CN2865188Y - High-intensity discharge lamp ballast with noise and periodicity signal composite frequency modulation - Google Patents
High-intensity discharge lamp ballast with noise and periodicity signal composite frequency modulation Download PDFInfo
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- CN2865188Y CN2865188Y CNU2005201160396U CN200520116039U CN2865188Y CN 2865188 Y CN2865188 Y CN 2865188Y CN U2005201160396 U CNU2005201160396 U CN U2005201160396U CN 200520116039 U CN200520116039 U CN 200520116039U CN 2865188 Y CN2865188 Y CN 2865188Y
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The utility model relates to the field of energy-saving electric light source for HID lamp that has high intensity gas discharging, in particular to a high intensity discharging lamp ballast with noise and period signal compound frequency modulation. It comprises a filter suppressing electromagnetic interference EMI from power supply, a main power supply rectifying circuit, a self-oscillating pulse generator, a half or full bridge driver, a half or full bridge on/off inverter, and a starting circuit, etc. It is characterized in that: an active power factor pre-regulating circuit APFC and a DC power supply for the control circuit, a noise generator, a period signal generator, and an abnormality detection & protection circuit are provided. The high intensity discharging lamp ballast is provided with rough modulation for period change and fine modulation for noise disturbance that change with central frequency, the suppression over discharging arc is enhanced so that it will not generate stationary wave, avoid sound resonance and turbulent arc, and it is of constant power. Fault protection is achieved when the lamp holder is in poor contact and the lamp is aged and doesn't work.
Description
Technical field
The utility model relates to the energy-saving electric light source technology of high intensity gas discharge HID lamp field, specifically is the high intensity discharge lamp ballast of a kind of noise and periodic signal composite frequency modulation.
Background technology
High intensity gas discharge HID lamp, claim high luminosity discharge lamp again, at present, common HID lamp has Metal halogen lamp, sodium vapor lamp and mercury lamp, sodium vapor lamp divides low-pressure sodium lamp LPS and high-pressure sodium lamp HPS, the Metal halogen lamp light efficiency reaches 80～125lm/w, and the high-pressure sodium lamp light efficiency is higher, becomes " green illumination ", high intensity discharge high-pressure sodium lamp operate as normal is high to the specification requirement of its ballast, especially the high-pressure sodium lamp that power is bigger is higher to its ballast specification requirement, wherein, and when the high frequency power of fixed frequency is worked, " acoustic resonance " problem is the most worried, perplexing the opportunity of putting on market, in use light tube electric voltage can rise suddenly, electric arc distortion flicker, the electrical discharge arc instability appears, gently then make light shake, heavy then the electric arc instability causes blow-out, with voltage rising electric current sharply rising burn fluorescent tube.Studying its reason is that the wave impulse of fluorescent tube internal pressure is returned from the tube wall internal reflection, when with the same frequency same-phase of lamp high-frequency current harmonic components, can form standing wave, produce sound wave toot vibration altogether, what size of its resonance frequency and arc lamp tube is closely related, and frequency is not single, and it comprises all frequencies of first-harmonic and high order harmonic component.Get single-frequency periodic signal frequency modulation high-frequency pulse oscillator in the prior art, impulse hunting is changed by FM signal suppress the lamp electric arc tube with the formation of standing wave frequently, it is fast because the FM signal cyclic variation is big, moment light shake even blow-out also have generation, separate never thorough, and FM signal speed is placed restrictions on by it, improves the impulse hunting frequency and then increases circuit power consumption, awaits deeply and raising so suppress the acoustic resonance technology.In addition, lamp triggers start-up course fluorescent tube and ballast is easily caused damage, and this is that impulsive force is big owing to the discharging current high density, gas discharge electric arc instability, and power supply is short of due to the constant output characteristic.Owing to lamp is operated under the technical conditions of high-intensity discharge, reliability service requires high, is important to its abnormal state detection protection, needs raising and perfect.
Summary of the invention
The purpose of this utility model provides and strengthens the high-intensity gas discharge lamp electric arc tube formation standing wave that is suppressed under the high frequency electric source work and a kind of noise of acoustic resonance and the high-intensity lamp ballast of periodic signal composite frequency modulation take place.
