CN101466191B - High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp - Google Patents
High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp Download PDFInfo
- Publication number
- CN101466191B CN101466191B CN2009100580720A CN200910058072A CN101466191B CN 101466191 B CN101466191 B CN 101466191B CN 2009100580720 A CN2009100580720 A CN 2009100580720A CN 200910058072 A CN200910058072 A CN 200910058072A CN 101466191 B CN101466191 B CN 101466191B
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- parallel connection
- feedback signal
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention relates to a high-power parallel connection auto-excitation type electrodeless fluorescent lamp vacuum tube converter; the vacuum tube converter comprises a filter circuit, a rectification circuit, a power factor correcting circuit, a delay trigger circuit, a power amplification circuit, a choking winding, an oscillation output circuit and a feedback transformer; and the vacuum tube converter is characterized in that the vacuum tube converter is provided with a feedback signal parallel connection pick-up circuit, the feedback signal parallel connection pick-up circuit is provided with a feedback signal circuit input end and a feedback signal circuit output end, the choking winding is provided with a choking winding feedback signal pick-up end, the filter circuit is connected with the rectification circuit, the rectification circuit is connected with the power factor correcting circuit which is connected with the delay trigger circuit, the delay trigger circuit is connected with the power amplification circuit, the power amplification circuit is connected with the oscillation output circuit, the choking winding feedback signal pick-up end is connected with the feedback signal circuit input end, the feedback signal circuit output end is connected with the feedback transformer, and the feedback transformer is connected with the power amplification circuit.
Description
Technical field
The present invention relates to a kind of electric ballast, especially a kind of high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp.
Background technology
The electrodeless lamp auto-excitation type of existing external frequency electronic frequency changer of high (being called the electroless lamp ballasting device again) is used for lasting electric current to electrodeless lamp being provided; Promptly pass through the power supply of conversion; Be the kit that electrodeless lamp work must be used, when this auto-excitation type electric frequency converter uses, the problem that power consumption is bigger than normal, temperature rise is higher arranged in high-power electrodeless lamp (more than the 60W); These problems directly influence the job stability of electrodeless lamp frequency converter, and then shorten the useful life of electrodeless lamp.In order to solve this deficiency; The technical staff reduces the temperature of frequency converter by every means in the hope of prolonging the useful life of electrodeless lamp; For example 200810014822.X number disclosed intelligent heat radiation control device for non-pole lamp rectifier applied in China's invention; This device comprises ballast housing, and ballast power output magnet ring is housed in the housing, and DC electric fan is housed on the ballast housing.The intelligent heat dissipation control circuit comprises inductance coil; It is on power output magnet ring; The voltage that induces forms direct voltage through rectification, filtering and supplies DC electric fan to use, and after voltage stabilizing, supplies entire circuit to use, and after accurate voltage stabilizing, for dual operational amplifier reference voltage is provided again.Thermistor is attached on the power tube of ballast or on the fin of power tube; The temperature sensor signal that detects passes to dual operational amplifier after anti-interference; Through amplify, anti-interference, relatively, upset back one tunnel is connected with DC electric fan through drive circuit, control the work of DC electric fan and stop; The positive and negative in-phase input end that is fed to dual operational amplifier in another road.This invention can automatically reduce the working temperature of electroless lamp ballasting device, improved ballast reliability, prolonged its useful life.Though this invention application can reduce the surface temperature of ballast; But the elements such as electric fan that increase have strengthened power consumption on the contrary and have produced magnetic interference; Be unfavorable for electrodeless lamp working stability; And fundamentally do not solve ballast self-heating and power consumption problem bigger than normal, still can not effectively prolong the useful life of electrodeless lamp.Therefore, be badly in need of a kind of power consumption and temperature rise that can effectively reduce frequency-variable electronic device self is provided, and can prolong the product high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp in useful life.
Summary of the invention
The objective of the invention is on the structure of existing electric ballast, to improve, a kind of power consumption and temperature rise that can effectively reduce frequency-variable electronic device self is provided, and can prolongs the product high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp in useful life.
