CN201657462U - Drive circuit for electrodeless lamp - Google Patents
Drive circuit for electrodeless lamp Download PDFInfo
- Publication number
- CN201657462U CN201657462U CN2010202089214U CN201020208921U CN201657462U CN 201657462 U CN201657462 U CN 201657462U CN 2010202089214 U CN2010202089214 U CN 2010202089214U CN 201020208921 U CN201020208921 U CN 201020208921U CN 201657462 U CN201657462 U CN 201657462U
- Authority
- CN
- China
- Prior art keywords
- capacitor
- circuit
- electrodeless lamp
- drive circuit
- inductor
- 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 utility model relates to a drive circuit for an electrodeless lamp, which comprises a filter circuit, a rectification circuit, a PFC circuit and a load drive circuit, wherein an external AC power supply is converted into a DC power supply through the filter circuit and the rectification circuit, adjusts power factor correction through the PFC circuit, and then is connected with the load drive circuit, so as to do work on the electrodeless lamp; the filter circuit comprises a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23, an inductor LF1 and an inductor LF2, the two terminals of the capacitor C20 are connected with the input terminals of the external AC power supply and the inductor LF1 respectively, the capacitor C21 and the capacitor C22 are connected in series and then connected with the output terminal of the inductor LF1 and the input terminal of the inductor LF2 respectively, the output terminal of the inductor LF2 is connected with the input terminals of the capacitor C23 and the rectification circuit, and the intermediate series connection point of the capacitor C21 and the capacitor C22 is an earthing terminal; and the capacitor C20 is connected in parallel with a voltage dependent resistor VSR1. By the adoption of the structure, the drive circuit for the electrodeless lamp with a simple and reasonable structural design can eliminate differential and serial mode interference and handle the surging ring wave effectively, and has strong electromagnetic interference resistance capability.
Description
Technical field
The utility model belongs to the electrical equipment control technical field, is specifically related to a kind of electrodeless lamp drive circuit.
Background technology
Existing electrodeless lamp drive circuit, anti-differential mode, series mode interference ability, and relatively poor to surge ring ripple disposal ability, because external power source usually is being mingled with surge ring ripple,, easily late-class circuit is caused damage if can not effectively handle.In addition, existing electrodeless lamp drive circuit electromagnetic interference (EMI) is serious, though adopt special anti-electromagnetic interference circuit can effectively reduce electromagnetic interference, needs the extra cost that increases.
Summary of the invention
The purpose of this utility model is to provide a kind of structural design advantages of simple, can effectively removes differential mode, series mode interference and effectively handle surge ring ripple and the strong electrodeless lamp drive circuit of anti-electromagnetic interference capability.
The purpose of this utility model is achieved in that a kind of electrodeless lamp drive circuit, it is characterized in that: comprise filter circuit, rectification circuit, pfc circuit, load driving circuits, external power source is converted into DC power supply through filter circuit, rectification circuit, carries out power factor (PF) through pfc circuit and imitates and to connect load driving circuits just more electrodeless lamp is done work.
Described filter circuit comprises capacitor C 20, capacitor C 21, capacitor C 22, capacitor C 23 and common mode inductance LF1, common mode inductance LF2, capacitor C 20 two ends are connected with the input of external ac power source with common mode inductance LF1 respectively, connect the output of common mode inductance LF1 and the input of common mode inductance LF2 respectively after capacitor C 21, capacitor C 22 series connection, the output of common mode inductance LF2 connects the input of capacitor C 23, rectification circuit respectively, and the intermediate point of described capacitor C 21, capacitor C 22 series connection is an earth terminal.
The two ends of described capacitor C 20 a piezo-resistance VSR1 in parallel.
Good effect of the present utility model: capacitor C 20, capacitor C 23 are formed differential mode with common mode inductance L F1, common mode inductance LF2 respectively, series mode noise suppresses circuit, and like this, differential mode, series mode interference is easier is bypassed by decoupling capacitor.
Because the voltage drop at input two ends and late-class circuit can produce common-mode noise and disturb, form common-mode noise by common mode inductance LF1, common mode inductance LF2, capacitor C 21, capacitor C 22 and suppress circuit.Form double-smoothing with the filtering of common mode disturbances composition by common mode inductance LF1, common mode inductance LF2 common mode inductance, switch to the earth by capacitor C 21, capacitor C 22 again, GND is chassics earth, and all common mode disturbances compositions are returned the earth.Thereby reduce impure to electrical network greatly.Also reduced electromagnetic interference (EMI).