The utility model technical solution; be provided with and suppress power supply Electromagnetic interference filter EMI; the main power source rectification circuit; self-oscillation pulse generator IC; half-bridge or full bridge driver IC; half-bridge or full-bridge inverter; start-up circuit; it also is provided with the DC power supply of active power factor pre-adjustment converter APFC and control circuit thereof; noise generator; periodic signal generator; lamp load abnormal current testing circuit; inverter power pipe overtemperature prote circuit; inverter abnormal voltage testing circuit; monostable triggers timer; the connection of this ballast circuit for high-intensity discharging lamp is to suppress power supply Electromagnetic interference filter EMI in electrical network inlet wire serial connection; the main power source rectification circuit; insert active power factor pre-adjustment converter APFC then; direct current feedback through converter output connects half-bridge or full-bridge inverter; the control circuit DC power supply is in the rectification of APFC converter boost inductor coupling high frequency voltage; self-oscillation pulse generator IC is received in voltage stabilizing; half-bridge or full bridge driver IC; periodic signal generator; monostable triggers timer; lamp load abnormal current testing circuit; inverter power pipe overtemperature prote circuit; the power end of inverter abnormal voltage testing circuit, the FREQUENCY CONTROL R of self-oscillation pulse generator IC is inserted in the output of noise generator and the output of periodic signal generator stack back
TEnd, the input of half-bridge or full bridge driver IC is connected with the output of self-oscillation pulse generator IC, the input of its output and half-bridge or full-bridge inverter is joined, start-up circuit inserts the output of half-bridge or full-bridge inverter, and access lamp load abnormal current testing circuit, monostable triggers the trigger end and the lamp load abnormal current testing circuit of timer, inverter power pipe overtemperature prote circuit, the output of inverter abnormal voltage testing circuit joins, monostable triggers the output access half-bridge of timer or the contactor control end of full bridge driver IC, APFC output of active power factor pre-adjustment converter and half-bridge or full-bridge inverter output connect inverter abnormal voltage testing circuit, the output of half-bridge or full-bridge inverter also is connected to the input of random noise generator, and the inverter power pipe is closely pasted thermistor to be over-temperature sensor and to insert protective circuit;
And noise generator is oppositely to insert half-bridge or the full-bridge inverter output signal direct voltage through wave detector by voltage stabilizing didoe, and the noise of its output is provided with the upper frequency limit circuit;
Periodic signal generator is to be made of sinusoidal wave or non-string wave oscillator, be to introduce RC capacitance-resistance frequency-selecting and feedback network at amplifier circuit, satisfy the self-oscillation condition, produce the periodic signal system of low-frequency sine or non-sinusoidal waveform, sine-wave oscillator is provided with output fixed ampllitude and impedance inverter circuit, and nonsinusoidal oscillator is provided with fixed ampllitude and integrating circuit and the adjustable components and parts of waveform occupation efficiency;
Active power factor pre-adjustment converter APFC13 is by fixed frequency average current type current booster converter IC chip and this chip multiplier sample resistance thereof, error sampling resistance, current sampling resistor, boost inductor, power switch pipe, high-frequency diode, output capacitance constitutes, the output of main power source rectification circuit is connected to the multiplier sample resistance of booster converter IC chip, simultaneously, this power supply is through boost inductor, power switch pipe, high-frequency diode, output capacitance put-into error sample resistance, current sampling resistor is serially connected between the source electrode of the negative pole of main power source rectification circuit output and power switch pipe, and the grid of power switch pipe connects converter IC chip driver output;
Inverter abnormal voltage testing circuit is to insert monostable triggering timer trigger end by APFC output again through electric resistance partial pressure and half-bridge or full-bridge inverter output after peak detection inserts rc delay network, bidirectional trigger diode, switching circuit; Lamp load abnormal current detector is to insert monostable by the lamp load current transformer through wave detector, voltage comparator output to trigger the timer trigger end; Inverter power pipe overtemperature prote circuit is to insert monostable by the thermistor bridge on the power switch pipe that closely sticks in half-bridge or the full-bridge inverter through the output of amplifier voltage comparator to trigger the timer trigger end, and its monostable triggers the output access half-bridge of timer or the contactor control end of full bridge driver IC.
