CN101631415B

CN101631415B - Electronic rectifier of fluorescent lamp

Info

Publication number: CN101631415B
Application number: CN200910056461XA
Authority: CN
Inventors: 金巧森; 金秋灵
Original assignee: Shanghai Meili Lighting Co Ltd
Current assignee: Shanghai Meili Lighting Co Ltd
Priority date: 2009-08-14
Filing date: 2009-08-14
Publication date: 2013-02-20
Anticipated expiration: 2029-08-14
Also published as: CN101631415A

Abstract

The invention relates to an electronic rectifier, comprising a shell and an electronic circuit arranged in the shell; wherein the electronic circuit comprises a bridge type rectifier circuit and a starting circuit which is in serial connection with a high frequency contravariant circuit and a starter circuit, an abnormal protection automatic restoration circuit is bridge-jointed between the starting circuit and the high frequency contravariant circuit; the invention is characterized in that a power factor main rectifying circuit with power feedback is connected between the bridge type rectifier circuit and the starting circuit, and a power factor assistant rectifying circuit is arranged between the commercial electricity input end and the bridge type rectifier circuit. The invention has the advantages of effectively enhancing the lumen factor, increasing light output, inhibiting surging and avoiding damage caused by thunderstrike and super high power input; effectively reducing the adverse effect of super high temperature of a transistor caused by the situation that a triode can not fast enter saturate state and withdraw saturate state due to the aberration of wave shape during ascending and descending.

Description

A kind of electronic rectifier of fluorescent lamp

Technical field

The present invention relates to a kind of electronic rectifier of fluorescent lamp.

Background technology

Common electron rectifier comprises bridge rectifier, and bridge rectifier is tandem promoter circuit, high-frequency inverter circuit and starting circuit successively, cross-over connection abnormal protection automatic restoring circuit between start-up circuit and high-frequency filter circuit.Without any the circuit that power factor (PF) is proofreaied and correct, so sort circuit often does aspect rich relatively poorly at anti-electromagnetism for, the electron rectifier of this structure, and the lumen coefficient is low simultaneously, can't pass through CE, the safety certifications such as CCC.

Summary of the invention

The purpose of this invention is to provide a kind of electron rectifier that can proofread and correct power factor (PF).

In order to achieve the above object; technical scheme of the present invention has provided a kind of electronic rectifier of fluorescent lamp; comprise shell and place the interior electronic circuit of shell; wherein; electronic circuit comprises bridge rectifier and start-up circuit; start-up circuit connect successively high-frequency inverter circuit and starting circuit; cross-over connection has the abnormal protection automatic restoring circuit between start-up circuit and high-frequency inverter circuit; it is characterized in that; between bridge rectifier and start-up circuit, be connected with the power factor master's correcting circuit with Feedback of Power, between mains electricity input end and bridge rectifier, be provided with the auxiliary correcting circuit of power factor.

The present invention has used and the different principle of other common lines, and high pump makes power factor＞0.95 by stream, ITHD≤20%, and the lamp current crest effectively raises the lumen coefficient than less than 1.7, has increased light output; The auxiliary correcting circuit of power factor has effectively reached the requirement of electromagnetic compatibility, makes electron rectifier in use can effectively reduce the interference that other are produced with electrical equipment in the circuit.

Advantage of the present invention is: effectively raise the lumen coefficient, increased light output; The inhibition surge prevents from being struck by lightning simultaneously and power supply is inputted the destruction that superelevation causes; In use can effectively reduce the interference that other are produced with electrical equipment in the circuit; Reduce reactive loss, improved greatly utilization rate of electrical; Effectively temperature and the anti-current impact property of protection triode can prevent effectively that the triode penetration depth is saturated, and make life of product longer; Effectively reduce because upper edge and lower along the time distortion of waveform and the triode that causes can not enter fast saturated, withdraw from saturation condition fast, and the too high ill effect of the temperature of transistor that causes.

Description of drawings

Fig. 1 is circuit block diagram of the present invention;

Fig. 2 is electrical schematic diagram of the present invention.

Embodiment

Specify the present invention below in conjunction with embodiment.

Embodiment

As shown in Figure 1; circuit block diagram for a kind of electronic rectifier of fluorescent lamp provided by the invention; comprise bridge rectifier 2 and start-up circuit 4; start-up circuit 4 connect successively high-frequency inverter circuit 5 and starting circuit 7; cross-over connection has abnormal protection automatic restoring circuit 8 between start-up circuit 4 and high-frequency inverter circuit 5; between bridge rectifier 2 and start-up circuit 4, be connected with the power factor master's correcting circuit 3 with Feedback of Power, between mains electricity input end and bridge rectifier 2, be provided with the auxiliary correcting circuit 1 of power factor.