As further improvement of the utility model, its resistance sharply reduces when utilizing piezo-resistance VSR (metal oxide piezo-resistance) to have the super nominal value of both end voltage, and the characteristic that electric current sharply increases prevents the damage of surge ring ripple to late-class circuit, and this circuit spy has increased the appearance that VSR1 (piezo-resistance) prevents the surge ripple.
Description of drawings
Fig. 1 is electrodeless lamp drive circuit functional-block diagram;
Fig. 2 is filter circuit construction figure;
Fig. 3 is filtering, rectification, the pfc circuit structure chart of electrodeless lamp drive circuit;
Fig. 4 is the load driving circuits structure chart of electrodeless lamp drive circuit.
Embodiment
Be described in further detail below in conjunction with the embodiment of accompanying drawing the electrodeless lamp drive circuit of the utility model.
Execution mode: shown in Fig. 1-4, electrodeless lamp drive circuit described in the utility model, mainly form by filter circuit 1, rectification circuit 2, pfc circuit 3, load driving circuits 4, external power source is converted into DC power supply through filter circuit 1, rectification circuit 2, carries out the power factor (PF) effect through pfc circuit 3 and connects 4 pairs of electrodeless lamps actings of load driving circuits just again.Filter circuit 1 comprises capacitor C 20, capacitor C 21, capacitor C 22, capacitor C 23, piezo-resistance VSR1 and common mode inductance LF1, common mode inductance LF2, two ends are connected with the input of external ac power source with common mode inductance LF1 respectively after capacitor C 20 and the piezo-resistance VSR1 parallel connection, connect the output of common mode inductance LF1 and the input of common mode inductance LF2 respectively after capacitor C 21, capacitor C 22 series connection, the output of common mode inductance LF2 connects the input of capacitor C 23, rectification circuit respectively, and the intermediate point of capacitor C 21, capacitor C 22 series connection is an earth terminal.
, be rectified into direct voltage and be input to chopper circuit (pfc circuit, PFC is for being power factor effect positive circuit) by full-wave rectifying circuit D1 input through filtered 220V alternating current, pfc circuit mainly is made up of peripheral cells such as TV1, T1, IC1.Line voltage directly enters pfc circuit is about the 100KHz frequency by T1, TV1 copped wave copped wave alternating voltage without capacitor charge and discharge after full-wave rectification.Cause is capacitor charge and discharge not, so only used the positive half cycle of the pulsation of alternating voltage, electric current changes with change in voltage, and the high electric current of voltage is big, and the voltage negative half cycle stops, and electric current does not have.So electric current and voltage homophase.On electrical network, see to be considered as pure resistive loads, can solve more than the raising (0.95-0.99) of power factor.But the electric current and voltage of this moment does not fit into back level load.
Above circuit is the pfc circuit of being made up of T1, TV1, IC1, and it is the AC chopping voltage that is chopped into the 100KHz frequency by the positive pulsating voltage of rectification circuit D1 output through T1 to TV1.The IC1 control circuit is operated in (DCM pattern) under the DCM.The alternating voltage of 100KHz directly infeeds the back level after by rectifier diode D4, filter capacitor C6 rectifying and wave-filtering.IC is operated in the DCM mode state.By 1 pin of IC, the sample circuit that resistance R 15, R16, R17 form guarantees that the output voltage clamper is at the 400V direct voltage.Be that line voltage variation (140V-270V) output voltage remains unchanged.Thereby also being maintained to civil power changes not draw and rings electrodeless lamp normal operation.Because of having designed pfc circuit, make loaded work piece under the pure resistive state, not only solved the power factor raising, simultaneously also solved the problem of electromagnetic interference (EMI), electromagnetic compatibility (EMC).Because input voltage will reduce the pressure drop of circuit, and can reduce the capacity of filter capacitor significantly than high behind the direct rectifying and wave-filtering of line voltage, reduce cost.
The half-bridge acting circuit that 400V direct voltage after the copped wave rectification is made up of TV2, TV3 through the drain electrode input of TV2.It is luminous with the electrodeless lamp of acting driven of lower frequency to promote 300KHz of output by transformer T2 again.IC2, T3 are the open loop type drive circuit.
Claims (3)
1. electrodeless lamp drive circuit, it is characterized in that: comprise filter circuit (1), rectification circuit (2), pfc circuit (3), load driving circuits (4), external power source is converted into DC power supply through filter circuit (1), rectification circuit (2), carries out power factor (PF) through pfc circuit (3) and imitates and to connect load driving circuits (4) just more electrodeless lamp is done work.
2. electrodeless lamp drive circuit according to claim 1, it is characterized in that: described filter circuit (1) comprises capacitor C 20, capacitor C 21, capacitor C 22, capacitor C 23 and common mode inductance LF1, common mode inductance LF2, capacitor C 20 two ends are connected with the input of external ac power source with common mode inductance LF1 respectively, capacitor C 21, connect the output of common mode inductance LF1 and the input of common mode inductance LF2 respectively after capacitor C 22 series connection, the output of common mode inductance LF2 connects capacitor C 23 respectively, the input of rectification circuit, described capacitor C 21, the intermediate point of capacitor C 22 series connection is an earth terminal.
3. electrodeless lamp drive circuit according to claim 2 is characterized in that: the two ends of described capacitor C 20 a piezo-resistance VSR1 in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202089214U CN201657462U (en) | 2010-05-24 | 2010-05-24 | Drive circuit for electrodeless lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202089214U CN201657462U (en) | 2010-05-24 | 2010-05-24 | Drive circuit for electrodeless lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201657462U true CN201657462U (en) | 2010-11-24 |
Family
ID=43122689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202089214U Expired - Fee Related CN201657462U (en) | 2010-05-24 | 2010-05-24 | Drive circuit for electrodeless lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201657462U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107565831A (en) * | 2017-09-10 | 2018-01-09 | 长沙方星腾电子科技有限公司 | A kind of current rectifying and wave filtering circuit |
| CN108737072A (en) * | 2018-05-24 | 2018-11-02 | 王逸人 | A kind of remote controlled safety-type Internet control system |
-
2010
- 2010-05-24 CN CN2010202089214U patent/CN201657462U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107565831A (en) * | 2017-09-10 | 2018-01-09 | 长沙方星腾电子科技有限公司 | A kind of current rectifying and wave filtering circuit |
| CN108737072A (en) * | 2018-05-24 | 2018-11-02 | 王逸人 | A kind of remote controlled safety-type Internet control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202603010U (en) | Driving circuit of compatible LED (Light Emitting Diode) lamp tube | |
| CN103025009A (en) | Light-emitting diode (LED) driving control circuit | |
| CN107148113B (en) | A kind of LED drive circuit for T-type fluorescent tube | |
| CN201657462U (en) | Drive circuit for electrodeless lamp | |
| CN207216474U (en) | A kind of current sample change-over circuit and LED constant current power supply | |
| CN201717794U (en) | Capacitor voltage reducing circuit using impedance input filter | |
| CN201018418Y (en) | Liftable current type AC-AC convertor | |
| CN102088814B (en) | Low-frequency electrodeless lamp drive circuit with open-circuit protection function | |
| CN202335026U (en) | LED (light-emitting diode) drive circuit and LED drive chip | |
| CN102695347B (en) | Power supply circuit for electronic ballast control chip | |
| CN201383896Y (en) | Electronic ballast of fluorescent lamp | |
| CN203278653U (en) | Direct current charging module of full bridge phase shift soft switch | |
| CN206498565U (en) | A kind of LED drive power | |
| CN101925244B (en) | Ballast circuit for high-frequency electrode-less fluorescent lamp | |
| CN201750614U (en) | High power factor electronic ballast for high intensity gas-discharging lamp | |
| CN205005320U (en) | Driving circuit of light -emitting diode (LED) fluorescent tube | |
| CN203872421U (en) | DC 12V-48V wide-voltage large-power electrodeless lamp ballast | |
| CN203788181U (en) | Half-bridge type power converter with APFC function | |
| CN204045189U (en) | Small size color screen backlight control circuit | |
| CN206498569U (en) | A kind of high-power LED driving power source | |
| CN207241475U (en) | A kind of wireless charging system for electric automobile | |
| CN201213326Y (en) | Cold-starting power circuit for electrodeless lamp | |
| CN205986802U (en) | Adopt capacitor filter output and front and back level ground to keep apart electronic switching circuit who sets up | |
| CN205611014U (en) | High power factor's LED street lighting | |
| CN219145675U (en) | LED power supply circuit compatible with mains supply and ballast input |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20120524 |