first inverter circuit 22, and reach the object of optionally closing first group of fluorescent tube 31.In this embodiment, the electric stabilizer of multi output more comprises a bus capacitance Cb, is connected to DC bus 20, in order to this high-voltage dc voltage Vdc filtering.
Referring again to Fig. 1, whether luminous in order to allow user control these two groups of fluorescent tubes 31,32, the first external switch S1 is connected in series at the test side 25a of control circuit 25, and be connected in series one second external switch S2 at the input side of AC-DC change-over circuit 21, and whether determine whether the first inverter circuit 22 and the second inverter circuit 23 run by the conducting of the second external switch S2.When the second external switch S2 conducting, AC-input voltage Vin imports the input side of AC-DC change-over circuit 21 via the second external switch S2, AC-input voltage Vin is converted to high-voltage dc voltage Vdc by AC-DC change-over circuit 21, high-voltage dc voltage Vdc is converted to the second ac output voltage Vo2 by the second inverter circuit 23, and drives second group of fluorescent tube 32 luminous.
One end of first external switch S1 can be selected one with a first end 4a (live wire) of power supply unit 4 or one second end 4b (ground wire) and is connected, and the other end of the first external switch S1 is connected with the test side 25a of control circuit 25, in this embodiment, the first external switch S1 is connected with the second end 4b of power supply unit 4.When the first external switch S1 conducting, the energy of AC-input voltage Vin can be sent to the test side 25a of control circuit 25, control circuit 25 is made to produce control signal Vc to the first inverter control circuit 221 according to the conducting state of the first external switch S1, electric energy wherein needed for control signal Vc operation is optionally provided by boost voltage Vcc or high-voltage dc voltage Vdc, now the first inverter control circuit 221 meeting of the first inverter circuit 22 control the first inverter circuit 22 according to this control signal Vc and start action, high-voltage dc voltage Vdc being converted to the first alternating voltage Vo1 makes first group of fluorescent tube 31 luminous.On the contrary, by day, outdoor bright and clear or indoor without personnel's operation time, user can close the first external switch S1, make the energy of AC-input voltage Vin cannot be sent to the test side 25a of control circuit 25 via the first external switch S1, it is out of service to control the first inverter circuit 22 that control circuit 25 can stop producing control signal Vc to the first inverter control circuit 221 according to the closed condition of the first external switch S1.
Refer to Fig. 2 and coordinate Fig. 1, wherein Fig. 2 is the detailed circuit schematic of the control circuit of the electric stabilizer of the multi output of present pre-ferred embodiments, as shown in Figure 2, control circuit 25 comprises a testing circuit 251, one first switch element Q1 and one first resistance R1, wherein the control end Q1a of testing circuit 251 and the first switch element Q1 and the first external switch S1 is connected, the first switch element Q1 conducting or cut-off is controlled in order to the conducting state according to the first external switch S1, first switch element Q1 and boost voltage produce circuit 24 and are connected, and be connected with the first inverter control circuit 221 by the first resistance R1.In this embodiment, testing circuit 251 comprises a bleeder rectifier circuit 2511, one first electric capacity C1, one first Zener diode ZD1 (Zener Diode), one first bleeder circuit 2512, one second switch element Q2 and one second resistance R2, wherein bleeder rectifier circuit 2511 is connected with the first external switch S1, the cathode terminal of the first Zener diode ZD1 is connected with one end of bleeder rectifier circuit 2511 and the first electric capacity C1, the anode tap of the first Zener diode ZD1 is connected with the first bleeder circuit 2512, first bleeder circuit 2512 is connected between the control end Q2a of the first Zener diode ZD1 and second switch element Q2, the current input terminal Q2b of second switch element Q2 is connected with the control end Q1a of the first switch element Q1 by one second resistance R2.
