CN201571249U - Intelligent numerical control energy-saving dimming electronic ballast - Google Patents
Intelligent numerical control energy-saving dimming electronic ballast Download PDFInfo
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- CN201571249U CN201571249U CN2009202634928U CN200920263492U CN201571249U CN 201571249 U CN201571249 U CN 201571249U CN 2009202634928 U CN2009202634928 U CN 2009202634928U CN 200920263492 U CN200920263492 U CN 200920263492U CN 201571249 U CN201571249 U CN 201571249U
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Abstract
The utility model designs an intelligent numerical control energy-saving dimming electronic ballast, which comprises the following circuits: a lightning stroke overvoltage protection circuit, an EMI (Electro-Magnetic Interference) filter circuit, a rectification filter circuit, an APFC (Active Power Factor Correction) circuit, a preheating swept-frequency ignition circuit, a half-bridge inverter circuit, an intelligent driving and resonant commutating integrated circuit IC2, a wrong connection prevention protection circuit, a dimming interface circuit, a dimming signal isolating circuit, a lamp tube end of life, gas leakage and shedding protection circuit, a main loop current switching circuit and an APFC circuit. The dimming electronic ballast has high power factor and low energy consumption and can not generate a stroboscopic phenomenon when dimming. Due to the fact that the input impedance of a dimming signal is high, the dimming uniformity is good in a centralized control mode, and the compatibility of the electronic ballast and various central integrated dimming controllers is greatly improved.
Description
Technical field
The utility model relates to the electric ballast field of fluorescent-lamp-use, particularly a kind of intelligent numerical control energy-saving dimming electric ballast.
Background technology
Some dimming scopes of dimming electronic ballast ubiquity of existing design are narrow; the defencive function imperfection; oneself power consumption is big; power factor is not high enough during high power; can not the favorable linearity light modulation; compatible fluorescent tube poor performance is not supported total light modulation, can not carry out shortcomings such as light modulation simultaneously to two or more fluorescent tubes.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of intelligent numerical control energy-saving dimming electric ballast; this ballast has higher reliability; dimming scope is big and have perfect defencive function, can carry out linearity, numerical control light modulation to many fluorescent tubes more than two or two simultaneously.The utility model is achieved through the following technical solutions:
A kind of intelligent numerical control energy-saving dimming electric ballast of the present utility model, its circuit comprises the thunderbolt overvoltage crowbar, the EMI filter circuit, current rectifying and wave filtering circuit, the APFC circuit, preheating frequency sweep firing circuit, half-bridge inversion circuit, intelligent drives and resonance change of current integrated circuit (IC) 2, anti-wrong protective circuit, dimming interface circuit, dim signal buffer circuit, lamp tube life end, the protective circuit of leaking gas, come off, main circuit current change-over circuit and APFC circuit; The thunderbolt overvoltage crowbar connects the EMI filter circuit; connect current rectifying and wave filtering circuit again; the direct current output of current rectifying and wave filtering circuit connects the APFC circuit; the APFC circuit connects the input of resonant circuit and the power end of IC2; frequency sweep preheating igniting circuit connects the frequency of oscillation input of IC2; the input in the same way of IC2 transport and placing device connects the dim signal buffer circuit; the output of half-bridge inversion circuit connects the reverse input end of IC2 transport and placing device; the half-bridge driven Enable Pin of IC2 connects the input of half-bridge inversion circuit; the output of half-bridge inversion circuit connects resonant circuit; dimming interface circuit connects the dim signal buffer circuit; the output of resonant circuit connects luminous lamp tube; the high-end MOSFET driving of IC2 drives with low side MOSFET and all is connected resonant circuit, and IC2 also is connected with boostrap circuit, and the dim signal buffer circuit also connects resonant circuit through protective circuit.
As preferably, described anti-wrong protective circuit comprises capacitor C 15, fast diode D8 and resistance R 31.
As preferably, described dim signal buffer circuit comprises integrated circuit (IC) 3, IC4 and peripheral cell.
As preferably, described preheating frequency sweep firing circuit comprises capacitor C 21, C23 and resistance R 34, R36, warm-up time, one end of capacitor C 21 and pre-heat frequency capacitor C 23 was connected to two frequency inputs of IC2, and the other end is connected the electronegative potential output of current rectifying and wave filtering circuit.
As preferably, described half-bridge inversion circuit comprises IC2, power amplifier Q2, Q3 and oscillation transformer L4 and peripheral circuit; IC2 connects oscillation transformer L4 by power amplifier Q2, Q3, and oscillation transformer L4 connects luminous lamp tube, and oscillation transformer L4 also connects the high-side driver test side of IC2.
As preferably, described lamp tube life end, the protective circuit of leaking gas, come off comprise triode Q5, Q6, Q7 and peripheral circuit.
As preferably, described main circuit current change-over circuit comprises transformer L5, triode Q8 and peripheral circuit.
As preferably, described IC2 internal structure comprises control circuit and drive circuit.
Intelligent numerical control energy-saving dimming electric ballast of the present utility model, possess following advantage is arranged: the power factor height, own loss is low, lamp tube service life is long, after coming off, fluorescent tube need not to restart ballast, big and the detection lamp tube life end of dimming scope, gas leakage and come off, can start and regulate a plurality of fluorescent tubes simultaneously, concentrate light modulation high conformity or the like, its advantage depends on its characteristic circuit, by integral control circuit IC1 is the APFC circuit that core is formed, and the intellectual frequency converting and preheating firing circuit formed for core of intelligent drives and resonance change of current integrated circuit (IC) 2, but guaranteeing that any dimming state is turned on light again starts all preheatings and lights a lamp, and have more the light modulation situation of change and give the adequate compensation heater current, effectively avoid filament to come to harm because of light modulation changes, improved the useful life of fluorescent tube widely, circuit of power factor correction can be in voltage ripple of power network ± 30% scope operate as normal, can not produce stroboscopic phenomenon fully during light modulation, dim signal after isolation processing, logical light dim signal buffer circuit, the impedance of dim signal input is increased, can not cause the light modulation consistency poor because of the problem of dim signal between the ballast under the concentrated brightness adjustment control mode, thereby improve the compatibility of this product greatly with the integrated light adjusting controller of various central authorities.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is an electrical principle frame diagram of the present utility model;
Fig. 2 is an electric circuit schematic diagram of the present utility model.
Embodiment
As depicted in figs. 1 and 2, a kind of intelligent numerical control energy-saving dimming electric ballast of the present utility model, its circuit comprises the thunderbolt overvoltage crowbar, the EMI filter circuit, current rectifying and wave filtering circuit, APFC circuit, preheating frequency sweep firing circuit, half-bridge inversion circuit, intelligent drives and resonance change of current integrated circuit (IC) 2, anti-wrong protective circuit, dimming interface circuit, the dim signal buffer circuit, lamp tube life end, the protective circuit of leaking gas, come off, main circuit current change-over circuit and APFC circuit; The AC220V AC power connects the EMI filter circuit behind the thunderbolt overvoltage crowbar; connect current rectifying and wave filtering circuit again; the direct current output of current rectifying and wave filtering circuit connects the APFC circuit; and through the input of APFC circuit connection resonant circuit and the power end of IC2; frequency sweep preheating igniting circuit connects the frequency of oscillation input of IC2; the input in the same way of IC2 transport and placing device connects the dim signal buffer circuit; the output of half-bridge inversion circuit connects the reverse input end of IC2 transport and placing device; the half-bridge driven Enable Pin of IC2 connects the input of half-bridge inversion circuit; the output of half-bridge inversion circuit connects resonant circuit; external 0-10V DC power supply connects the dim signal buffer circuit through dimming interface circuit; the output of resonant circuit connects luminous lamp tube; the high-end MOSFET driving of IC2 drives with low side MOSFET and all is connected resonant circuit; IC2 also is connected with boostrap circuit; the dim signal buffer circuit also connects resonant circuit through protective circuit, and the IC2 internal structure mainly comprises control circuit and drive circuit.
As shown in Figure 2; the thunderbolt overvoltage crowbar; EMI filter circuit and rectifier filter circuit comprise piezo-resistance RV, common mode inductance L1, Y2 capacitor C 3; safety capacitor C 1, C2; differential mode inductance L2, rectifier bridge D1-D4 and capacitor C 5, common mode inductance L1 front end piezo-resistance RV in parallel; one group coil is by the live wire L of protective tube Fuse connection AC220V AC power, and another group coil directly connects the zero line N of AC220V AC power.Common mode inductance L1 rear end safety capacitor C 1 in parallel, one group coil series connection differential mode inductance L2 connects with rectifier bridge one end input, another group coil series connection Y2 capacitor C 3 is connected with the ground wire GND of AC220V AC power and is connected with another input of rectifier bridge, Y2 capacitor C 3 also is connected with peripheral cell capacitor C 4 one ends of dim signal buffer circuit simultaneously, and the low-voltage end of capacitor C 4 other end people having the same aspiration and interest optical signal isolation circuit connects.The output-parallel filter capacitor C5 of rectifier bridge.
The APFC circuit comprises IC1, boost inductance L3, power amplifier Q1, resistance R 4, R5, R6, R7, R8, R12, R13, R14, R15, R16, R19 capacitor C 6, C7, C9; IC1 is core parts of forming the APFC circuit, after the former limit of boost inductance L3 is connected on the output of current rectifying and wave filtering circuit, connect the drain electrode of power amplifier Q1 again, the grid of power amplifier Q1 connects the control end of integral control circuit IC1, the source electrode of power amplifier Q1 is connected to the cold end of rectifier bridge by resistance R 11, the drain electrode of power amplifier Q1 connects the former limit output of boost inductance L3 and the positive pole of booster diode D20, resistance R 4, R5, R6, R7 and capacitor C 9 are connected with 3 pin of IC1, resistance R 12, R13, R14, R15 is connected with 1 pin of IC1, and there is error amplifier IC1 inside, quadrant multiplier, logical circuit, output driving circuit etc.
The input of dim signal buffer circuit connects anti-wrong circuit, connect DC power supply 0-10V by anti-wrong circuit again, comprise voltage comparator integrated circuit (IC) 3, IC4, filter capacitor C4 and respective peripheral element, wherein capacitor C 16 is connected with the auxiliary winding of boost inductance L3, by forming voltage comparator integrated circuit (IC) 3 power supply circuits after diode D6 voltage stabilizing, the diode D7 rectification.Preheating frequency sweep firing circuit comprises capacitor C 21, C23 resistance R 34, R36, and warm-up time, one end of capacitor C 21 and pre-heat frequency capacitor C 23 was connected to two frequency inputs of IC2, and the other end is connected the electronegative potential output of current rectifying and wave filtering circuit.Half-bridge inversion circuit comprises IC2, power amplifier Q2, Q3 and oscillation transformer L4 and peripheral circuit; IC2 connects oscillation transformer L4 by power amplifier Q2, Q3, and oscillation transformer L4 connects luminous lamp tube, and oscillation transformer L4 also connects the high-side driver test side of IC2.Need not to restart ballast after fluorescent tube comes off, described lamp tube life end, the protective circuit of leaking gas, come off comprise triode Q5, Q6, Q7 and correspondent peripheral circuit.The main circuit current change-over circuit comprises transformer L5, triode Q8 and correspondent peripheral circuit.
The electric circuit operation principle is as follows: the 220V electric main is by 2 pin and the input of 3 pin of JP1, through Fuse, RV, L1, C1, L2, C2, D1-D4, behind the C5 filter rectification level and smooth direct current is added by IC1, L3, Q1, D20, C38 is the APFC circuit that center part is formed, power output is 35W, pressing in C38 two ends output constant DC is 405V, input source current total harmonic distortion is lower than 10%, 2 subharmonic and 1～39 odd harmonic all satisfy GB/15144 and GB17625.1, and the line power factor all meets GB17743 up to the conduction of 0.98. electromagnetism with disturbing EMI/EMC.
The series resonant circuit that half-bridge inversion circuit that IC2 and peripheral cell are formed and LC form.The start-up circuit of integrated circuit (IC) 1 and IC2 comprises R20, C8, C11, Q9, D24 and R74, R75, R76, R77.The power supply of IC2 and IC1 adopts and separates first reprocessing, electric ballast IC2 after energising at first starts, and IC1 just starts after IC2 starts, and IC2 burn out or LC series resonance failure of oscillation after, the IC1 power supply is cut off, thereby the APFC power factor correction circuit is quit work.When electric ballast enters normal operating conditions, high frequency square wave pulse voltage on the IC2 pin is behind C36 and D24, C8 voltage regulation filtering, make the conducting of triode Q9 positively biased, put on 8 pin of IC1 through Q9, R20, put on 12 pin of IC2 through Q9, R74, for IC1 and IC2 provide the operate as normal supply voltage.
Intelligent numerical control energy-saving dimming electric ballast is divided into three steps to the startup of fluorescent lamp, i.e. lamp cathode preheating frequency sweep, igniting and the normal burning-point of lamp.IC2 output filament pre-heating frequency is by R34 and C23 decision, and preheat curent to filament pre-heating, makes lamp igniting but can not produce sufficiently high voltage in lamp tube ends by filament.Determine by C21 the warm-up time of filament.After finishing warm-up time, switching frequency changes normal working frequency over to by the excessive phase, and the frequency of operate as normal is by R36 and C23 decision.During the switching frequency skew, serve as the preheat circuit that the main resonant circuit of forming and C41, C42 form with L4, C34, C35 element, produce sufficiently high pulse voltage lamp is started.
With IC3 and IC4 is the main dim signal buffer circuit of forming.1 pin and the 2 pin input of 0～10V dc level signal by dim signal interface circuit JP3, the dim signal after the IC4 isolation processing is transferred to the base stage of triode Q4 again after IC3 inside and peripheral cell are handled.After this processing of circuit, the dim signal of this intelligent numerical control energy-saving dimming electric ballast is imported to such an extent that impedance is increased, not causing the light modulation consistency poor because of the problem of dim signal between the ballast under the concentrated control methods, improved the compatibility of product and various central integrated manipulators greatly.
7 pin (OPIN+) the internal arithmetic amplifier of IC2 is input in the same way, the voltage of this pin is controlled the Q4 conducting degree of depth by 0～10V dc level signal of input after changing, thereby adjust voltage from the D18 negative pole, changing power amplifier Q3 grid voltage through resistance R 73 again changes, reach the purpose of control lamp current, the variation of D18 cathode voltage serves as that the main branch hydraulic circuit of forming obtains with R54, R55, R56, R57.Inductance L 5, resistance R 49, R50, R51, diode D16 be as detecting main circuit current, and be that voltage signal is through 6 pin (OPIN-) the input internal arithmetic amplifier reverse input end of R46 by IC2 with current conversion.The output of the 5 pin internal arithmetic amplifiers of IC2 is connected with 4 pin (RING) of IC2 with resistance R 37 by diode D15.Before the lamp igniting, the voltage on 6 pin of IC2 is in low level always, and the magnitude of voltage on 7 pin of IC2 remains on principle and divides on the voltage of hydraulic circuit, so, the 5 pin internal arithmetic amplifier input terminal output high level of IC2.Along with the igniting after the lamp preheating, the branch hydraulic circuit that resistance R 40, R41, R42, R43 and R44 form, make triode Q8 anti-inclined to one side, the average voltage at resistance R 48 two ends is increased, and operational amplifier is then fulfiled lamp closed-loop control effect to lamp current during light in normal stationary point.The change of 0～10V dc level signal size, the 7 pin change in voltage of the IC2 of chain reaction, the size of average lamp current obtain adjusting, thus control power output and intensity of light.
Input too high voltages protective circuit and lightning prevention circuit are made up of Fuse, RV, C1, C2.Fluorescent tube come off restart, lamp tube air leaking, end of Lamp life protective circuit comprise resistance R 80, R81, R82, R83, diode D26, D27, triode Q5, Q6, Q7 and peripheral cell are formed.
This intelligent numerical control energy-saving dimming electric ballast of forming by various special circuits, adopt intellectual frequency converting and preheating circuit, guarantee the startup of turning on light again of any dimming state, all can preheating light a lamp, and give the adequate compensation heater current according to the light modulation situation of change, effectively avoid filament to come to harm, improved the useful life of fluorescent tube greatly because of light modulation changes.Adopt the design of numerical control drive integrated circult, make the output of full electronic numerical control electric ballast luminous flux constant, whole system has Ultra-High Efficiency, and the 220V type is up to 87～90% conversion efficiency, and the electric ballast own loss is very low.Complete when bright luminous flux be output as 100%.The APFC circuit can not produce stroboscopic phenomenon during light modulation fully in voltage ripple of power network ± 30%.Dimming scope can reach 100%～10%.The series loop that ballast and fluorescent tube constitute, its operating frequency has effectively been avoided the infra-red remote control frequency band at 50KHz～100KHz.Power factor during minimum brightness 〉=0.98, power factor during maximum brightness 〉=0.96.The lamp current crest is than CF value≤1.6, and fluorescent tube is difficult for blackhead, and switch life (was opened, closed the switch experiment condition in 30 seconds) up to 100,000 times in 30 seconds.This intelligent numerical control energy-saving dimming electric ballast has perfect protection tube circuit such as overvoltage protection, and lamp tube life end, lamp tube air leaking, fluorescent tube come off, unloaded or the like.
The foregoing description; it is an example of the present utility model; be not to be used for limiting enforcement of the present utility model and interest field, all or technical schemes of being equal to identical with the described content of the utility model claim all should be included in the utility model protection range.
Claims (8)
1. intelligent numerical control energy-saving dimming electric ballast, it is characterized in that: its circuit comprises the thunderbolt overvoltage crowbar, the EMI filter circuit, current rectifying and wave filtering circuit, the APFC circuit, preheating frequency sweep firing circuit, half-bridge inversion circuit, intelligent drives and resonance change of current integrated circuit (IC) 2, anti-wrong protective circuit, dimming interface circuit, dim signal buffer circuit, lamp tube life end, the protective circuit of leaking gas, come off, main circuit current change-over circuit and APFC circuit; The thunderbolt overvoltage crowbar connects the EMI filter circuit; connect current rectifying and wave filtering circuit again; the direct current output of current rectifying and wave filtering circuit connects the APFC circuit; the APFC circuit connects the input of resonant circuit and the power end of IC2; frequency sweep preheating igniting circuit connects the frequency of oscillation input of IC2; the input in the same way of IC2 transport and placing device connects the dim signal buffer circuit; the output of half-bridge inversion circuit connects the reverse input end of IC2 transport and placing device; the half-bridge driven Enable Pin of IC2 connects the input of half-bridge inversion circuit; the output of half-bridge inversion circuit connects resonant circuit; dimming interface circuit connects the dim signal buffer circuit; the output of resonant circuit connects luminous lamp tube; the high-end MOSFET driving of IC2 drives with low side MOSFET and all is connected resonant circuit, and IC2 also is connected with boostrap circuit, and the dim signal buffer circuit also connects resonant circuit through protective circuit.
2. intelligent numerical control energy-saving dimming electric ballast according to claim 1 is characterized in that: described anti-wrong protective circuit comprises capacitor C 15, fast diode D8 and resistance R 31.
3. intelligent numerical control energy-saving dimming electric ballast according to claim 1 is characterized in that: described dim signal buffer circuit comprises integrated circuit (IC) 3, IC4 and peripheral cell.
4. intelligent numerical control energy-saving dimming electric ballast according to claim 1, it is characterized in that: described preheating frequency sweep firing circuit comprises capacitor C 21, C23 and resistance R 34, R36, warm-up time, one end of capacitor C 21 and pre-heat frequency capacitor C 23 was connected to two frequency inputs of IC2, and the other end is connected the electronegative potential output of current rectifying and wave filtering circuit.
5. intelligent numerical control energy-saving dimming electric ballast according to claim 1, it is characterized in that: described half-bridge inversion circuit comprises IC2, power amplifier Q2, Q3 and oscillation transformer L4 and peripheral circuit; IC2 connects oscillation transformer L4 by power amplifier Q2, Q3, and oscillation transformer L4 connects luminous lamp tube, and oscillation transformer L4 also connects the high-side driver test side of IC2.
6. intelligent numerical control energy-saving dimming electric ballast according to claim 1 is characterized in that: described lamp tube life end, the protective circuit of leaking gas, come off comprise triode Q5, Q6, Q7 and peripheral circuit.
7. intelligent numerical control energy-saving dimming electric ballast according to claim 1 is characterized in that: described main circuit current change-over circuit comprises transformer L5, triode Q8 and peripheral circuit.
8. intelligent numerical control energy-saving dimming electric ballast according to claim 1 is characterized in that: described IC2 internal structure comprises control circuit and drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202634928U CN201571249U (en) | 2009-11-27 | 2009-11-27 | Intelligent numerical control energy-saving dimming electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202634928U CN201571249U (en) | 2009-11-27 | 2009-11-27 | Intelligent numerical control energy-saving dimming electronic ballast |
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| Publication Number | Publication Date |
|---|---|
| CN201571249U true CN201571249U (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202634928U Expired - Fee Related CN201571249U (en) | 2009-11-27 | 2009-11-27 | Intelligent numerical control energy-saving dimming electronic ballast |
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Cited By (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 |
| CN111988880A (en) * | 2020-08-18 | 2020-11-24 | 浙江宇光照明科技有限公司 | Constant-power ballast circuit with dimming function and control method |
-
2009
- 2009-11-27 CN CN2009202634928U patent/CN201571249U/en not_active Expired - Fee Related
Cited By (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 |
| CN111988880A (en) * | 2020-08-18 | 2020-11-24 | 浙江宇光照明科技有限公司 | Constant-power ballast circuit with dimming function and control method |
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| Date | Code | Title | Description |
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| 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: 20100901 Termination date: 20151127 |