High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp of the present invention has filter circuit, rectification circuit, power factor correction circuit, delay trigger circuit, power amplification circuit, choking-winding, vibration and output circuit, feedback transformer; Said filter circuit has filter circuit input and filter circuit output; Said rectification circuit has rectification circuit input end and rectification circuit output end; Said power factor correction circuit has power factor correction circuit input and power factor correction circuit output; Said delay trigger circuit has power input and delay trigger circuit output; Said power amplification circuit has power amplification circuit input and power amplification circuit output; Said choking-winding has choking-winding input and choking-winding output; Said vibration and output circuit have vibration and output circuit input, and said feedback transformer has feedback transformer input and feedback transformer output, it is characterized in that having feedback signal parallel connection pick-up circuit; Said feedback signal parallel connection pick-up circuit has feedback signal parallel connection pick-up circuit input and feedback signal parallel connection pick-up circuit output; Said choking-winding has the parallel connection of choking-winding feedback signal and picks up end, and said filter circuit output is connected with rectification circuit input end, and said rectification circuit output end is connected with the power factor correction circuit input; Said power factor correction circuit output is connected with said delay trigger circuit power input; Said delay trigger circuit output is connected with the power amplification circuit input, and said power amplification circuit output is connected with vibration and output circuit input, and the parallel connection of said choking-winding feedback signal is picked up end and is connected with feedback signal parallel connection pick-up circuit input; Said feedback signal parallel connection pick-up circuit output is connected with the feedback transformer input, and said feedback transformer output is connected with the power amplification circuit input.
The basic design of high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp of the present invention is: utilize independent feedback signal parallel connection pick-up circuit; Pick up feedback signal from major loop and to move on on the relevant branch road, make that feedback current signal reduces, harmonic wave reduces.Let feedback transformer and switching tube temperature when high power work obviously reduce.That is to say that place unique among the present invention is the innovation of mode that feedback signal in the former auto-excitation type circuit is picked up.Former mode feedback signal is from the major loop of vibration and output circuit, to pick up to obtain; Will be when feedback signal is picked up through the total current and whole harmonic waves of charge and discharge process; Feedback transformer and switching tube temperature when making whole frequency converter high power work are very high; Cause former auto-excitation type electric frequency converter power consumption bigger than normal, temperature rise is higher.Mentality of designing of the present invention is exactly to pick up feedback signal from major loop to move on on the relevant branch road, feedback signal that Here it is parallel connection pick-up circuit.Secondary n6 and coil PL, capacitor P c1, capacitor P c2, resistance PR through choking-winding form feedback signal parallel connection pick-up circuit; N6 obtains feedback signal from major loop; Stop that through PL, Pc1 parallel network most of harmonic wave passes through; When capacitor P c2 arrived n3, feedback current signal reduced, and harmonic wave reduces.Finally make feedback transformer and switching tube temperature when high power work obviously reduce.
Filter circuit described in the present invention can effectively reduce conducted interference and the radiated interference that each harmonic wave deal forms, and has avoided the pollution to electrical network.Rectification circuit of the present invention can be with the about 190V direct current of output after the filtering of commercial power rectification; This direct current is proofreaied and correct by power factor correction circuit; Thereby make the waveform basically identical of input current waveform and input voltage (commutating voltage); Current harmonics is significantly reduced, and power factor (PF) can be brought up to more than 0.95, has effectively avoided rectifier to reduce and cause the AC side line voltage to produce shortcomings such as distortion easily from electrical network absorbing reactive power, rectification efficiency.