In this embodiment, bleeder rectifier circuit 2511 comprises one the 3rd resistance R3, one the 4th resistance R4 and one first diode D1, and the 3rd resistance R3, the 4th resistance R4, the first external switch S1 and the first diode D1 connect in a series arrangement, in order to carry out dividing potential drop and rectification to transmitting from the first external switch S1 the AC-input voltage Vin come, and produce one first direct voltage Vdc1 to the first electric capacity C1.This first Zener diode ZD1 must be greater than a such as threshold voltage value in order to the magnitude of voltage limiting this first direct voltage Vdc1, such as 10V, beginning energy conducting, when this first direct voltage Vdc1 to this first electric capacity C1 charge make the magnitude of voltage of the first direct voltage Vdc1 be greater than threshold voltage value time, the first Zener diode ZD1 just conducting.
First bleeder circuit 2512 comprises one the 5th resistance R5 and the 6th resistance R6, 5th resistance R5 is connected between the control end Q2a of the first Zener diode ZD1 and second switch element Q2, 6th resistance R6 is connected to the control end Q2a of the 5th resistance R5 and second switch element Q2, when after the first Zener diode ZD1 conducting, first bleeder circuit 2512 can carry out dividing potential drop by the 5th resistance R5 and the 6th resistance R6 to this first direct voltage Vdc1 and produce one second direct voltage Vdc2, this second direct voltage Vdc2 can make second switch element Q2 conducting, then testing circuit 251 can export a switching signal Vs1 of electronegative potential, in the present embodiment, because switching signal Vs1 is relatively lower than high-voltage dc voltage Vdc or boost voltage Vcc, therefore the first switch element Q1 conducting can be made.In the present embodiment, control circuit 25 more comprises one the 7th resistance R7 in order to current limliting, be connected to current input terminal Q1b and the DC bus 20 of the first switch element Q1, when the first switch element Q1 conducting, high-voltage dc voltage Vdc or boost voltage Vcc is through the first switch element Q1 to the first inverter control circuit 221, namely produce control signal Vc to the first inverter control circuit 221, make first group of fluorescent tube 31 luminous.
When making the first switch element Q1 conducting when the first external switch S1 conducting, the electric energy of control signal Vc is sustainable to be provided by boost voltage Vcc, makes this first inverter circuit 22 export the first ac output voltage Vo1.Boost voltage produces circuit 24 and the electric energy of the second ac output voltage Vo2 or high-voltage dc voltage Vdc can be utilized to produce boost voltage Vcc, when when circuit brings into operation, the magnitude of voltage of boost voltage Vcc is not enough, energy required when the first inverter control circuit 221 cannot be provided to run, in other embodiments, before and after the first inverter circuit 22 stable operation, the electric energy of control signal Vc can be provided by high-voltage dc voltage Vdc or boost voltage Vcc respectively.In other words, when the magnitude of voltage of boost voltage Vcc is not enough, the electric energy of high-voltage dc voltage Vdc is passed to the first inverter circuit 221 via the first switch element Q1, namely the electric energy of control signal Vc is provided by high-voltage dc voltage Vdc, when the magnitude of voltage being connected in boost voltage Vcc rises to enough magnitudes of voltage, the electric energy of boost voltage Vcc is passed to the first inverter circuit 221 via the first switch element Q1, and namely the electric energy of control signal Vc changes is provided by boost voltage Vcc.In the present embodiment, control circuit 25 more comprises one second Zener diode ZD2 and one second electric capacity C2, wherein the second Zener diode ZD2 is connected to the current input terminal Q1b of the first switch element Q1, in order to prevent the magnitude of voltage of control signal Vc too high, second electric capacity C2 is connected to the current input terminal Q1b of the first switch element Q1, in order to the energy needed for filtering and storage control signal Vc.When the first external switch S1 conducting makes circuit bring into operation, and during the magnitude of voltage of boost voltage Vcc deficiency, the electric energy of control signal Vc is provided by high-voltage dc voltage Vdc and the second electric capacity C2 simultaneously, the speed that the magnitude of voltage that can reduce control signal Vc declines, when the magnitude of voltage being connected in boost voltage Vcc rises to enough magnitudes of voltage, the electric energy of control signal Vc changes to be provided by boost voltage Vcc.In the present embodiment, control circuit 25 more comprises one the 8th resistance R8, between the control end Q1a being connected to the first switch element Q1 and current input terminal Q1b, in order to prevent because noise jamming causes the first switch element Q1 misoperation.
