CN1215972A - Electronic ballast for high-pressure discharge lamp - Google Patents
Electronic ballast for high-pressure discharge lamp Download PDFInfo
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- CN1215972A CN1215972A CN 98121619 CN98121619A CN1215972A CN 1215972 A CN1215972 A CN 1215972A CN 98121619 CN98121619 CN 98121619 CN 98121619 A CN98121619 A CN 98121619A CN 1215972 A CN1215972 A CN 1215972A
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Abstract
An electronic ballast for high-pressure discharging lamp is composed of casing and circuit. Said circuit includes rectifier, corrector, DC/AC converter, load circuit, protecting circuit and trigger. Said DC/AC converter is self-excited soft switch one for higher reliability, lower cost and no influence from power supply and load.
Description
The present invention relates to high-pressure discharge lamp, particularly the electric ballast of high-pressure discharge lamp.
At present, the electric ballast of the high-pressure discharge lamp on the market (as sodium vapor lamp etc.), generally obtain circuit and trigger is formed by rectifier, adjuster, DC/AC inverter, load circuit, guarantor, wherein DC/AC inverter is generally the separated exciting hard-switching converter, this converter has following a few point defect: 1, the opening of switch, turn-off power loss are big, and power consumption can produce a large amount of heats, temperature rise, poor reliability; 2, need miscellaneous part to trigger, so element is many, simultaneously, because temperature rise requires height to element, so, the cost height; 3, be subjected to the influence of power supply and load.Exactly because above-mentioned some reason, at present, the electric ballast of high-pressure discharge lamp also can't replace inductance type ballast fully.
The objective of the invention is: provide a kind of temperature rise little, good reliability, cost is low, is not subjected to the electronic ballast for high-pressure discharge lamp of power supply and load effect.
For achieving the above object, solution of the present invention is: it is made up of shell and circuit part, and circuit part comprises that rectifier, adjuster, DC/AC inverter, load circuit, guarantor obtain circuit, trigger; DC/AC inverter is the soft switch DC/AC converter of auto-excitation type, and its positive pole connects with the output of adjuster, and its output connects with the input of load circuit; Soft switch DC/the AC converter of auto-excitation type is anodal drain electrode and the resistance R 1 that connects switch transistor T 2, another termination capacitor C 7 of resistance R 1, anode and the diode D11 of diode D8, another termination capacitor C 8 of diode D11, resistance R 5, R6, another termination switch transistor T 3 grids and diode pair D7 of resistance R 5, capacitor C 8 another termination inductance L 7, inductance L 7, resistance R 8, diode D7 and capacitor C 7 other end ground connection; The source electrode of switch transistor T 2 connects tap place of autotransformer B3: the drain electrode of diode D6, resistance R 4, inductance L 6, resistance R 2 and switch transistor T 3 connects, grid connecting resistance R3, the diode D6 of switch transistor T 2, the other end connecting resistance R4 of resistance R 3, capacitor C 7, another termination inductance L 6 of capacitor C 7, the source ground of T3.
Owing to adopted the soft switch DC/AC converter of auto-excitation type in the electric ballast of the present invention, therefore had the following advantages: 1, the opening of switch, turn-off power loss are little.Power consumption is few, and temperature rise is little, so, good reliability; 2, owing to be auto-excitation type, need not trigger by other elements, element is few, and is because soft switch temperature rise is little, less demanding to the element of whole electric ballast again, so.Cost is low; 3, be not subjected to power supply and load effect.
Below in conjunction with accompanying drawing, the embodiment of the invention is described in further detail.
Fig. 1 is the circuit theory diagrams of circuit part of the present invention.
Fig. 2 is the circuit block diagram of circuit part of the present invention.
Fig. 3 is for importing power supply by electric current, voltage oscillogram behind the rectifier.
Fig. 4 is for importing power supply by electric current, voltage oscillogram behind the power factor corrector.
Fig. 5 is a 250W high-pressure sodium lamp lamp tube ends voltage and current oscillogram.