As shown in Figure 2, electrical schematic diagram for a kind of electronic rectifier of fluorescent lamp provided by the invention, the auxiliary correcting circuit 1 of power factor comprises filter inductance LF1, common mode inductance LF2, the first capacitor C1 and the second capacitor C 2, the end of filter inductance LF1 and the end of fuse FUSE connect altogether, one end of the filter inductance LF1 other end and the first capacitor C 1, one end of the end of piezo-resistance RV and common mode inductance LF2 input connects altogether, the upper output corresponding with this input of common mode inductance LF2 and an end of the second capacitor C 2, the positive pole of the 3rd diode D3, one end of one end of the 5th capacitor C 5 and the 3rd capacitor C 3 connects altogether, the other end of the other end of the first capacitor C 1 and piezo-resistance RV, an other end of second source input line P1-2 and common mode inductance LF2 input connects altogether, the upper output corresponding with this input of common mode inductance LF2 and an end of the 4th capacitor C 4, one end of the 6th capacitor C 6 and the negative pole of the second diode D2 connect altogether.The component parameters of its auxiliary power factor correcting circuit 1 is L1=1.0-2.5mH, C1=C2=0.22uF/630V.

Power factor master's correcting circuit 3 comprises diode the 5th diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, the 8th capacitor C 8, the 14 capacitor C 14 and the 15 capacitor C 15, one end of the 15 capacitor C 15, the negative pole of the positive pole of the 8th capacitor C 8 and the 8th diode D8 with by the first diode D1, the second diode D2, the output positive potential end of the bridge rectifier that the 3rd diode D3 and the 4th diode D4 form connects altogether, one end of the 14 capacitor C 14, the output zero potential end of the negative pole of the positive pole of the 7th diode D7 and the 7th capacitor C 7 and bridge rectifier connects altogether, the positive pole of the 8th diode D8, the negative pole of the positive pole of the 7th capacitor C 7 and the 5th diode D5 connects altogether, the positive pole of the negative pole of the negative pole of the 7th diode D7 and the 8th capacitor C 8 and the 6th diode D6 connects altogether, one end of the 5th capacitor C 5, the positive pole of the 3rd diode D3, output one end of described common mode inductance LF2, one end of one end of described the second capacitor C 2 and described the 3rd capacitor C 3 connects altogether, one end of the 6th capacitor C 6, the negative pole of the second diode D2, the other end of common mode inductance LF2 output and the other end of the second capacitor C 2 and an end of the 4th capacitor C 4 connect the 5th capacitor C 5 altogether, the 6th capacitor C 6, the other end of the 14 capacitor C 14 and the 15 capacitor C 15 and the positive pole of the 5th diode D5, one end P2-4 of the negative pole of the 6th diode D6 and filament connects altogether.The circuit element coefficient of power factor master's correcting circuit 3 is as follows: C8=C7=10UF/250V-22UF/250V, D5-D8=FR107 DO-41, C5=C6=0.015uF/630VC14=C15=0.022uF/400V.

Start-up circuit is comprised of the first resistance R 1, the second resistance R 2 and the 3rd resistance R 3.The high-frequency inversion part is comprised of the first triode Q1, the second triode Q2, the tenth capacitor C 10, the 11 capacitor C 11, the first inductance L 1, the second inductance L 2, the 9th diode D9, the tenth diode D10, the 9th capacitor C 9, the 5th resistance R 5, the 4th resistance R 4, the 11 diode D11, the 12 diode D12 and pulse transformer RT.Form from the secondary coil of recovery and protection circuit by the 13 diode D13, the 14 diode D14, the 8th resistance R 8, the 9th resistance R 9, the 13 capacitor C 13, the 7th resistance R 7, bi-directional voltage stabilizing pipe DB, the 6th resistance R 6, the 12 capacitor C 12, the 3rd triode Q3 and the first choke T1 and the second choke T2.When circuit is unusual, the secondary coil of the first choke T1 and the second choke T2 will induce higher voltage, rectification output through the 13 diode D13 and the 14 diode D14, make the voltage at the 13 capacitor C 13 two ends reach the puncture voltage of bi-directional voltage stabilizing pipe DB, make the base stage of the first triode Q1 obtain enough dark negative potential and make the first triode Q1 cut-off, because the conducting of bi-directional voltage stabilizing pipe DB, make the 12 capacitor C 12 two ends quick sufficient electric charge necessarily, this electric charge makes the 3rd triode Q3 conducting, makes the first triode Q1 can not get positive bias-voltage and works on.And circuit has stopped work after the first triode Q1 cut-off, the secondary coil of the first choke T1 and the second choke T2 does not just have voltage to go to keep the conducting of bi-directional voltage stabilizing pipe DB yet, but owing to stored certain electric charge in the 12 capacitor C 12, because cycle discharge time of the 12 capacitor C 12 and the 6th resistance R 6, so kept the continuation conducting of the 3rd triode Q3, made the base stage of the first triode Q1 can not get the positively biased current potential and can't make the circuit normal operation.Along with the 12 capacitor C 12 under effect discharge time of the 6th resistance R 6, electric charge in the 12 capacitor C 12 slowly discharges, behind the certain hour, electric charge in the 12 capacitor C 12 can not be kept the conducting of the 3rd triode Q3, so the 3rd triode Q3 withdraws from saturated and cut-off work, the first triode Q1 again obtains positive bias-voltage and works, if unusually remove, the 13 triode C13 two ends will can not get enough electric charges and make bi-directional voltage stabilizing pipe DB conducting, otherwise will continue said process, until unusual the releasing.

As seen from Figure 2, power supply front end of the present invention uses piezo-resistance Rv, effectively must play the inhibition surge, and can prevent thunderbolt and power supply input superelevation etc.; Filter inductance LF1, common mode inductance LF2, the first capacitor C 1 and the second capacitor C 2 have effectively reached the requirement of electromagnetic compatibility, make electron rectifier in use can effectively reduce the interference that other are produced with electrical equipment in the circuit; The first diode D1 to the eight diode D8 and the effective power factor that must improve circuit of peripheral element, reduce busbar voltage, reduced input current, reduced reactive loss, improve greatly utilization rate of electrical, effectively reduce the energy of input cable to country; The first triode Q1 and the second triode Q2 have used the compound transistor triode more advanced than traditional like product, this triode has increased band damping anti-saturation in the internal structure on the basis of conventional transistor, can effectively protect temperature and the anti-current impact property of triode, can prevent effectively that the triode penetration depth is saturated, and make life of product longer; The 11 capacitor C 11, the tenth capacitor C 10, the second inductance L 2 and the first inductance L 1 etc. have formed the link of rectifier groundwork, it than resistance of the simple use of like product aobvious more be added with superior function, it has adopted the absorption of electric capacity fast, the sluggishness of inductance (inverse electromotive force), make the waveform of input transistors base stage near square wave, in like product, effectively reduce because on the edge and lower along the time waveform distortion and the triode that causes can not enter saturated fast, withdraw from fast saturation condition, and the too high ill effect of the temperature of transistor that causes.

Claims

1. electronic rectifier of fluorescent lamp; comprise shell and place the interior electronic circuit of shell; wherein; electronic circuit comprises bridge rectifier (2) and start-up circuit (4); start-up circuit (4) connect successively high-frequency inverter circuit (5) and starting circuit (7); cross-over connection has abnormal protection automatic restoring circuit (8) between start-up circuit (4) and high-frequency inverter circuit (5); it is characterized in that; between bridge rectifier (2) and start-up circuit (4), be connected with the power factor master's correcting circuit (3) with Feedback of Power; between mains electricity input end and bridge rectifier (2), be provided with the auxiliary correcting circuit (1) of power factor, wherein:

Described power factor assists correcting circuit (1) to comprise filter inductance LF1, common mode inductance LF2, the first capacitor C1 and the second capacitor C 2, the end of filter inductance LF1 and the end of fuse FUSE connect altogether, one end of the filter inductance LF1 other end and the first capacitor C 1, one end of the end of piezo-resistance RV and common mode inductance LF2 input connects altogether, the upper output corresponding with this input of common mode inductance LF2 and an end of the second capacitor C 2, the positive pole of the 3rd diode D3, one end of one end of the 5th capacitor C 5 and the 3rd capacitor C 3 connects altogether, the other end of the other end of the first capacitor C 1 and piezo-resistance RV, an other end of second source input line (P1-2) and common mode inductance LF2 input connects altogether, the upper output corresponding with this input of common mode inductance LF2 and an end of the 4th capacitor C 4, one end of the 6th capacitor C 6 and the negative pole of the second diode D2 connect altogether;

Described power factor master's correcting circuit (3) comprises diode the 5th diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, the 8th capacitor C 8, the 14 capacitor C 14 and the 15 capacitor C 15, one end of the 15 capacitor C 15, the negative pole of the positive pole of the 8th capacitor C 8 and the 8th diode D8 with by the first diode D1, the second diode D2, the output positive potential end of the bridge rectifier that the 3rd diode D3 and the 4th diode D4 form connects altogether, one end of the 14 capacitor C 14, the output zero potential end of the negative pole of the positive pole of the 7th diode D7 and the 7th capacitor C 7 and bridge rectifier connects altogether, the positive pole of the 8th diode D8, the negative pole of the positive pole of the 7th capacitor C 7 and the 5th diode D5 connects altogether, the positive pole of the negative pole of the negative pole of the 7th diode D7 and the 8th capacitor C 8 and the 6th diode D6 connects altogether, one end of the 5th capacitor C 5, the positive pole of the 3rd diode D3, output one end of described common mode inductance LF2, one end of one end of described the second capacitor C 2 and described the 3rd capacitor C 3 connects altogether, one end of the 6th capacitor C 6, the negative pole of the second diode D2, the other end of common mode inductance LF2 output and the other end of the second capacitor C 2 and an end of the 4th capacitor C 4 connect the 5th capacitor C 5 altogether, the 6th capacitor C 6, the other end of the 14 capacitor C 14 and the 15 capacitor C 15 and the positive pole of the 5th diode D5, one end (P2-4) of the negative pole of the 6th diode D6 and filament connects altogether.