Refer to Fig. 3 and coordinate Fig. 1, wherein Fig. 3 is the detailed circuit schematic of the electric stabilizer of the multi output of present pre-ferred embodiments, as shown in Figure 3, AC-DC power supply change-over circuit 21 comprises an EMI Filtering unit 211 (EMI unit), one rectification circuit 212 and a circuit of power factor correction 213, wherein EMI Filtering unit 211 is connected with the AC of the first external switch S1 and rectification circuit 212, the DC side of rectification circuit 212 is connected with the input side of circuit of power factor correction 213, and the outlet side of circuit of power factor correction 213 is connected with DC bus 20.
In this embodiment, circuit of power factor correction 213 comprises power factor correction control circuit 2131,1 first inductance L 1, a 1 second diode D2, one the 9th resistance R9 and the 3rd switch element Q3, wherein, one end of first inductance L 1 is connected with the DC side of rectification circuit 212, the other end is connected with the anode tap of the second diode D2, and the cathode terminal of the second diode D2 is connected with DC bus 20, the 3rd switch element Q3 is connected with the 9th resistance R9, the first inductance L 1 and the second diode D2.Power factor correction control circuit 2131 is connected with the control end Q3a of the 3rd switch element Q3, and by control the 3rd switch element Q3 conducting or cut-off, the CURRENT DISTRIBUTION of AC input current Iin is made to be similar to the sinusoidal waveform of AC-input voltage Vin, to increase power factor, EMI Filtering unit 211 then in order to intercept the high-frequency noise of electric stabilizer 2 itself and the external noise from AC-input voltage Vin of multi output, produces to avoid the situation of interactive interference.
In this embodiment, first inverter circuit 22 comprises the first inverter control circuit 221,1 first switching circuit 222,1 second bleeder circuit 223 and one first resonant circuit 224, wherein the first inverter control circuit 221 is connected with control circuit 25 and the first switching circuit 222, runs in order to control the first switching circuit 222.Second bleeder circuit 223 is connected to DC bus 20, in order to produce a branch pressure voltage (Vdc/2).First resonant circuit 224 comprises one first resonant inductance Lr1 and one first resonant capacitance Cr1 forms a tandem resonant circuit, produces resonant reactive for making circuit.When the first external switch S1 and the second external switch S2 conducting simultaneously, AC-input voltage Vin is converted to high-voltage dc voltage Vdc by AC-DC power supply change-over circuit 21, control circuit 25 will export control signal Vc to the first inverter control circuit 221 of electronegative potential, now the first inverter control circuit 221 can control the first switching circuit 222 and runs, and makes the electric energy of high-voltage dc voltage Vdc optionally export the first resonant circuit 224 to by the first switching circuit 222.
In this embodiment, first switching circuit 222 comprises the 4th switch element Q4 and the 5th switch element Q5,4th switch element Q4 and the 5th switch element Q5 is connected in series, and the second bleeder circuit 223 comprises the 3rd electric capacity C3 and the 4th electric capacity C4, and the 3rd electric capacity C3 and the 4th electric capacity C4 is connected in series.High-voltage dc voltage Vdc by the alternatively conducting of the 4th switch element Q4 and the 5th switch element Q5 or the resonant reactive of cut-off and the first resonant circuit 224, and is converted to the first ac output voltage Vo1 of high frequency by the first inverter circuit 22.And in the present embodiment, first inverter circuit 22 more comprises one first preheat coil 225 (Winding), i.e. the first preheat circuit, the first resonant inductance Lr1 same magnetic core (Core) structure in itself and the first resonant circuit 224, in order to carry out preheating to first group of fluorescent tube 31.
In addition, second inverter circuit 23 comprises one second inverter control circuit 231, second switch circuit 232, the 3rd bleeder circuit 233,1 second resonant circuit 234 and one second preheat coil 235, i.e. the second preheat circuit, its annexation is identical with the first inverter circuit 22 with operational mode, therefore repeat no more, the boost voltage Vcc that the energy source of the second inverter control circuit 231 is produced by boost voltage generation circuit 24 provides, therefore the second inverter circuit 23 when the second external switch S2 conducting, namely can start continuous service.
In this embodiment, first and second inverter circuit 22,23 more comprises one first protective circuit 226 and one second protective circuit 236, in order to when first or second group of fluorescent tube 31,32 fault, and the electric stabilizer 2 of protection multi output.Below will for first group of fluorescent tube 31, first protective circuit 226 comprises the 3rd diode D3 and the 4th diode D4, it is connected with the second bleeder circuit 223, when first group of fluorescent tube 31 fault, interim in the positive-negative half-cycle of the first ac output voltage Vo1, the electric discharge of first group of fluorescent tube 31 is asymmetric, such as only discharge at positive half period, this is monolateral is operated in when not having connection first protective circuit 226, one of them is too high to cause the magnitude of voltage of the 3rd electric capacity C3 or the 4th electric capacity C4, such as higher than the magnitude of voltage of high-voltage dc voltage Vdc, and when magnitude of voltage higher than direct voltage Vdc of the magnitude of voltage of such as the 4th electric capacity C4, correspondence is connected to the 3rd diode D3 meeting conducting of the 4th electric capacity C4, make the 4th electric capacity C4 cannot continue charging, avoid the magnitude of voltage of the 4th electric capacity C4 too high and cause capacitance damage.Similarly, the annexation of the second protective circuit 236 inner member and operational mode, similar in appearance to the first protective circuit 226, are not repeated herein.
In sum, the electric stabilizer of multi output provided by the invention, only comprise single AC-DC change-over circuit, and whether by control circuit, control a wherein inverter circuit and run, the electric stabilizer being different from known multi output comprises multiple AC-DC change-over circuit, so can save the cost of the force device of AC-DC change-over circuit inside, in addition, control circuit is simple, so the electric stabilizer of multi output of the present invention has, volume is little, the advantage such as do not take up space.Generally speaking, when user closes the first external switch, energy required when control circuit is by stopping providing the first inverter control circuit to run, makes the first inverter circuit out of service, to realize optionally closing first group of fluorescent tube.
The present invention must be appointed by person familiar with the technology and executes craftsman and to think and for modifying as all, but de-as the scope of attached claim institute for protecting.
Claims (14)
1. an electric stabilizer for multi output, organize fluorescent tube to drive more, comprising:
One AC-DC change-over circuit, is connected to one second external switch and a DC bus, and the AC-input voltage via this second external switch is converted to a high-voltage dc voltage;
One first inverter circuit, is connected with this DC bus, optionally this high-voltage dc voltage is converted to one first ac output voltage to, first group of fluorescent tube;
One second inverter circuit, is connected with this DC bus, this high-voltage dc voltage is converted to one second ac output voltage to, second group of fluorescent tube;
One boost voltage produces circuit, in order to produce a boost voltage; And
One control circuit, be connected to one first external switch, one first inverter control circuit that this boost voltage produces circuit and this first inverter circuit, this control circuit optionally receives the electric energy of this boost voltage according to the conducting state of this first external switch and produces one and control signal to this first inverter control circuit;
Wherein, when this control signal that this control circuit produces is sent to this first inverter control circuit, this first inverter control circuit brings into operation and makes this first inverter circuit this high-voltage dc voltage is converted to this first ac output voltage to this first group of fluorescent tube.
2. the electric stabilizer of multi output as claimed in claim 1, wherein this control circuit is more connected to this DC bus, and optionally receives the electric energy of this boost voltage or this high-voltage dc voltage according to the conducting state of this first external switch and produce this and control signal to this first inverter control circuit.
3. the electric stabilizer of multi output as claimed in claim 1, wherein this control circuit comprises:
One first switch element, produces circuit with this boost voltage and is connected;
One first resistance, is connected to this first inverter control circuit and this first switch element; And
One testing circuit, be connected to control end and this first external switch of this first switch element, the conducting state according to this first external switch controls this first switching elements conductive or cut-off.
4. the electric stabilizer of multi output as claimed in claim 3, wherein this testing circuit comprises:
One second resistance, is connected with the control end of this first switch element;
One bleeder rectifier circuit, is connected with this first external switch, to carry out dividing potential drop and rectification to this AC-input voltage and to produce one first direct voltage;
One first electric capacity, is connected with this bleeder rectifier circuit;
One first Zener diode, is connected to this first electric capacity and this bleeder rectifier circuit, is greater than a threshold voltage value with the magnitude of voltage limiting this first direct voltage;
One first bleeder circuit, is connected with this first Zener diode, produces one second direct voltage to carry out dividing potential drop to this first direct voltage; And
One second switch element, the control end of this second switch element is connected with this first bleeder circuit, and the current input terminal of this second switch element is connected with this second resistance.
5. the electric stabilizer of multi output as claimed in claim 4, wherein this bleeder rectifier circuit comprises: one the 3rd resistance, one the 4th resistance and one first diode, and the 3rd resistance, the 4th resistance, this first diode and this first external switch are connected in series.
6. the electric stabilizer of multi output as claimed in claim 4, wherein this first bleeder circuit comprises: one the 5th resistance and one the 6th resistance, 5th resistance is connected between this first Zener diode and control end of this second switch element, and the 6th resistance is connected to the control end of the 5th resistance and this second switch element.
7. the electric stabilizer of multi output as claimed in claim 3, wherein this control circuit more comprises one second Zener diode, is connected to the current input terminal of this first switch element, to prevent the magnitude of voltage of this control signal too high.
8. the electric stabilizer of multi output as claimed in claim 3, wherein this control circuit more comprises one second electric capacity, is connected to the current input terminal of this first switch element, to store the energy needed for this control signal.
9. the electric stabilizer of multi output as claimed in claim 3, wherein this control circuit more comprises one the 7th resistance, is connected to current input terminal and this DC bus of this first switch element.
10. the electric stabilizer of multi output as claimed in claim 3, wherein this control circuit more comprises one the 8th resistance, is connected to control end and the current input terminal of this first switch element, to prevent the first switch element misoperation.
The electric stabilizer of 11. multi output as claimed in claim 1, wherein this first inverter circuit comprises:
One first switching circuit, is connected with this DC bus;
One second bleeder circuit, is connected to this DC bus, to produce a branch pressure voltage;
One first resonant circuit, is connected to this first switching circuit; And
One first inverter control circuit, is connected to this first switching circuit and this control circuit, receives the electric energy of this control signal and controls the operation of this first switching circuit.
The electric stabilizer of 12. multi output as claimed in claim 11, wherein this first inverter circuit more comprises one first protective circuit, is connected with this second bleeder circuit, to prevent the magnitude of voltage of this second bleeder circuit too high.
The electric stabilizer of 13. multi output as claimed in claim 10, wherein this first inverter circuit more comprises one first preheat circuit, to carry out preheating to this first group of fluorescent tube.