The technical program design is the output frequency of composite frequency modulation of sine wave and noise self-oscillation pulse generator IC, periodic signal changes coarse adjustment and random noise disturbance fine tuning double grading changes around centre frequency, suppress the acoustic resonance point, make it can't form acoustic resonance once more, light is stable, the flicker free phenomenon is eliminated significantly improving of acoustic resonance; Power supply adopts APFC active power factor pre-adjustment circuit lamp current crest than significantly reducing, and has greatly improved the stability of modulating voltage and lamp current, and it can be worked on permanent power stability ground, the inhibition lamp arc that wafts.In addition; the lamp load current anomaly is set detects protective circuit; inverter power pipe overtemperature prote circuit, inverter abnormal voltage testing circuit greatly improve and improve lamp operate as normal reliability; can cut off circuit protection to the power device of inverter overtemperature is not damaged it; situations such as lamp holder loose contact, fluorescent tube ageing failure can restart in an amount of discontinuity power supply, can't start in the regular hour; then quit work automatically, guard lamp and ballast are not suffered a loss.
Description of drawings
Fig. 1 is the utility model theory diagram
Fig. 2 is noise and periodic signal triangular wave composite frequency modulation modulation signal generator circuit
Fig. 3 is noise and the sinusoidal wave composite frequency modulation modulation signal generator of periodic signal circuit
Fig. 4 is noise and periodic signal sawtooth wave composite frequency modulation modulation signal generator circuit
With reference to Fig. 1; it is provided with and suppresses power supply EMI FILTER EMI11; main power source rectification circuit 12; self-oscillation impulse generator IC3; half-bridge or full bridge driver IC4; half-bridge or full-bridge inverter 5; start-up circuit 6; it also is provided with the dc source 14 of active power factor pre-adjustment converter APFC13 and control circuit thereof; periodic signal generator 1; noise generator 2; lamp load abnormal current testing circuit 9; inverter power pipe Overtemperature protection circuit 10; inverter abnormal voltage testing circuit 7; monostable trigger timer 8; the connection of this high-intensity lamp ballast circuit is to suppress power supply EMI FILTER EMI11 in electrical network inlet wire serial connection; main power source rectification circuit 12; insert then active power factor pre-adjustment converter APFC13; direct current feedback through converter output connects half-bridge or full-bridge inverter 5; control circuit dc source 14 is in the rectification of APFC converter 13 boost inductors coupling high frequency voltage; self-oscillation impulse generator IC3 is received in voltage stabilizing; half-bridge or full bridge driver IC4; periodic signal generator 1; monostable trigger timer 8; lamp load abnormal current testing circuit 9; inverter power pipe Overtemperature protection circuit 10; the power end of inverter abnormal voltage testing circuit 7, the FREQUENCY CONTROL R of access self-oscillation impulse generator IC3 after the output stack of the output of periodic signal generator 1 and noise generator 2TEnd, the input of half-bridge or full bridge driver IC4 and self-oscillation pulse The output of generator IC3 is connected, the input phase of its output and half-bridge or full-bridge inverter 5 Connect, start-up circuit 6 inserts the output of half-bridge or full-bridge inverter 5, and it is different to insert lamp load Normal current detection circuit 9, the trigger end of monostable trigger timer 8 and lamp load abnormal current Testing circuit 9, inverter power pipe Overtemperature protection circuit 10, inverter abnormal voltage detect The output of circuit 7 joins, and the output of monostable trigger timer 8 inserts half-bridge or full-bridge Driver IC 4 contactor control ends, active power factor pre-adjustment converter APFC13 Output and half-bridge or full-bridge inverter 5 outputs connect inverter abnormal voltage testing circuit 7, half-bridge Or the output of full-bridge inverter 5 also is connected to the input of noise generator 2, inverter 5 merits The rate pipe is closely pasted thermistor to be over-temperature sensor and to insert holding circuit 10.
Self-oscillation impulse generator IC chip pin RTEnd and CTEnd is the timing controlled end, and external suitable RC Resistor-Capacitor Unit can be controlled its oscillating impulse frequency, changes R based on this principle utilizationTEquiva lent impedance can change frequency of oscillation, and the input cycle changes and the noise composite signal Be modulation voltage, change the purpose that its equivalent resistance reaches frequency modulation, make its IC output intermittent angle The frequency variation that is directly proportional with modulation voltage, modulation voltage is more big, and the maximum frequency deviation of frequency-modulated wave is just More big, coefficient of frequency modulation and modulating frequency are inversely proportional to, get the lower periodic signal of modulating frequency with Noise obtains bigger coefficient of frequency modulation and suppresses the acoustic resonance of lamp electric arc standing wave. Adopt general self-oscillation The compatible frequency modulation function of impulse generator IC chip is cheap, is conducive to reduce the ballast cost.
Fig. 2 is random noise and triangular wave composite frequency modulation modulation signal generator, and it is by surely Press diode VD3 oppositely to insert through Resistor-Capacitor Unit R9, C6 series network and half-bridge or full-bridge The output of switching inverter 5 coupling, resistance R 9, R8 dividing potential drop by VD1, VD2, R7, C5 forms the output voltage of detection, wave filter, the termination power of Zener diode VD3, The other end then connects R6, the C4 Resistor-Capacitor Unit of earth, and as noise generator 2 Output. Triangular-wave generator 1 employing 555 o'clock bases IC circuit and R1, R2, C1, C2 Be connected into no stable state multi resonant square-wave oscillator, its output is low by R3, R4, the passive integration of C3 The pass filter network is triangular wave, and output load resistance can be by an adjustable resistance or two resistance R5, R6 connect, and are terminated at the FREQUENCY CONTROL R of self-oscillation impulse generator IC3 on itTEnd, Middle-end connects the output of random noise generator 2, lower end ground connection.
Fig. 3 is the composite frequency modulation of sine wave and noise modulation signal generator, it is by sine-wave generator, it is by R1, C1, R2, C2 Wen circuit is frequency-selecting and feedback network, adopting amplifier IC1 is monofier spare, sinusoidal signal output is provided with fixed amplitude circuit VD1, VD2 and impedance transformation voltage follower IC2, its oscillation amplitude depends on the voltage-stabiliser tube magnitude of voltage, RP1 can be transferred to suitable negative-feedback makes the output waveform distortion little and be convenient to starting of oscillation, RC=R1C1=R2C2 among the figure, frequency of oscillation f0Depend on the RC value. Noise generator 2, it is Oppositely inserted through current transformer T1 and half-bridge or full-bridge inverter by Zener diode VD3 5 output signals couplings, detector diode VD4～VD7 bridge rectifier, R8, C4, C5 are low The DC voltage of pass filter, Zener diode VD3 one termination power, the other end inserts crystal The base stage of pipe VT1 amplifier, this amplifier is provided with voltage negative feedback capacity C3, noise signal Insert amplifier voltage follower IC2 by colelctor electrode output, noise and sinusoidal signal add fortune simultaneously Follower IC2 is pressed in discharge, and its output inserts the R of self-oscillation impulse generator 3TEnd.
Fig. 4 is random noise and sawtooth wave composite frequency modulation modulation signal generator, and it is by surely Press diode VD2 oppositely to insert through Resistor-Capacitor Unit R9, C6 series network and half-bridge or full-bridge The coupling of the output signal of switching inverter 5, resistance R 9, R8 dividing potential drop by VD1 detection rectification, The output dc voltage that C5 filtering forms, the termination power of Zener diode VD2, in addition One end ground connection, the output of noise generator 2 are inserted amplifier voltage follower IC2. Sawtooth waveforms is sent out Give birth to device 1 employing 555 o'clock bases IC1 circuit and R1, R2, R3, C2, C3 and be connected into nothing surely Attitude multi resonant square-wave oscillator, its output inserts amplifier voltage follower IC2 by C1, R4 Extract sawtooth signal, the saw-toothed oscillator frequency f0Depend on R1, R2, R3, C3, R1=R2, R3 can make the negative sense velocity of discharge of waveform slack-off, improve the linearity, and C3 is sawtooth Formation electric capacity, C1 is the coupling capacitance of Voltage Feedback, this saw-toothed oscillator overcomes usually Constant-current source be subjected to temperature to the impact of frequency, wave distortion＜%1, voltage follow to capacitor charging Device plays impedance transformation, is output as Low ESR.
Noise source among Fig. 2, Fig. 3, Fig. 4 is to utilize back-biased Zener diode work Produce in avalanche condition, this noise can be thought stably normal distribution random process, Average is zero, and frequency spectrum is broadband noise, is at lower frequency because the inhibition sound wave is total to toot vibration Scope is so be provided with upper frequency limit capacitor attenuates high frequencies at noise generator, it and week The phase signal is superposed to the composite frequency modulation modulation signal, in the overlapping random noise of cycle variable signal, Both primary characteristics of hold period signal single-frequency frequency modulation, coarse adjustment suppress lamp electric arc accumulation energy, And the trickle disturbance characteristic of random noise carefully suppresses each resonance point, makes its lamp stable luminescence, The flicker free phenomenon strengthens the successful that suppresses acoustic resonance with the cycle double grading at random and improves.
Quote the high-frequency fm signal of the resonant tank of switching inverter circuit 5 outputs, the detection electricity Press the reverse breakdown Zener diode to produce random noise, essence is a negative feedback closed loop control System not only can greatly improve modulation sensitivity, and job stability is very high.
Active power factor pre-adjustment converter is operated in the average current under the fixed frequency mode Type APFC circuit energy decrease current spike is suitable for high-power high-intensity-gas The Metal halogen lamp ballast of discharge HID, the positive role that active APFC main circuit is wanted is energy Improve the power factor compensation electrical network, and have the function of the pre-voltage stabilizing of output voltage. At the electrical network electricity Press when changing significantly or the starting ignition of ballast lamp, arc discharge are impacted, based on APFC The output voltage of circuit is stable, can make electric ballast high frequency conversion circuit have good Working environment keeps power of lamp tube constant, guarantees the stable of electrical discharge arc. Simultaneously, also subtract The voltage stress of light electron ballast circuit components and parts.
Lamp load current anomaly reflection lamp and ballast break down, analyzing a large amount of fault cases, to be higher than 70% be that the inverter power switching tube damages and to cause, therefore, the lamp load overcurrent generation that prevents the ballast abnormality state is overheated, and it is very important that the detection of lamp load abnormal current, the detection of inverter high-power switchgear device overtemperature and inverter abnormal voltage detection raising ballast reliability are set.
The tested abnormal current signal triggering of the utility model monostable timing device through the output of time delayed turn-off half-bridge or full bridge driver, promptly stops the work of ballast, and protection device is not lost by it; Equally, utilize the power device overtemperature signal of thermistor sensing to pass through the amplifier voltage ratio, reach set point and trigger the monostable timing device, turn-off half-bridge or full bridge driver, realize overtemperature prote; It is to improve the defencive function of abnormality and improve the lamp restart facility that the input/output voltage of setting up inverter detects.When ballast or Metal halogen lamp break down or run into various abnormality, promptly trigger an amount of contactor of regularly opening or turn-off half-bridge or full bridge driver again of monostable flipflop, to start or the protective circuit device is avoided loss.
Aura arc light and make each stage of stable discharging then a little less than the course of work of Metal halogen lamp abnormal state detection protection and its start-up circuit trigger igniting and produce; timer postpone to make its lamp break down or artificial interruption of work after; restart again; fluorescent tube has the time of cooling, has the protection of lamp loss of ignition.
Specific implementation method
The present embodiment power output is a 400w Metal halogen lamp ballast, adopts the output of half-bridge driver and half-bridge inverter high-frequency impulse frequency-modulated wave, Metal halogen lamp ballast centre frequency f
0Be 35.3kHz, modulation signal f
mModulating frequency random noise upper frequency limit by scope about 200Hz, periodic signal triangular wave frequency is 160Hz, the frequency deviation Δ f of composite frequency modulation is ± 3.5kHz, the frequency-modulated wave modulation signal changes around centre frequency with the cycle double grading at random, both kept the positive and negative round trip slope of triangular wave periodic signal single-frequency frequency modulation to make its frequency liter, the primary characteristic of falling, coarse adjustment suppresses the lamp arc and forms standing wave, the fine tuning of random noise disturbance characteristic greatly strengthens inhibition acoustic resonance point, even the Metal halogen lamp discharge arc tube is axial, the natural resonance frequency of radial dimension comprises that first-harmonic and high order harmonic component frequency form standing wave, the frequency modulation characteristic of the trickle disturbance of random noise can carefully suppress to make it can't accumulation energy, and, nonperiodic signal is not repeated at random, repeating collision probability with electric arc tube acoustic resonance frequency with frequency is zero, therefore, it is obvious to avoid taking place the acoustic resonance action effect.
Because power supply adopts active power factor pre-adjustment boosting inverter technology APFC; the line voltage scope is when 85～270V; VD is constant to be 385V; adapt to global different line voltage and use, the PWM oscillator frequency in the APFC chip is 100kHz, system power factor λ 〉=0.99; the total harmonic distortion THD of input source current＜5%; the Metal halogen lamp ballast satisfies startup, igniting, transient process, abnormal protection, and steady operation has permanent power characteristics.
Embodiment 3, power output 1000w high-voltage sodium lamp ballast, and technical scheme is identical with embodiment 1, and difference just adopts full bridge driver and full-bridge inverter to be the output of high frequency frequency-modulated wave, average frequency f
0Be 38kHz, modulation signal f
mModulating frequency random noise upper frequency limit by scope about 260Hz, sine wave freuqency is 180Hz, the frequency deviation Δ f of composite frequency modulation is ± 2.8kHz, the frequency-modulated wave modulation signal changes around centre frequency with the cycle double grading at random, improve and suppress lamp arc accumulation energy, the positive role of avoiding acoustic resonance to play very well.Set abnormality detection protective circuit; the lamp load abnormal current detects, the input/output voltage of inverter detects the defencive function and the restart function that can improve abnormality; when situations such as lamp holder loose contact, fluorescent tube ageing failures; can an amount of discontinuity power supply restart; in the regular hour, can't start, then quit work automatically, thereby guard lamp and ballast are not suffered a loss; even have a power failure at short notice, can restart and light illumination once more.Inverter high-power switchgear device overtemperature automatic shutdown circuit stops its work protection and is not damaged.
Claims (5)
1. the high intensity discharge lamp ballast of noise and periodic signal composite frequency modulation; be provided with and suppress power supply Electromagnetic interference filter EMI; the main power source rectification circuit; self-oscillation pulse generator IC; half-bridge or full bridge driver IC; half-bridge or full-bridge inverter; start-up circuit; it is characterized in that: it also is provided with the DC power supply of active power factor pre-adjustment converter APFC and control circuit thereof; noise generator; periodic signal generator; lamp load abnormal current testing circuit; inverter power pipe overtemperature prote circuit; inverter abnormal voltage testing circuit; monostable triggers timer; the connection of this ballast circuit for high-intensity discharging lamp is to suppress power supply Electromagnetic interference filter EMI in electrical network inlet wire serial connection; the main power source rectification circuit; insert active power factor pre-adjustment converter APFC then; direct current feedback through converter output connects half-bridge or full-bridge inverter; the control circuit DC power supply is in the rectification of APFC converter boost inductor coupling high frequency voltage; self-oscillation pulse generator IC is received in voltage stabilizing; half-bridge or full bridge driver IC; periodic signal generator; monostable triggers timer; lamp load abnormal current testing circuit; inverter power pipe overtemperature prote circuit; the power end of inverter abnormal voltage testing circuit, the FREQUENCY CONTROL R of self-oscillation pulse generator IC is inserted in the output of noise generator and the output of periodic signal generator stack back
TEnd; the input of half-bridge or full bridge driver IC is connected with the output of self-oscillation pulse generator IC; the input of its output and half-bridge or full-bridge inverter is joined; start-up circuit inserts the output of half-bridge or full-bridge inverter; and access lamp load abnormal current testing circuit; monostable triggers the trigger end and the lamp load abnormal current testing circuit of timer; inverter power pipe overtemperature prote circuit; the output of inverter abnormal voltage testing circuit joins; monostable triggers the output access half-bridge of timer or the contactor control end of full bridge driver IC; APFC output of active power factor pre-adjustment converter and half-bridge or full-bridge inverter output connect inverter abnormal voltage testing circuit; the output of half-bridge or full-bridge inverter also is connected to the input of random noise generator, and the inverter power pipe is closely pasted thermistor to be over-temperature sensor and to insert protective circuit.
2, the high intensity discharge lamp ballast of noise according to claim 1 and periodic signal composite frequency modulation, it is characterized in that: noise generator is oppositely to insert the direct voltage of the output signal of half-bridge or full-bridge inverter through wave detector by voltage stabilizing didoe, and the noise of its output is provided with the upper frequency limit circuit.
3, the high intensity discharge lamp ballast of noise according to claim 1 and periodic signal composite frequency modulation, it is characterized in that: periodic signal generator is to be made of sinusoidal wave or non-string wave oscillator, it is to introduce RC capacitance-resistance frequency-selecting and feedback network at amplifier circuit, satisfy the self-oscillation condition, produce the periodic signal of low-frequency sine or non-sinusoidal waveform, sine-wave oscillator is provided with output fixed ampllitude and impedance inverter circuit, and nonsinusoidal oscillator is provided with fixed ampllitude and integrating circuit and the adjustable components and parts of waveform occupation efficiency.
4, the high intensity discharge lamp ballast of noise according to claim 1 and periodic signal composite frequency modulation, it is characterized in that: active power factor pre-adjustment converter APFC (13) is by fixed frequency average current type current booster converter IC chip and this chip multiplier sample resistance thereof, error sampling resistance, current sampling resistor, boost inductor, power switch pipe, high-frequency diode, output capacitance constitutes, the output of main power source rectification circuit is connected to the multiplier sample resistance of booster converter IC chip, simultaneously, this power supply is through boost inductor, power switch pipe, high-frequency diode, output capacitance put-into error sample resistance, current sampling resistor is serially connected between the source electrode of the negative pole of main power source rectification circuit output and power switch pipe, and the grid of power switch pipe connects converter IC chip driver output.
5, the high intensity discharge lamp ballast of noise according to claim 1 and periodic signal composite frequency modulation is characterized in that: inverter abnormal voltage testing circuit is to insert monostable triggering timer trigger end by APFC output again through electric resistance partial pressure and half-bridge or full-bridge inverter output after peak detection inserts rc delay network, bidirectional trigger diode, switching circuit; Lamp load abnormal current detector is to insert monostable by the lamp load current transformer through wave detector, voltage comparator output to trigger the timer trigger end; Inverter power pipe overtemperature prote circuit is to insert monostable by the thermistor bridge on the power switch pipe that closely sticks in half-bridge or the full-bridge inverter through the output of amplifier voltage comparator to trigger the timer trigger end, and its monostable triggers the output access half-bridge of timer or the contactor control end of full bridge driver IC.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201160396U CN2865188Y (en) | 2005-10-15 | 2005-10-15 | High-intensity discharge lamp ballast with noise and periodicity signal composite frequency modulation |
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| CNU2005201160396U CN2865188Y (en) | 2005-10-15 | 2005-10-15 | High-intensity discharge lamp ballast with noise and periodicity signal composite frequency modulation |
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| CN2865188Y true CN2865188Y (en) | 2007-01-31 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475339A (en) * | 2013-09-10 | 2013-12-25 | 昆山新金福精密电子有限公司 | Multi-resonant oscillating circuit |
| CN106452365A (en) * | 2016-08-16 | 2017-02-22 | 嘉兴市纳杰微电子技术有限公司 | High linearity sine wave generator followed by clock multiplier dividing |
| CN112065374A (en) * | 2020-10-20 | 2020-12-11 | 中国石油集团渤海钻探工程有限公司 | Dynamic optimization design method for measuring mud pressure wave signal period while drilling |
| CN112731087A (en) * | 2021-01-20 | 2021-04-30 | 丰郅(上海)新能源科技有限公司 | Fault arc detection system and method for photovoltaic field |
-
2005
- 2005-10-15 CN CNU2005201160396U patent/CN2865188Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475339A (en) * | 2013-09-10 | 2013-12-25 | 昆山新金福精密电子有限公司 | Multi-resonant oscillating circuit |
| CN106452365A (en) * | 2016-08-16 | 2017-02-22 | 嘉兴市纳杰微电子技术有限公司 | High linearity sine wave generator followed by clock multiplier dividing |
| CN106452365B (en) * | 2016-08-16 | 2023-08-18 | 嘉兴市纳杰微电子技术有限公司 | High linearity sine wave generator followed by divided clock multiple |
| CN112065374A (en) * | 2020-10-20 | 2020-12-11 | 中国石油集团渤海钻探工程有限公司 | Dynamic optimization design method for measuring mud pressure wave signal period while drilling |
| CN112065374B (en) * | 2020-10-20 | 2022-04-12 | 中国石油集团渤海钻探工程有限公司 | Dynamic optimization design method for measuring mud pressure wave signal period while drilling |
| CN112731087A (en) * | 2021-01-20 | 2021-04-30 | 丰郅(上海)新能源科技有限公司 | Fault arc detection system and method for photovoltaic field |
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