Fig. 6 is the structural representation of electric ballast of the present invention.
As shown in Figure 1 and Figure 2, circuit part of the present invention by filter 1, rectifier 2, adjuster 3, the soft switch DC/AC converter 4 of auto-excitation type, load circuit 5, the guarantor obtains circuit 6, trigger 7 is formed.Wherein adjuster 3 is a power factor corrector, and load circuit 5 is advanced version or retarded type load circuit.Soft switch DC/the AC converter of auto-excitation type (4) is anodal drain electrode and the resistance R 1 that connects switch transistor T 2, another termination capacitor C 7 of resistance R 1, anode and the diode D11 of diode D8, another termination capacitor C 8 of diode D11, resistance R 5, R6, another termination switch transistor T 3 grids and diode pair D7 of resistance R 5, capacitor C 8 another termination inductance L 7, inductance L 7, resistance R 8, diode D7 and capacitor C 7 other end ground connection; The river flowing from Guizhou Province through Hunan into Dongting Lake utmost point of switch transistor T 2 connects tap place of autotransformer B3; The drain electrode of diode D6, resistance R 4, inductance L 6, resistance R 2 and switch transistor T 3 connects, grid connecting resistance R3, the diode D6 of switch transistor T 2, the other end connecting resistance R4 of resistance R 3, capacitor C 7, another termination inductance L 6 of capacitor C 7, the source ground of T3.Load circuit 5 is for connecing autotransformer B3 two ends by capacitor C 11 and C12 respectively, another termination high-pressure discharge lamp NG of capacitor C 11, and another termination reactor of discharge lamp NG B4 upper end, lower end ground connection, and join with capacitor C 10.
220V, 50HZ civil power connect filter 1 through fuse F, the input capacitor C1 two ends of filter, and after C1, L1, L2, C2, C3, C4 filtering, (D1～D4) is rectified into pulsating direct current to deliver to bridge rectifier 2 by the C4 two ends.If the soft switch DC/AC converter 4 of auto-excitation type is directly delivered in this pulsating direct current, the waveform of surveying power supply input current and voltage is analyzed and experiment knows that the circuit gross power is between 0.6～0.7 for some reason at this moment as shown in Figure 3.Input current voltage waveform after the calibrated device of pulsating dc voltages 3 of 2 outputs is proofreaied and correct as shown in Figure 4, the circuit total power factor is 0.985～0.998.
Adjuster 3 is L3, L4, IC, T1, D5, C5, C6, R8, R9, R10 form power factor corrector, wherein chip IC can be used KA7524,6560, MC33261, MC3362, MC34261, MC34262, UC1854, UC1852 ... all can, and the using method of various IC chips, see its introduction.Press the specification requirement of IC chip, input supply voltage is when 90V～270V range, adjuster 3 output voltage V C5 (capacitor C5 two ends) are certain stationary value, for example be 400V, as the case may be, can be chosen in the following appropriate value of 400V, but after parameter chooses, when input supply voltage changed, the output of power factor corrector 3 was its set point value just.Say that in this sense power factor corrector can be considered stabilized voltage power supply.By power factor corrector output voltage V C5 supply soft switch DC/AC converter 4 of auto-excitation type and output loading loop 5, they will not be subjected to the influence of power-supply fluctuation.
The following describes the operation principle of the soft switch DC/AC of auto-excitation type converter.Field effect transistor T2, T3, autotransformer B3, capacitor C10 constitute the main circuit of converter 4, and load circuit 5 can be converted the major loop analysis.Resistor R 1, R2, diode D8, D11, capacitor C11 are the drive circuit of converter 4, diode D9, D10 join in T2, the T3, also can be external.Two pipe D6, D7 are that voltage-stabiliser tube is right, and T2, T3 are worked the effect that obtains of protecting.Beginning T2, T3 end, and the stable DC voltage VC5 anode that power factor corrector 3 provides to capacitor C10 charging, provides power supply to prepare through resistor R 1, R2, diode D8 autotransformer B3 during for switch transistor T 3 conductings.The VC5 anode charges to capacitor C7 through R1 simultaneously, when C7 goes up the voltage VC7 〉=32V left and right sides, bidirectional trigger diode D11 is open-minded, capacitor C7 goes up voltage VC7 and is added on the grid of field effect transistor T3 through D11, resistor R 5, R6, as long as during the threshold voltage VG3 of this voltage 〉=T3, the T3 conducting, the electric energy that is stored among the capacitor C10 discharges through transformer B3, T3, the part of this electric energy becomes heat energy and consumes on resistance in circuit, the magnetic energy that another part is converted into transformer B3 stores.Because the positive feedback effect of inductance L 7 will be kept the T3 conducting, and the induced voltage on the L6 will be kept T2 and end.But the induced current of working as the magnetic induction density B 10 of transformer B3 will feed back to power supply VC5 by D9.D9 conduction period is about the leakage of field effect transistor T2, source voltage VTZDS=-2 volt.After T3 ends, magnetic induction Bm will withdraw from the saturation region and produce magnetic strength in the other direction, and the positive feedback effect because of the induced voltage VL6 of L6 makes the T2 conducting, and the electric current commutation is got back to power supply VC5 negative terminal from the VC5 anode through T2, transformer B3, capacitor C10.In the meantime, B3 stores magnetic energy, the C10 store electrical energy, and power supply also provides electric energy by B3 to load simultaneously.After the T2 conducting, because positive feedback effect, VL6 keeps the T2 conducting, and VL7 keeps T3 and ends.Be noted that at T3 by moment, magnetic induction is anti-phase instantaneous, VL6 can make the T2 conducting, consider the spike that has of opening T2 when magnetic induction is saturated, can suitably select capacitor C8 (or C9) resistor R 3, R4 (or R5, R6), after making magnetic induction withdraw from the saturation region to enter linear zone, open T2 (or T3) again, thereby reduce the spike interference signal widely.Same magnetic strength-the Bm that works as enters the magnetic saturation district, and causes T2 to end.After T2 ended, because the continuity of electric current, diode D10 was open-minded, about the leakage of T3, source voltage VP3DS=-2.After T2 ends, magnetic induction-Bm will withdraw from the magnetic saturation district, and positive feedback will make the T3 conducting, and T2 ends, and finish direct current DC and become the conversion that exchanges AC.Go round and begin again like this, move in circles.As seen from the above analysis, T2, T3 open in the nearly no-voltage of VDS.T2, T3 are soft switches thus, again because of the positive feedback self-excitation, and do not need other triggering signal, so be called the soft switch DC/AC of auto-excitation type converter.Benefit is: 1. open, turn-off power loss is few, the operating frequency height; 2. spike is little during switch, weakens interference source; 3. can select the lower switching tube of VDS; 4. the auto-excitation type control element is few, reduces cost.
Reactor B4, capacitor C11, high-pressure discharge lamp NG form advanced version load circuit 5, also can remove C11 and become retarded type load circuit 5.Discharge lamp can be high-pressure sodium lamp, Metal halogen lamp or mercury lamp, and to dissimilar lamps, circuit parameter is different, and parameter designing is unreasonable, and the superiority performance of circuit is not come out.
Function relation curve when the technical parameter of its principle and actual measurement and temperature, illumination and change in voltage being described below in conjunction with the 250W high-pressure sodium lamp.The function characteristic curve is divided into line power again, and factor is 0.65 and 0.998 A shelves and B shelves two classes.
High-pressure sodium lamp NG has the negative resistance voltage-current characteristic, must adapted current-limiting apparatus ability safe and stable operation.Reactor B4 sets up for finishing this task, but reactor is an inductance element, nearly 90 ° of electric current lagging voltage, about 3～4 ° of the electric current leading voltage of sodium vapor lamp NG, after reactor B4 series connection, output loop 5 still belongs to inductive load, after the current hysteresis, voltage is leading, add capacitor C11, phase place is compensated, and can make the electric current that flows through sodium vapor lamp consistent with the voltage of both ends of lamp position, power factor is " 1 ", as shown in Figure 5.
Know by Fig. 5:
1. lamp current is identical with lamp voltage waveform, and zero passage commutation simultaneously reaches extreme value simultaneously.Be made up of direction opposite exponential curve AB and BC in the one-period, similar sine wave, peak factor are Vm/e=1.280, than the peak factor of sine wave
Low 1.108 times.Therefore one second area of volt of the present invention is bigger 1.108 times than sinusoidal wave.The peak factor of Inductive ballast is 1.7 (actual taller) by standard.So electrical efficiency of the present invention is higher 1.328 times than Inductive ballast than 1.108 times of sinusoidal wave height, this shows that electrothermal efficiency of the present invention and electrical efficiency all are better than Inductive ballast.
2. Inductive ballast is operated in 50HZ power frequency electricity, during sodium vapor lamp work, be through once catching fire, and ionization increases, the process of decay, extinguish, zero passage being caught fire again, i.e. current over-zero commutation, light extinguishes, and need catch fire again, catches fire twice again weekly, so stroboscopic is arranged.Operating frequency height of the present invention, electric power polarity changes fast, and the variation of discharge process does not catch up with the variation of electric power polarity in the fluorescent tube.When electric power polarity changes, have little time deionization, discharge space remains very high degree of ionization, thereby light no longer takes place extinguishes and the process of current over-zero to catching fire again.Charged particle changes with electric power polarity at discharge space, and vibration makes electronics and ion prolong greatly in the actual distance and the time of staying of discharge space process back and forth, the high effect of the electricity phenomenal growth of electronics, thus improved electrical efficiency.Under the effect of high-frequency electric field, electrode is subjected to positive ion bombardment little, and electrode emission material consumption is few, thus prolonging lamp tube service life.
Circuits for triggering are made of block diagram 7 and inductance L 10.L10 is the tap of reactor L9, and tap position is decided by the lamp type parameter request, to the fluorescent tube of different size, and concrete parameter difference.In fact any type of pulse generator can.Along being nanosecond, watt level, decide on trigger tube power before and after the pulse, the firing voltage of high-pressure sodium lamp is generally at 1.8～4.5KV.Block diagram 6 is a locking pulse, and gas one punctures in fluorescent tube, and trigger 7 should quit work.After lamp catches fire and lights, in the circuit electric current must be arranged, isolating sampling current is locking signal 6, and trigger 7 is quit work, and electric light is in running, and electric current is continuous, and locking signal exists always, and trigger 7 is blocked always.If there are special circumstances to take place, as one second of instantaneous power failure, lamp is from going out, and locking pulse disappears, and trigger impulse produces again, treats that sodium vapor lamp cools off deionization slightly, and about 1.5 to 2 minutes, lamp will restart work.This triggering lockout circuit is independently, the interference that not changed by other parameter of circuit, and it does not disturb other circuit yet, helps the stable operation of lamp.
Measured data shows, to the different fluorescent tubes of same model, start-up time is about 1.5～3.0 minutes, is meant that 80% of illumination Da Eding after lamp is lighted is as the criterion so-called start-up time.Than Inductive ballast need 6～8 minutes fast 2.6～4 times.Shorten the time that carries out the transition to arc discharge in the start-up course by glow discharge greatly.The electronics source of glow discharge is main by the anticathode bombardment of cation, and bombardment time shortens 2.6～4 times, makes cathode emission material consumption few.Under the high-frequency electric field effect, the electronics source is not just depended alone and is produced electronics from bombarding cathode during the glow discharge in addition, and high-frequency electric field also will cause gas breakdown, and the target emissive material more has the effect that obtains of protecting like this.Sodium vapor lamp monograph document points out, Inductive ballast mainly is that glow discharge time power factor long and current waveform is low when starting to the unfavorable factor of fluorescent tube.The present invention obtains reasonable solution to these two problems, as mentioned above.
Introduce structure and heat dissipation problem below again.