The electric stabilizer of 14. multi output as claimed in claim 1, wherein this AC-DC change-over circuit comprises:
One EMI Filtering unit, is connected with this first external switch;
One rectification circuit, is connected with this EMI Filtering unit; And
One circuit of power factor correction, is connected to this rectification circuit and this DC bus, to increase power factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110079249.2A CN102711346B (en) | 2011-03-28 | 2011-03-28 | Multi-output electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110079249.2A CN102711346B (en) | 2011-03-28 | 2011-03-28 | Multi-output electronic ballast |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102711346A CN102711346A (en) | 2012-10-03 |
| CN102711346B true CN102711346B (en) | 2015-04-08 |
Family
ID=46903843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110079249.2A Expired - Fee Related CN102711346B (en) | 2011-03-28 | 2011-03-28 | Multi-output electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102711346B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002647A (en) * | 2012-12-13 | 2013-03-27 | 张家港智能电力研究院有限公司 | Intelligent electronic ballast |
| CN104219859B (en) * | 2013-05-30 | 2017-02-15 | 美的集团股份有限公司 | lamp and control device thereof |
| CN109660125A (en) * | 2017-10-12 | 2019-04-19 | 首利实业股份有限公司 | The circuit structure of high power power power supply unit |
| CN109996384A (en) * | 2019-05-18 | 2019-07-09 | 中山市大方圆电器有限公司 | A kind of stabilizer electronic control circuit and method |
| CN114421791A (en) * | 2020-10-28 | 2022-04-29 | 苏州捷芯威半导体有限公司 | Double-output energy conversion device, modulation method and power supply equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101553069A (en) * | 2008-04-02 | 2009-10-07 | 台达电子工业股份有限公司 | Electronic stabilizer circuit |
| CN101594725A (en) * | 2008-05-27 | 2009-12-02 | 大同股份有限公司 | Electronic stabilizer of single-stage fluorescent lamps |
| CN101730352A (en) * | 2008-10-13 | 2010-06-09 | 寰磁电子股份有限公司 | Backlight source for driving image display device and driving system for driving multi-tube lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020011806A1 (en) * | 2000-02-25 | 2002-01-31 | Moisin Mihail S. | Ballast circuit with independent lamp control |
-
2011
- 2011-03-28 CN CN201110079249.2A patent/CN102711346B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101553069A (en) * | 2008-04-02 | 2009-10-07 | 台达电子工业股份有限公司 | Electronic stabilizer circuit |
| CN101594725A (en) * | 2008-05-27 | 2009-12-02 | 大同股份有限公司 | Electronic stabilizer of single-stage fluorescent lamps |
| CN101730352A (en) * | 2008-10-13 | 2010-06-09 | 寰磁电子股份有限公司 | Backlight source for driving image display device and driving system for driving multi-tube lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102711346A (en) | 2012-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102752940B (en) | High-efficiency LED (light-emitting diode) drive circuit and drive method thereof | |
| CN202603010U (en) | Driving circuit of compatible LED (Light Emitting Diode) lamp tube | |
| CN102711346B (en) | Multi-output electronic ballast | |
| CN103825437B (en) | Alternating current (ac)-direct current (dc) power booster and ac-dc power control module for ac and dc illuminations | |
| CN203840584U (en) | LED drive circuit and LED light fixture | |
| CN102438377A (en) | LED (Light Emitting Diode) constant-current driving circuit with high power factor | |
| CN108777902A (en) | Connection method and the low-loss LED light of tunable optical are pressed in a kind of constant current of LED light | |
| CN205584562U (en) | Emitting diode actuating system with luminous signal is stated from power line | |
| CN103220861B (en) | Bi-wire lamp control system based on energy storage method | |
| CN103094975B (en) | A kind of battery charging circuit and LED lamp | |
| CN102348307A (en) | LED street lamp and driving power supply circuit thereof | |
| CN205793546U (en) | A kind of constant current driver circuit for LED and LED light device | |
| CN103648223A (en) | Multi-channel light-emitting diode (LED) linear driver | |
| CN204616166U (en) | LED function conversion circuit | |
| CN202931620U (en) | LED fluorescent lamp tube compatible with electronic ballast and LED fluorescent lamp | |
| CN202551458U (en) | Conversion module for driving LED (Light-Emitting Diode) by using electronic ballast | |
| CN201429013Y (en) | LED emergency lighting lamp | |
| CN201409247Y (en) | Driving circuit of LED (Light-Emitting Diode) lamp | |
| CN109996366A (en) | LED illumination system with dimming function | |
| CN207589238U (en) | A kind of driving circuit with PFC for LED street lamp | |
| TWI437926B (en) | Multi-output electronic ballast | |
| CN203596952U (en) | Mixed constant current LED lamp | |
| Seo et al. | DC level dimmable LED driver using DC distribution | |
| CN103687209A (en) | Alternating-current drive circuit of LED streetlight | |
| CN103025035B (en) | Resonant capacitance adjustment element and the current preheating type electric stabilizer that is suitable for |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20150408 Termination date: 20190328 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |