CN201134967Y - General type electronic ballast - Google Patents
General type electronic ballast Download PDFInfo
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- CN201134967Y CN201134967Y CNU2007200087693U CN200720008769U CN201134967Y CN 201134967 Y CN201134967 Y CN 201134967Y CN U2007200087693 U CNU2007200087693 U CN U2007200087693U CN 200720008769 U CN200720008769 U CN 200720008769U CN 201134967 Y CN201134967 Y CN 201134967Y
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Abstract
The utility model relates to a universal electronic ballast, which is characterized in that an alternating current power supply is switched in a full-wave rectification circuit, an active power factor calibration APFC circuit, a half-bridge inverter and a load RLC major loop in turn, wherein the other path output of the active power factor calibration APFC circuit is connected in turn with a step-down filter auxiliary power supply, a sliding frequency pulse-generating circuit and a half-bridge inverter, wherein the choke flow secondary winding of the load RLC major loop can provide two path outputs, wherein one path is output to the step-down filter auxiliary power supply, and the other is provided for a fault abnormal protective circuit, and provides the trigger signal voltage required by the abnormal states, wherein the output signals of the fault abnormal protective circuit control the power supply of the step-down filter auxiliary power supply. The ballast adopts the sliding frequency technology, can conduct with continuous sliding frequency in a brand with a considerable width, can generate required igniting voltage for the RLC light tube loops with different parameters, even can ignite a filament-breaking light tube, and greatly reduces the environment pollution which is caused by waste light tubes.
Description
Technical field:
The utility model belongs to lighting field, relates to fluorescent lamp, electricity-saving lamp, even its filament has broken, still can be lighted and the universal electronic ballast of operate as normal.
Background technology:
Existing fluorescent lamp, the electric ballast of electricity-saving lamp all adopts self-maintained circuit.If the filament of fluorescent tube has broken, just have to cancel, especially electricity-saving lamp, what quality was first-class at present also can only use 1 year " duration of insurance ", consequent " electronic waste " caused environmental pollution is very surprising, people say jokingly that electricity-saving lamp is energy-conservation economical, and acquisition cost is higher, so be difficult to substitute conventional incandescent comprehensively.
There is technical defective in self-oscillatory driving method:
1. improper when the grasp of filament pre-heating electric current, then lamp tube ends is easily turned black, and wears out thereby quicken fluorescent tube, and lamp tube service life shortens.
2. self-oscillation is single frequency, requires resonant capacitance (promptly starting electric capacity) and inductance (being choke) necessary strict supporting thus, and both numerical value are restricted respectively.If error amount is excessive, then fluorescent tube can't be lighted.
3. bigger defective is that the lamp tube ends filament must be intact.
4. when an electric ballast dragged several spots, debugging work load increased a lot, when taking a lot of work, increases cost again.
At above-mentioned problems, how to solve the task of promptly becoming the utility model research.
Summary of the invention:
The utility model is at the defective of existing electric ballast, adopts the sliding art designs frequently of dependable performance to go out and a kind ofly has wide compatibility, no filament pre-heating electric current, fracture of wire and also can start the universal electronic ballast of lighting and can drive many connect fluorescent tubes and power saving fluorescent lampss.
Technical solutions of the utility model are achieved in that a kind of universal electronic ballast, comprise full-wave rectifying circuit and load circuit, it is characterized in that AC power inserts full-wave rectifying circuit, Active Power Factor Correction APFC circuit, half-bridge inversion circuit, load RLC major loop successively;
Another road output of Active Power Factor Correction APFC circuit is connected to step-down filtering accessory power supply, sliding pulse generating circuit, half-bridge inversion circuit frequently successively, by the sliding output of pulse generating circuit frequently control half-bridge inversion circuit, provides the loaded work piece power supply;
The chokes auxiliary winding of load RLC major loop provides two-way output; one the tunnel exports to step-down filtering accessory power supply; replenish sliding pulse generating circuit electricity consumption frequently; the failure exception protective circuit is exported on another road; provide abnormality required triggering signal voltage, the power supply of failure exception protective circuit output signal control step-down filtering accessory power supply is supplied with.
Described AC power also is connected to surge voltage protection circuit, EMI filter circuit before inserting full-wave rectifying circuit successively.Necessary over-current over-voltage protection is provided, and suppresses from the interference of electrical network and the effect of power conditioner.
The utility model circuit structure design is reasonable, has adopted sliding frequency technology, can slide continuously in a quite wide frequency band frequently, and all can produce necessary the most about 2 for the not the same RLC fluorescent tube loop of parameter and do the voltage that lies prostrate, thus the disposable fluorescent tube of lighting; Especially under the situation that filament disconnects, fluorescent tube still normal ignition is luminous, and lamp tube ends can not turned black, and lamp tube service life prolongs at double.Both solve the problem that the fracture of wire fluorescent tube is lighted, significantly reduced environmental pollution, especially electric ballast and the integrated electricity-saving lamp of fluorescent tube that discarded fluorescent tube causes again, also reduced simultaneously the generation of electronic waste greatly.The series connection that this electric ballast can drag many fluorescent lamps and power saving fluorescent lamps simultaneously provides convenience, and can further improve energy-saving effect, is particularly useful for the need of public place or need highlight illumination.
Description of drawings:
Below in conjunction with concrete legend the utility model is described further:
Fig. 1 universal electronic ballast theory diagram
Fig. 2 universal electronic ballast circuit figure
Embodiment:
See figures.1.and.2, respectively composition and the effect that relates to each functional module in the theory diagram be described further below:
1. surge voltage protection circuit: it is by protective tube BX1, and piezo-resistance RV1 forms.In order to improve the reliability and security of electric ballast, civil power is imported through protective tube BX1 overcurrent protection, the piezo-resistance RV1 overvoltage protection that transient voltage suppresses.
2.EMI filter circuit: it is by capacitor C 1～C4, and inductance L 1 is formed.It is a kind of low pass filter, is mainly used in the inhibition radio frequency interference, promptly suppresses on the one hand the interference from electrical network, and the electromagnetic interference that self electric ballast is produced plays attenuation simultaneously, guarantees the effect of power conditioner.
3. full-wave rectifying circuit: it is by D1～D4, and capacitor C 5 is formed.Diode D1～D4 forms bridge full-wave rectifier, and little capacitor C 5 is exported the half-sinusoid dc pulse moving voltage of 100Hz as High frequency filter.
4. Active Power Factor Correction (APFC) circuit: it manages V1 by the field, step-up transformer B1, and isolating diode D7, output filter capacitor C9 and APFC controller IC IC1 form, and the IC1 model is KA7526.
Above-mentioned APFC circuit comprises following main circuit:
A, startup: it is by the secondary winding N2 of step-up transformer B1, diode D10, and resistance R 20, R5, R4, capacitor C 7 is formed.By resistance R 4, capacitor C 7 is formed start-up circuit, after energized, alternating voltage is formed bridge full-wave rectifier through diode D1～D4, after High frequency filter is carried out in the 100Hz pulsating direct current of exporting after 5 pairs of rectifications of capacitor C, one the tunnel charges through 4 pairs of capacitor C 7 of resistance R, voltage on the capacitor is risen according to index law, and last up voltage reaches integrated circuit (IC) 1 8. behind the rising threshold values of pin correspondence, and IC1 starts working, control speed-sensitive switch field pipe V1 enters conversion, and integrated circuit (IC) 1 operating current increases.The switch state of field pipe V1 is exported and is controlled by on another road through the elementary winding N1 of step-up transformer B1.This moment, secondary N2 induced correspondent voltage.This voltage is through diode D10 halfwave rectifier, and one the tunnel through 5 pairs of capacitor C 7 supplies chargings of resistance R, keep the 8. required normal working voltage value of IC1, guarantee the IC1 steady operation.Another road is through 5. pin of resistance R 20 to IC1, and this pin is the zero current detection comparator input terminal, and in order to detect the electric current among the winding N2, when the N2 winding voltage of differentiating step-up transformer drops to 1.8V, and promptly electric current drops to zero.
B, input sinusoidal voltage monitoring sample circuit: resistance R 1, R2 series connection are connected with resistance R 3 again, constitute bleeder circuit, capacitor C 6 is as High frequency filter, this partial pressure value has fully been reacted the current peak that flows through the elementary N1 of step-up transformer after the rectification output and has been followed input ac voltage and change by sinusoidal rule, and in good linear the transfer arranged by integrated circuit (IC) 1 internal multiplier, make the mean value of input current become a sine wave, thereby reach the purpose that improves power factor.
C, output sinusoidal voltage monitoring sample circuit: resistance R 8, connect with resistance R 10 in R9 series connection back, output voltage terminal is carried out dividing potential drop, the 1. pin internal error amplifier of partial pressure value input ic IC1, input value enters multiplier, two inputs that is to say this multiplier are respectively the power supply partial pressure value of partial pressure value behind the ac voltage rectifier and step-up transformer input back filtering, because multiplier has good linear transfer characteristic in very wide dynamic range, its output is directly proportional with the product of above-mentioned two inputs, thereby guarantees the same-phase of voltage and electric current.
D, current detecting: resistance R 7 directly reflects the size of high speed switch tube V1 by electric current.The i.e. size of the pressure drop on resistance R 7, the 4. pin of this value input ic IC1, it is the input inversion end of an internal comparator, and in-phase end then is to come from the output of multiplier and through the 1.65V voltage stabilizing, makes the reference voltage input of in-phase end as this comparator.This comparator is relatively exported and is entered inner RS latch.Set threshold values in case detect an electric current that flows through field pipe V1 above multiplier output, close a field pipe V1 immediately, the while also reaches the purpose of overcurrent protection.
E, driving output: a totem output stage is contained in integrated circuit (IC) 1 inside, directly drives speed-sensitive switch field pipe V1.By this APFC circuit output, after diode D7 isolated, capacitor C 9 filtering output dc voltages were 400V, supplied with by integrated circuit (IC) 2 and formed the sliding half-bridge inverter that frequently vibrates jointly with pipe V3, a V4.The power factor of APFC circuit can reach PF=0.99, the total harmonic wave THD of electric current＜10%.
5. sliding pulse generating circuit frequently: it is made up of model IR2155 integrated circuit (IC) 2, triode V2, diode D6, LED 1, resistance R 12, R13, R15～R17, capacitor C 11～C13.For circuit simple and direct, compact, it is IR2155 that integrated circuit (IC) 2 is selected model for use, and the timing resistor of its oscillating circuit is to connect with resistance R 17 after R15, the R16 parallel connection, and 2. and 3. between the pin of IC2 received at two ends respectively, timing capacitor C12 inserts the 3. pin of IC2, other end ground connection.In order to realize " frequently sliding " purpose, form the close lighttight photoelectrical coupler in dark chamber by LED 1 with photo resistance R15, through resistance R 13 current limlitings, after triode V2 collection emitter-base bandgap grading connects, one end resistance R 13 is connected on the 1. pin of IC2, the series loop that other end triode ground connection is constituted.The base loop of triode V2 is connected the other end ground connection of capacitor C 11 by diode D6 with resistance R 12 backs in parallel with capacitor C 11.The effect of diode D6 is when guaranteeing power failure, to make the voltage of capacitor C 11 drop to 0 immediately, is beneficial to the next time of work smoothly.Photoelectrical coupler is to be formed by LED 1 and photo resistance R15 encapsulation, for light-emitting diode, the PN junction electric current of LED of flowing through is big more, and then LED shell degree is big more, and the photo resistance resistance is just more little, vice versa, the R15 resistance is more little, and promptly frequency of oscillation is high more, otherwise frequency of oscillation is low more, thereby realize the process that a cline frequency changes, also be referred to as sliding process frequently.
6. half-bridge inverter: it is by upper and lower switch yard pipe V3, and V4 forms.By integrated circuit (IC) 2 5., 7. pin is alternately exported driving pulse, make a pipe V3, a pipe V4 take turns conducting with end, between two half-bridge mid point, form the square-wave voltage of alternation, its amplitude is (400/2=200) V.
7. load RLC major loop: it is by capacitor C 14～C17, the winding N4 of transformer B2, and inductance L 2, fluorescent tube H1, H2 series connection, fluorescent tube H3, H4 are composed in series.The alternating voltage of half-bridge inverter output is respectively through capacitor C 14, C15 coupling, and carries out the exchange process of the energy of energy storage and release with winding N4, N6.One the road to winding N4, capacitor C 16, fluorescent tube H1 connect with H2 and constitute series loop, connect with H4 to winding N6, fluorescent tube H3 and constitute series loop in another road.I.e. two load RLC loops.When half-bridge square-wave voltage frequency instantaneous frequency occurred and has equaled the natural frequency in load RLC loop in sliding process frequently, then series resonance takes place in load RLC loop at once, and on startup capacitor C 16, C17, produce a high pressure respectively with high-octane nearly 2KV, the head and the tail electrode of 16 couples of fluorescent tube H1 of capacitor C cascaded H 2 applies the high pressure of nearly 2KV, in like manner, the head and the tail electrode of capacitor C 17 couples of fluorescent tube H3, H4 series connection applies the high pressure of nearly 2KV, thereby fluorescent tube is started light and luminous.Electric current all is near sinusoidal ripples in this loop.
8. failure exception protection: it is by transformer B2 secondary winding N5, diode D11, and capacitor C 18～C21, resistance R 18, R19, voltage stabilizing didoe DW1, unidirectional controllable silicon S CR1 forms.In the design, the winding N5 of transformer B2, when the abnormality appearance, N5 induces high voltage under the calibration reason condition, through diode D11 rectification, through resistance R 18 current limlitings, this voltage is added in the backward end of voltage stabilizing didoe DW1, and the other end of DW1 is received the trigger electrode of unidirectional controllable silicon S CR1, makes the SCR1 conducting, after the SCR1 conducting, integrated circuit (IC) 2 is lost the job power supply and is quit work.SCR1 keeps conducting state till the failure exception state is eliminated.Capacitor C 18～C21 designs for the elimination interference signal misleads one-way SCR.
9. step-down filtering accessory power supply: it is by resistance R 11, R14, and diode D5, D8, capacitor C 10, the secondary winding N3 of transformer B2 forms.After alternating voltage is connected, APFC output 400V voltage charges to capacitor C 10 through resistance R 11, the unidirectional isolation of diode D5, when capacitor C 10 voltages rise to the voltage rising threshold values of IC2, IC2 enters work, and driving half-bridge inverter work, output current is when the winding N4 of transformer B2, N3 induces voltage, this voltage is through diode D8 rectification, replenish voltage on the capacitor C 10 after resistance R 14 current limlitings immediately, make integrated circuit (IC) 2 1. pin maintain stable operating voltage, guarantee the normal stable operation of IC2.
This electronic ballast characteristics are to have adopted sliding frequency technology, it is compared with conventional electronic ballast, the advantage that has is: the startup of non-pre-heated fluorescent lamp, electricity-saving lamp is lighted, and must be applied with kilovolt and high-voltage pulse with certain energy can make in the fluorescent tube gas breakdown produce glow discharge and is transformed into arc discharge rapidly and lights luminous in lamp tube ends.
Thereby all electric ballasts all are to adopt self-oscillation to drive semi-bridge inversion to make lamp loop RLC take place to be offset series resonance and to light fluorescent tube at present, are not more than 600V but produce high pressure.Its essential condition is the necessary intact i.e. no disconnection of filament at two ends simultaneously.
The design is quite different, adopts continuously sliding oscillation technology frequently, even the lamp tube ends filament has all disconnected, still can light fluorescent tube luminous smoothly, its reason is that driving frequency accurately equals lamp loop RLC natural frequency, can reach about 2KV so produce high-voltage value, and energy is very big.And, can also form the loop to many tubes series connection, still can once light these fluorescent tubes luminous.
Present technique and traditional self-oscillation basic difference are: the former is a series of frequencies that evenly change continuously in certain frequency range, and the latter then is the single-frequency point.
The above-mentioned physical circuit figure that provides is in order to illustrate feasibility of the present utility model; the integrated circuit that relates to concrete model all can adopt the congenerous element to replace; relate to and adopt photoelectrical coupler can adopt the same function element to replace among the design, this also should belong to the row of the utility model protection.
Claims (3)
1, a kind of universal electronic ballast comprises full-wave rectifying circuit and load circuit, it is characterized in that AC power inserts full-wave rectifying circuit, Active Power Factor Correction APFC circuit, half-bridge inversion circuit, load RLC major loop successively; Another road output of Active Power Factor Correction APFC circuit is connected to step-down filtering accessory power supply, sliding pulse generating circuit, half-bridge inversion circuit frequently successively, by the sliding output of pulse generating circuit frequently control half-bridge inversion circuit, provides the loaded work piece power supply; The chokes auxiliary winding of load RLC major loop provides two-way output; one the tunnel exports to step-down filtering accessory power supply; replenish sliding pulse generating circuit electricity consumption frequently; the failure exception protective circuit is exported on another road; provide abnormality required triggering signal voltage, the power supply of failure exception protective circuit output signal control step-down filtering accessory power supply is supplied with.
2, universal electronic ballast according to claim 1 is characterized in that also being connected to surge voltage protection circuit, EMI filter circuit successively before AC power inserts full-wave rectifying circuit.
3, universal electronic ballast according to claim 1, it is characterized in that sliding pulse generating circuit frequently is by integrated circuit (IC2), triode (V2), diode (D6), light-emitting diode (LED1), resistance (R12), (R13), (R15～R17), electric capacity (C11～C13) form, connect with resistance (R17) in the timing resistor of its oscillating circuit (R15, R16) back in parallel, 2. and 3. between the pin of integrated circuit (IC2) received at two ends respectively, timing capacitor (C12) inserts the 3. pin of integrated circuit (IC2), other end ground connection; Form the close lighttight photoelectrical coupler in dark chamber by light-emitting diode (LED1) and photo resistance (R15), after resistance (R13) current limliting, triode (V2) collection emitter-base bandgap grading connect, one end resistance (R13) is connected on the 1. pin of integrated circuit (IC2), the series loop that other end triode ground connection is constituted.The base loop of triode (V2) is connected the other end ground connection of electric capacity (C11) by diode (D6) and resistance (R12) back in parallel with electric capacity (C11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200087693U CN201134967Y (en) | 2007-11-16 | 2007-11-16 | General type electronic ballast |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200087693U CN201134967Y (en) | 2007-11-16 | 2007-11-16 | General type electronic ballast |
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| Publication Number | Publication Date |
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| CN201134967Y true CN201134967Y (en) | 2008-10-15 |
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| CNU2007200087693U Expired - Fee Related CN201134967Y (en) | 2007-11-16 | 2007-11-16 | General type electronic ballast |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101754548A (en) * | 2010-01-27 | 2010-06-23 | 林文献 | Electronic ballast |
| CN101772248A (en) * | 2010-03-04 | 2010-07-07 | 唐礼言 | General constant-power electronic ballast for high-intensity gas discharge lamp |
| CN102105013A (en) * | 2009-12-16 | 2011-06-22 | 奥斯兰姆有限公司 | Starting-assisting device, ballast and illumination device |
| CN103501571A (en) * | 2013-05-15 | 2014-01-08 | 郭振棠 | High-power electronic ballast capable of being used for ever |
| CN105813363A (en) * | 2014-12-31 | 2016-07-27 | 徐承金 | Integrated control chip and ballast device for effectively inhibiting pulse current and voltage |
| CN109245514A (en) * | 2018-08-07 | 2019-01-18 | 河北九英电气设备有限公司 | Intelligence In Baogang Kindergarten ultraviolet sterilization system |
| CN114583928A (en) * | 2022-05-06 | 2022-06-03 | 成都复锦功率半导体技术发展有限公司 | Power supply boosting drive circuit based on self-oscillation |
-
2007
- 2007-11-16 CN CNU2007200087693U patent/CN201134967Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105013A (en) * | 2009-12-16 | 2011-06-22 | 奥斯兰姆有限公司 | Starting-assisting device, ballast and illumination device |
| CN101754548A (en) * | 2010-01-27 | 2010-06-23 | 林文献 | Electronic ballast |
| CN101772248A (en) * | 2010-03-04 | 2010-07-07 | 唐礼言 | General constant-power electronic ballast for high-intensity gas discharge lamp |
| CN103501571A (en) * | 2013-05-15 | 2014-01-08 | 郭振棠 | High-power electronic ballast capable of being used for ever |
| CN105813363A (en) * | 2014-12-31 | 2016-07-27 | 徐承金 | Integrated control chip and ballast device for effectively inhibiting pulse current and voltage |
| CN109245514A (en) * | 2018-08-07 | 2019-01-18 | 河北九英电气设备有限公司 | Intelligence In Baogang Kindergarten ultraviolet sterilization system |
| CN114583928A (en) * | 2022-05-06 | 2022-06-03 | 成都复锦功率半导体技术发展有限公司 | Power supply boosting drive circuit based on self-oscillation |
| CN114583928B (en) * | 2022-05-06 | 2022-08-05 | 成都复锦功率半导体技术发展有限公司 | Power supply boosting drive circuit based on self-oscillation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20121116 |