When using device of the present invention; Can the vibration of this high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp and output circuit and electrodeless florescent lamp be coupled outward; External AC power output DC after rectification circuit rectification, filtering is proofreaied and correct to power factor correction circuit, and then, the power factor correction circuit output DC is to delay trigger circuit; At this moment, delay trigger circuit produce a trigger impulse add to power amplification circuit and output to the vibration and output circuit.The network charging of vibration and output circuit, feedback signal parallel connection pick-up circuit is obtained feedback signal through coupling, makes the power amplification circuit conducting; Series resonant network produces free harmonic vibration, and in this process, vibration and output circuit are controlled at operating frequency in the 200KHz-300KHz all the time; The feedback transformer circuit feedback signal makes two metal-oxide-semiconductor alternate conduction in the power amplification circuit; Keep vibration, and in the electrodeless fluorescent fluorescent tube, enough power is provided, it is luminous to keep electrodeless florescent lamp.
With the coupling unit of electrodeless florescent lamp, can adopt mode such as magnet ring induction coil to export usually during the work of above-mentioned in the present invention vibration and output circuit for it provides energy.
Safety for circuit arrangement; Can also install safety structure additional in the high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp of the present invention; Said safety structure can be served as by existing fuse, protective tube etc., also can be served as by similar structures such as air switches.
Compare with aforementioned existing like product, when high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp of the present invention uses, can effectively reduce the power consumption and the temperature rise of frequency-variable electronic device self in high-power electrodeless lamp, thereby reduce the ratio that damages greatly.This frequency-variable electronic device stable performance, circuit be simple, be easy to large-scale industrial production, with low cost and can effectively prolong electrodeless florescent lamp useful life.
Content of the present invention combines following examples to do explanation further, but content of the present invention is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is the circuit block diagram of high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp among the embodiment.
Fig. 2 is a circuit diagram.
Embodiment
As shown in Figure 1; High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp described in the present embodiment has filter circuit 1, rectification circuit 2, power factor correction circuit 3, delay trigger circuit 4, power amplification circuit 5, choking-winding 6, vibration and output circuit 7, feedback transformer 8; Said filter circuit 1 has filter circuit input and filter circuit output; Said rectification circuit 2 has rectification circuit input end and rectification circuit output end; Said power factor correction circuit 3 has power factor correction circuit input and power factor correction circuit output; Said delay trigger circuit 4 has power input and delay trigger circuit output; Said power amplification circuit 5 has power amplification circuit input and power amplification circuit output, and said choking-winding 6 has choking-winding input and choking-winding output, and said vibration and output circuit 7 have vibration and output circuit input; Said feedback transformer 8 has feedback transformer input and feedback transformer output; It is characterized in that having feedback signal parallel connection pick-up circuit 9, said feedback signal parallel connection pick-up circuit 9 has feedback signal parallel connection pick-up circuit input and feedback signal parallel connection pick-up circuit output, and said choking-winding 6 has the parallel connection of choking-winding feedback signal and picks up end; Said filter circuit output is connected with rectification circuit input end; Said rectification circuit output end is connected with the power factor correction circuit input, and said power factor correction circuit output is connected with said delay trigger circuit power input, and said delay trigger circuit output is connected with the power amplification circuit input; Said power amplification circuit output is connected with vibration and output circuit input; The parallel connection of said choking-winding feedback signal is picked up end and is connected with feedback signal parallel connection pick-up circuit input, and said feedback signal parallel connection pick-up circuit output is connected with the feedback transformer input, and said feedback transformer output is connected with the power amplification circuit input.
As shown in Figure 2, in the present embodiment, filter circuit is made up of protective tube BA, NTC resistance R n, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, inductance coil L1, inductance coil L2 and piezo-resistance Ry.
In the present embodiment, rectification circuit is made up of diode D1-D4, capacitor C 5.
In the present embodiment, power factor correction circuit is made up of resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 13, capacitor C 6, capacitor C 12, capacitor C 13, capacitor C 14, capacitor C 15, diode D5, diode D12, metal-oxide-semiconductor Tr1, power factor (PF) preconditioning integrated package MC33262, coil n1, coil n2.
In the present embodiment, delay trigger circuit is made up of resistance R 11, resistance R 12, capacitor C 7, capacitor C 16, diode D7.