Electronic ballast for high-pressure discharge lamp is generally worked in the open, stand exposing to wind and rain year in year out, exposes to the sun and rain, essential sealing, leakproof, protection against the tide, antirust, antifog, anti-lightning strike, anti-tampering.Particularly electric ballast itself is exactly the oscillator of a high-frequency high-power, and every fluorescent tube all is a transmit antennas, designs badly, and technology is not tight, will seriously pollute power utilization environment.On the other hand, electric ballast is again a natural cooling, and after the sealing, heat is difficult for shedding, the temperature height will cause the unreliable of ballast, this is a pair of contradiction.Be used in wide environment, the temperature difference is big in addition, and it is poor to power, and ballast is proposed harsh more requirement.
The present invention addresses these problems like this, all electronic devices and components are installed in the square printed board of a block length, again printed board is placed in the shell 8 of airtight container, as shown in Figure 6, in shell 8, fill up liquid dielectric 10 (stay a fixed gap, fill agent and expand with heat and contract with cold) in case add, circuit part 9 is fully immersed in this liquid dielectric 10, require the thermal capacity of liquid dielectric 10 big, good heat-transfer, dielectric strength height.Because the shielding of aluminium closed container and the tight filtering of input capacitance, frequency electromagnetic waves can only be radiated the electricity consumption space by output line and sodium vapor lamp, but radiation is inversely proportional to distance 4 powers, therefore environmental pollution is little, the operating frequency of while correct design electric ballast, make its first-harmonic and the harmonic wave below 11 times away from the Voice ﹠ Video zone, add strict active power filtering (PFC) and passive filtering (RF1) measure, be not difficult to stop environmental pollution.After such design and structure treatment, not only satisfy above-mentioned requirements technically, and on price, A shelves cost is lower than the Inductive ballast cost, B shelves cost is a little more than the Inductive ballast cost.Use the saving electricity charge in a year enough to purchase the ballast price.No matter be the performance of A shelves or B shelves electric ballast, all be better than Inductive ballast.
Following technical data is decided after moving through several successive.Daytime, working voltage was 250V, night working voltage after pressure regulation, between 1～4 up to 270V, during load running input voltage up to 290V about.
Table one important technological parameters
| Sequence number | Project name | Unit | Parameter | Remarks |
| ????1 | Specified input apparent power | ??VA | ?????????262 | |
| ????2 | Nominal load power | ???W | ?????????250 | |
| ????3 | The rated supply voltage frequency | ??VHZ | ??????220V50/60 | |
| ????4 | Specified circuit input current | ???A | ????????≤1.12 | |
| ????5 | The circuit total power factor | ????0.985≤X≤0.998 | ||
| ????6 | Triple-frequency harmonics content | Meet IEC | ||
| ????7 | The mains fluctuations scope | ???V | ??????-27％～+23％ | |
| ????8 | Start-up time | ??Min | ????????1.5～3.5 | |
| ????9 | Restart the time | ??Min | ??????????≤2 | |
| ???10 | Temperature rise | ??℃ | ??????????≤30 | |
| ???11 | Operating ambient temperature | ??℃ | ???????-40～+50 | |
| ???12 | Weight | ??KG | ?????????≤1 | |
| ???13 | Work running time | ???H | Arbitrarily | |
| ???14 | The no-load running time | ???H | Arbitrarily | |
| ???15 | The short circuit operation time | ??MIN | ?????????≤30 | |
| ???16 | Volume | ??cm 3 | ?????????≤612 |
Table two supply voltage 220V, 250W sodium vapor lamp observed temperature, illumination and time relationship
Annotate: 1, T
In---the element surface temperature that heating is maximum, T
Outward---case surface temperature, Δ T---internal and external temperature, Ta---ambient temperature, T
Q---humidity, V---supply voltage, β---illumination, unit: lm
| ?????T | ??n.min | ??9.20 | ??9.30 | ??9.40 | ??9.50 | ??10.00 | ??10.10 | ??10.20 | ??10.30 |
| ????T In | ???℃ | ???25 | ??29.5 | ??32.6 | ??35.5 | ??38.5 | ??40.4 | ???42 | ??43.4 |
| ????T Outward | ???℃ | ??25.5 | ??27.3 | ??29.2 | ??30.5 | ???33 | ??35.4 | ??36.4 | ??37.5 |
| ???ΔT | ???℃ | ??-0.5 | ???2.3 | ???3.4 | ????5 | ??5.5 | ????5 | ???5.6 | ???5.9 |
| ????Ta | ???℃ | ???25 | ??25.6 | ??25.6 | ??25.6 | ??25.6 | ??25.6 | ??25.6 | ??25.6 |
| ????T Q | ???％ | ???82 | ???82 | ???78 | ???78 | ???78 | ???78 | ???78 | ???78 |
| ????Vx | ????V | ??220 | ???220 | ???220 | ??220 | ??220 | ??220 | ??220 | ??220 |
| ????β | ???lm | ???0 | ??5900 | ??6000 | ??6000 | ??6000 | ??6000 | ??6000 | ??6000 |
| ?????T | ??n.min | ?10.40 | ??10.50 | ??11.00 | ??11.20 | ??11.40 | ??15.45 | ??16.20 | ??17.00 |
| ????T In | ???℃ | ??44.5 | ??45.7 | ??46.6 | ??48.2 | ??49.5 | ??52.7 | ??52.8 | ???53 |
| ????T Outward | ???℃ | ??38.4 | ??39.1 | ??38.6 | ??40.6 | ??40.5 | ??44.5 | ??44.5 | ??44.2 |
| ???ΔT | ???℃ | ??6.1 | ???6.6 | ????7 | ???7.6 | ????9 | ???8.2 | ???8.3 | ???8.7 |
| ????Ta | ???℃ | ??25.6 | ??25.6 | ??25.6 | ??25.6 | ??25.8 | ???26 | ???26 | ???26 |
| ????T Q | ???％ | ???78 | ???78 | ???82 | ???82 | ???82 | ???82 | ???73 | ???73 |
| ????Vx | ????V | ???220 | ???220 | ??220 | ???220 | ??220 | ??220 | ??220 | ??220 |
| ????β | ???lm | ??6000 | ??6000 | ??6000 | ??6000 | ??6000 | ??6000 | ??6000 | ??6000 |
| ???T | ??n.min | ?19.00 | ??22.00 |
| ???T In | ???℃ | ?52.9 | ???53 |
| ???T Outward | ???℃ | ?44.2 | ??44.3 |
| ??ΔT | ???℃ | ??8.7 | ???8.7 |
| ???Ta | ???℃ | ???26 | ???26 |
| ???T Q | ???％ | ???73 | ???73 |
| ???V X | ???V | ??220 | ??220 |
| ???β | ???lm | ??6000 |
2, ballast volume 5.5 * 6.2 * 12=612cm
3
3, temperature rise is T
In-Ta=53-26=27 (℃)
4, running time: 9.20～22.00
5, under the same conditions, during inferior bright Inductive ballast, illumination is 5500lm, than the low 500lm of electric ballast.
During table three circuit total power factor 0.65, the relation of illuminations actually measured and input voltage
| ?V | ??150 | ??155 | ??160 | ??165 | ??170 | ??175 | ??180 | ??185 | ??190 |
| ?β | ?1300 | ?1600 | ?1900 | ?2200 | ?2700 | ?3000 | ?3300 | ?3500 | ?3900 |
| ?V | ??195 | ??200 | ??205 | ??210 | ??215 | ??220 | ??225 | ??230 | ??235 |
| ?β | ?4200 | ?4500 | ?4900 | ?5200 | ?5500 | ?5900 | ?6300 | ?6700 | ?7200 |
| ?V | ??240 | ??245 | ??250 | ||||||
| ?β | ?7700 | ?8000 | ?8300 | ||||||
During table four circuit total power factor 0.998, the relation of illumination, temperature and voltage
| ????T | ??8.30 | ??11.30 | ??14.30 | ??17.20 | ??21.00 | ??0.00 | ??2.00 | ??5.00 | ??8.00 |
| ???T In | ???28 | ??47.5 | ??47.9 | ??48.5 | ??48.2 | ??48.1 | ??48.1 | ??48.1 | ??48.1 |
| ???T Outward | ???28 | ??39.5 | ??39.8 | ???40 | ??40.2 | ???40 | ??40.2 | ??40.1 | ???40 |
| ??ΔT | ???0 | ????8 | ???8.1 | ???8.1 | ????8 | ???8.1 | ???7.9 | ????8 | ???8.1 |
| ???Ta | ???28 | ??28.5 | ??28.7 | ??28.9 | ???29 | ??28.5 | ???28 | ???28 | ???28 |
| ???T Q | ???86 | ???78 | ???78 | ???76 | ???78 | ???82 | ???82 | ???86 | ???86 |
| ???Vx | ??150 | ??160 | ??190 | ??180 | ??190 | ??200 | ??210 | ??220 | ??230 |
| ???V O | ??370 | ??373 | ??375 | ??380 | ??380 | ??380 | ??380 | ??380 | ??380 |
| ???β | ???0 | ??5500 | ??5700 | ??6000 | ??6000 | ??6000 | ??6000 | ??6000 | ??6000 |
| ????T | ??12.00 | ??16.00 | ??20.00 | ??24.00 |
| ???T In | ??48.2 | ??48.3 | ??48.4 | ??48.5 |
| ???T Outward | ??40.1 | ??40.2 | ??40.2 | ??40.5 |
| ???ΔT | ???8.1 | ???8.1 | ???8.2 | ????8 |
| ???Ta | ???29 | ???29 | ??28.5 | ??28.5 |
| ???T Q | ???78 | ???78 | ???80 | ???82 |
| ???Vx | ??240 | ??250 | ??260 | ??270 |
| ???V O | ??380 | ??381 | ??383 | ??385 |
| ???β | ??6000 | ??6100 | ??6200 | ??6300 |
V
O---be the voltage of the output VC5 of PFC adjuster, surplus with table two.
Comparison sheet two, four as can be known, illumination and voltage relationship are close, and β=KV=60 * V
On table four, V
λDuring → 150～270 variations, V0 changes by 370～385, so illumination change is very little.Be not difficult to know by inference, this ballast cooperates sodium vapor lamp work, can prolong the useful life of lamp beyond doubt.
The element detail list
Sequence number code name title model specification quantity
1 C1 capacitor, 0.1 μ F400V 1
2 C2 capacitor 1000PFY400V 2
3 C3 capacitor 1000PFY400V 2
4 C4 capacitors, 0.1 μ F400V 1
5 C5 electricity Jie device, 47 μ F400V 1
6 C6 porcelain Jie device 1000PFY400V 1
7 C7 paper Jie devices, 0.001 μ F63V 1
8 C8-9 paper Jie devices, 0.001 μ F63V 2
9 C10 paper Jie devices, 0.01 μ F400V 1
10 C11 paper Jie devices, 0.01 μ F400V 1
C12 paper Jie device 1000PF63V 1
C13 paper Jie device 0.47Mf100V 1
Sequence number code name title model specification quantity
1 D1-4 utmost point pipe 1N,548 4
2 D5 diode MU500V5A 1
3 D6-7 voltage stabilizing didoes are to 15V 2
4 D8 diode 1N4,148 1
5 D11 bidirectional trigger diode D2AC32V 1
D12-14 utmost point pipe 1N4,148 3
1 R8 resistor, 0.1 Ω, 3W 1
2 R1 resistor 2M Ω, 1/4W 1
3 R2 resistor 100K, 1/4W 1
4 R3.6 resistor 10K Ω, 1/4W 1
5 R4-5 resistor 50K Ω, 1/4W 1
6 R9 resistor 10K, 1/4W 1
7 R10 resistor 2M Ω, 1/4W 1
R12 resistor 100 Ω, 1/4W 1
R13 resistor 10K Ω, 1/4W 1
1 T1-3 field effect transistor IRF83 3
1 B1 L1=L2=2.7MH iron core EI25,30 circles
2 B2 L3=800 μ H iron core EI33,50 circles
L4=30 μ H iron core EI33 12 circles
3 B3 L5=800 μ H iron core EI35,50 circles
L6=L7=20H iron core EI35 8 circles
4 B4 L9=480 μ H iron core ERC12,80 circles
L10=15 μ H iron core ERC12 2 circles
5 NG 250W high-pressure sodium lamps
6 DY1-4 C1004 or H004
Claims (4)
1, a kind of electronic ballast for high-pressure discharge lamp, it is made up of shell (8) and circuit part (9), and circuit part (9) comprises rectifier (2), adjuster (3), DC/AC inverter (4), load circuit (5), protects and obtain circuit (6), trigger (7); It is characterized in that: DC/AC inverter (4) is the soft switch DC/AC converter of auto-excitation type, and its positive pole connects with the output of adjuster (3), and its output connects with the input of load circuit (5); Soft switch DC/the AC converter of auto-excitation type is anodal drain electrode and the resistance R 1 that connects switch transistor T 2, another termination capacitor C 7 of resistance R 1, anode and the diode D11 of diode D8, another termination capacitor C 8 of diode D11, resistance R 5, R6, another termination switch transistor T 3 grids and diode pair D7 of resistance R 5, capacitor C 8 another termination inductance L 7, inductance L 7, resistance R 8, diode D7 and capacitor C 7 other end ground connection; The source electrode of switch transistor T 2 connects tap place of autotransformer B3; The drain electrode of diode D6, resistance R 4, inductance L 6, resistance R 2 and switch transistor T 3 connects, grid connecting resistance R3, the diode D6 of switch transistor T 2, the other end connecting resistance R4 of resistance R 3, capacitor C 7, another termination inductance L 6 of capacitor C 7, the source ground of T3.
2, electric ballast as claimed in claim 1 is characterized in that: load circuit (5) is leading or retarded type load circuit.
3, electric ballast as claimed in claim 2, it is characterized in that: load circuit (5) is for connecing autotransformer B3 two ends by capacitor C 11 and C12 respectively, another termination high-pressure discharge lamp NG of capacitor C 11, another termination reactor of discharge lamp NG B4 upper end, lower end ground connection, and join with capacitor C 10.
4, as claim 1 or 2 or 3 described electric ballasts, it is characterized in that: insert a filter (1) between power supply and the rectifier (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98121619 CN1121132C (en) | 1998-10-05 | 1998-10-05 | Electronic ballast for high-pressure discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98121619 CN1121132C (en) | 1998-10-05 | 1998-10-05 | Electronic ballast for high-pressure discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1215972A true CN1215972A (en) | 1999-05-05 |
| CN1121132C CN1121132C (en) | 2003-09-10 |
Family
ID=5227189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98121619 Expired - Fee Related CN1121132C (en) | 1998-10-05 | 1998-10-05 | Electronic ballast for high-pressure discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1121132C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007073615A1 (en) * | 2005-12-27 | 2007-07-05 | Waikei Huen | Metal halogenation lamp electron driver |
| CN102143642A (en) * | 2011-04-25 | 2011-08-03 | 刘木泉 | High frequency electronic transformer of heavy power UV lamp |
-
1998
- 1998-10-05 CN CN 98121619 patent/CN1121132C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007073615A1 (en) * | 2005-12-27 | 2007-07-05 | Waikei Huen | Metal halogenation lamp electron driver |
| CN102143642A (en) * | 2011-04-25 | 2011-08-03 | 刘木泉 | High frequency electronic transformer of heavy power UV lamp |
| CN102143642B (en) * | 2011-04-25 | 2013-08-28 | 刘木泉 | High frequency electronic transformer of heavy power UV lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1121132C (en) | 2003-09-10 |
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