In the present embodiment, power amplification circuit is made up of metal-oxide-semiconductor Tr2, metal-oxide-semiconductor Tr3, resistance R 14, resistance R 15, resistance R 16, resistance R 17, capacitor C 17, capacitor C 18, diode D8, diode D9, diode D10, diode D11, capacitor C 11.
In the present embodiment, choking-winding is made up of inductance coil L3.
In the present embodiment, vibration and output circuit by capacitor C 10,, inductance coil L4 constitutes.
In the present embodiment, feedback signal parallel connection pick-up circuit is made up of coil n6, resistance PR, coil PL, capacitor P C1, PC2.
In the present embodiment, feedback transformer is made up of coil n3, coil n4, coil n5.
During high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp in using present embodiment; Earlier the vibration of this high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp and the magnetic ring coil of output circuit are enclosed within outside the electrodeless fluorescent fluorescent tube; (electrodeless florescent lamp that here uses is to charge into argon mixture gas and small amount of mercury metallic element in the pipe; Inside pipe wall applies the high-power electrodeless fluorescent fluorescent tube that three primary colors fluorescent powder is processed); The alternating current of outside input is successively after the power circuit rectification that filter circuit, rectification circuit and power factor correction circuit constitute; Produce trigger impulse through delay trigger circuit; The circuits for triggering output that warp is connected with the power amplification circuit input outputs to power amplification circuit, and power amplification circuit will pass through the power amplification circuit output that the electric current warp after the processing and amplifying is connected with vibration and output circuit input and transfer to vibration and output circuit then, and the energy after the vibration that the vibration of this moment and output circuit will produce is coupled in the electrodeless florescent lamp; Electrodeless florescent lamp is based on the principle of radio frequency induction discharge; In pipe, produce the electrodless discharge plasma, provide enough power to keep discharge, make mercury atom be excited to produce ultraviolet ray excited fluorescent material and send visible light by vibration and output circuit.In this process; Vibration and output circuit are controlled at operating frequency in 200KHz～300KHz all the time; And keep vibration; Thereby, let electrodeless florescent lamp work the time does not have stroboscopic, power consumptive province, luminous mass is high, power factor (PF) is high, conducted interference is low and radiated interference is low for electrodeless florescent lamp provides stable energy source.
Existing the operation principle and the process of high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp in the present embodiment are summarized as follows:
External AC power in rectification circuit diode D1-D4 rectification after after capacitor C 5 filtering about 190V direct current of output proofread and correct to the power factor (PF) preconditioning integrated package MC33262 of power factor correction circuit; It specifically is the direct current of main circuit output is sent into power factor (PF) preconditioning integrated package MC33262 through resistance R 10, resistance R 6 and resistance R 5 voltage after partial of power factor correction circuit the 1st foot; 190V direct current through filter circuit and rectification circuit output is sent into power factor (PF) preconditioning integrated package MC33262 the 3rd foot through resistance R 2, resistance R 3 and resistance R 4 voltage after partial of power factor correction circuit, sends into the 4th foot of power factor (PF) preconditioning integrated package MC33262 after the switched-current sampled of the metal-oxide-semiconductor Tr1 of power factor correction circuit.Break-make by control metal-oxide-semiconductor Tr1 after the power factor (PF) preconditioning integrated package MC33262 inter-process; Thereby make the waveform basically identical of input current waveform (current waveform of coil n1) and input voltage (commutating voltage); Current harmonics is significantly reduced, and input power factor can be brought up to more than 0.97.The output of coil n1 in the power factor correction circuit is through diode D12 rectification; Output 400V direct current produces the grid that a trigger impulse adds to the metal-oxide-semiconductor Tr3 of power amplification circuit to the delay trigger circuit that resistance R 11, capacitor C 7, resistance R 12, capacitor C 16 and diode D7 form after capacitor C 6 filtering, makes metal-oxide-semiconductor Tr3 conducting and outputs to vibration and output circuit.The D-S utmost point of direct current through vibration and the shunt-resonant circuit (capacitor C 10, inductance coil L4) of output circuit, inductance coil L3, capacitor C 11, metal-oxide-semiconductor Tr3 constitutes the loop and gives inductance coil L4, capacitor C 10, the charging of inductance coil L3 network; Because the feedback signal that the coil n6 of feedback signal parallel connection pick-up circuit obtains is through the coupling of n3, n5; Make the D-S utmost point conducting of the metal-oxide-semiconductor Tr2 in the power amplification circuit; And discharge for inductance coil L4, capacitor C 10, inductance coil L3 network in vibration and the output circuit; Series resonant network produces free harmonic vibration; The electrodeless fluorescent tube of inductance coil L4, capacitor C 10 and work is controlled at operating frequency in the 200KHz-300KHz, and the coil n4 of feedback transformer, coil n5 make metal-oxide-semiconductor Tr2 and the metal-oxide-semiconductor Tr3 alternate conduction in the power amplification circuit, keep vibration; And enough power is provided in the electrodeless fluorescent fluorescent tube, it is luminous to keep electrodeless florescent lamp.
Claims (1)
1. high-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp; Have filter circuit, rectification circuit, power factor correction circuit, delay trigger circuit, power amplification circuit, choking-winding, vibration and output circuit, feedback transformer; Said filter circuit has filter circuit input and filter circuit output; Said rectification circuit has rectification circuit input end and rectification circuit output end; Said power factor correction circuit has power factor correction circuit input and power factor correction circuit output; Said delay trigger circuit has power input and delay trigger circuit output; Said power amplification circuit has power amplification circuit input and power amplification circuit output, and said choking-winding has choking-winding input and choking-winding output, and said vibration and output circuit have vibration and output circuit input; Said feedback transformer has feedback transformer input and feedback transformer output; It is characterized in that having feedback signal parallel connection pick-up circuit, said feedback signal parallel connection pick-up circuit has feedback signal parallel connection pick-up circuit input and feedback signal parallel connection pick-up circuit output, and said choking-winding has the parallel connection of choking-winding feedback signal and picks up end; Said filter circuit output is connected with rectification circuit input end; Said rectification circuit output end is connected with the power factor correction circuit input, and said power factor correction circuit output is connected with said delay trigger circuit power input, and said delay trigger circuit output is connected with the power amplification circuit input; Said power amplification circuit output is connected with vibration and output circuit input; The parallel connection of said choking-winding feedback signal is picked up end and is connected with feedback signal parallel connection pick-up circuit input, and said feedback signal parallel connection pick-up circuit output is connected with the feedback transformer input, and said feedback transformer output is connected with the power amplification circuit input; Said feedback signal parallel connection pick-up circuit is made up of coil n6, resistance PR, coil PL, capacitor P C1, PC2; Feedback signal parallel connection pick-up circuit input n6 obtains feedback signal from major loop, stop that through PL, PC1 parallel network most of harmonic wave passes through, and PC2 arrives feedback transformer input coil n3 through feedback signal parallel connection pick-up circuit output capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100580720A CN101466191B (en) | 2009-01-08 | 2009-01-08 | High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100580720A CN101466191B (en) | 2009-01-08 | 2009-01-08 | High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101466191A CN101466191A (en) | 2009-06-24 |
| CN101466191B true CN101466191B (en) | 2012-07-04 |
Family
ID=40806482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100580720A Expired - Fee Related CN101466191B (en) | 2009-01-08 | 2009-01-08 | High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101466191B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101965092A (en) * | 2009-07-24 | 2011-02-02 | 李懋源 | Power controller for digital variable-capacitance electrodeless lamps |
| CN104981064A (en) * | 2015-06-23 | 2015-10-14 | 成都亿信标准认证集团有限公司 | Simple and practical harmonic wave improved LED drive circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5612594A (en) * | 1995-09-13 | 1997-03-18 | C-P-M Lighting, Inc. | Electronic dimming ballast feedback control scheme |
| US5880564A (en) * | 1996-05-15 | 1999-03-09 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh | High-frequency operating circuit for a low-pressure discharge lamp with improved electromagnetic compatibility |
| CN2792089Y (en) * | 2005-05-09 | 2006-06-28 | 南京大生电力节能设备有限公司 | Fluorescent lamp ballast |
| CN201156841Y (en) * | 2008-02-27 | 2008-11-26 | 王家诚 | High power self-activating high frequency electronic blast |
| CN201332532Y (en) * | 2009-01-08 | 2009-10-21 | 王家诚 | High-frequency electronic frequency converter of high-power parallel auto-excitation type non-polar fluorescent lamp |
-
2009
- 2009-01-08 CN CN2009100580720A patent/CN101466191B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5612594A (en) * | 1995-09-13 | 1997-03-18 | C-P-M Lighting, Inc. | Electronic dimming ballast feedback control scheme |
| US5880564A (en) * | 1996-05-15 | 1999-03-09 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh | High-frequency operating circuit for a low-pressure discharge lamp with improved electromagnetic compatibility |
| CN2792089Y (en) * | 2005-05-09 | 2006-06-28 | 南京大生电力节能设备有限公司 | Fluorescent lamp ballast |
| CN201156841Y (en) * | 2008-02-27 | 2008-11-26 | 王家诚 | High power self-activating high frequency electronic blast |
| CN201332532Y (en) * | 2009-01-08 | 2009-10-21 | 王家诚 | High-frequency electronic frequency converter of high-power parallel auto-excitation type non-polar fluorescent lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101466191A (en) | 2009-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101466191B (en) | High-frequency electronic frequency changer of high-power parallel connection selfexciting electrodeless florescent lamp | |
| CN101600287B (en) | Automatic control method of the output power of gas discharge lamp and electronic ballast | |
| CN201332532Y (en) | High-frequency electronic frequency converter of high-power parallel auto-excitation type non-polar fluorescent lamp | |
| CN101494423A (en) | Active soft switch semi-bridge method | |
| CN101370344A (en) | Ballast of electronic resonance fluorescent lamp | |
| CN207665264U (en) | A kind of electric ballast and Non-polarized lamp | |
| CN201438777U (en) | Electrodeless lamp high frequency generator circuit | |
| CN101820714B (en) | Start protection and intelligent control interface circuit for low frequency electrodeless lamp | |
| CN201156841Y (en) | High power self-activating high frequency electronic blast | |
| CN1674757B (en) | Electromagnetic inductive lamp circuit | |
| CN101730361B (en) | Digital electronic ballast circuit for gas discharge cold light source lamp | |
| CN102685997B (en) | High-frequency HID (High Intensity Discharge) electronic ballast with modulated power frequency | |
| CN2901781Y (en) | Independent-excited electronic ballast of no polar fluorescence lamp | |
| CN203788535U (en) | Ballast circuit for solar direct-current electrodeless lamp | |
| CN202841669U (en) | Novel electrodeless lamp ballast circuit | |
| CN2879591Y (en) | Electronic ballasts | |
| CN200956680Y (en) | Self-excited high-frequency electronic ballast for poleless fluorescent lamp | |
| CN201700072U (en) | High-voltage direct current electrodeless lamp | |
| CN201294672Y (en) | Electronic resonance fluorescent lamp ballast | |
| CN201119089Y (en) | Built-in daylight lamp energy-saving device | |
| CN202068632U (en) | Electrodeless lamp ballast with low cost | |
| CN201606836U (en) | Cluster type compact electrodeless lamp system | |
| CN201039564Y (en) | A general power electronic rectifier for T5 lamp tube | |
| CN2346141Y (en) | High-performance high-tension sodium lamp electronic ballast | |
| CN101711085A (en) | Assembly type compact stepless lamp system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20120704 Termination date: 20180108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |