CN201114931Y - Electronic ballast for small power metal halogen lamp - Google Patents
Electronic ballast for small power metal halogen lamp Download PDFInfo
- Publication number
- CN201114931Y CN201114931Y CNU200720112860XU CN200720112860U CN201114931Y CN 201114931 Y CN201114931 Y CN 201114931Y CN U200720112860X U CNU200720112860X U CN U200720112860XU CN 200720112860 U CN200720112860 U CN 200720112860U CN 201114931 Y CN201114931 Y CN 201114931Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- halogen lamp
- metal halogen
- power metal
- voltage
- 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
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The utility model discloses a low power metal halide lamp electronic ballast, comprising a direct current boosting circuit, a rectifier circuit, a full bridge inverter circuit, a high voltage triggering circuit and a control circuit; the whole circuit is controlled by a single chip microcomputer, and a control pulse of the direct current boosting circuit PWM and a low frequency control pulse of the full bridge inverter are produced by the single chip microcomputer. The low power metal halide lamp electronic ballast has the advantages of small volume, light weight, and high efficiency, which can realize quick start-up of the metal halide lamp, etc.
Description
Technical field
The utility model relates to a kind of electric ballast that is used for the small-power Metal halogen lamp, and it plays the ballast effect when Metal halogen lamp is worked, and belongs to the illumination electronic product.
Background technology
Metal halide lamp (abbreviation Metal halogen lamp) is the energy-efficient green light source of the third generation after incandescent lamp and fluorescent lamp, the luminous efficiency of Metal halogen lamp is 4 times of tungsten halogen lamp, life-span is 10 times of tungsten halogen lamp, and color rendering is better, therefore is the perfect light source that substitutes traditional tungsten halogen lamp.The same with other traditional high-intensity gas discharge lamp (being called for short the HID lamp), Metal halogen lamp has dynatron effect, must join ballast when therefore using and could work.Because what existing Metal halogen lamp used all is inductance type ballast, not only volume is big for it, Heavy Weight, and efficient is extremely low, can not start fast.
Summary of the invention
Technical problem to be solved in the utility model is to propose that a kind of volume is little, in light weight, efficient is high, can realize the small-power metal halogen lamp electric ballast that Metal halogen lamp starts fast.
For solving the problems of the technologies described above, the utility model small-power metal halogen lamp electric ballast comprises DC voltage booster circuit, rectification circuit, full bridge inverter, high-voltage triggering circuit and control circuit, entire circuit is all by a slice Single-chip Controlling, and single-chip microcomputer produces the PWM control impuls of DC voltage booster circuit and the low frequency control impuls of full-bridge inverter.
Above-mentioned small-power metal halogen lamp electric ballast, described DC voltage booster circuit adopts the single-ended flyback booster circuit, by high frequency transformer T
1, switching tube M
2, diode D
2With filter capacitor C
4Link to each other and form.
Above-mentioned small-power metal halogen lamp electric ballast, described single-chip microcomputer links to each other with the two ends of described full bridge inverter respectively by resistance R 3, R4, R5.
Above-mentioned small-power metal halogen lamp electric ballast, described rectification circuit constitutes low-pass filter circuit by L1, L2, C1, C2, C3, by metal-oxide-semiconductor M
1Constitute input protection to error-polarity connection circuit.
The utility model during work, boosts the DC12V input voltage earlier owing to adopted technique scheme with DC voltage booster circuit, start moment at Metal halogen lamp and boost to 400V, mainly is convenient to high pressure and triggers.And when Metal halogen lamp entered stable state, the booster circuit output voltage was reduced to (for Metal halogen lamp pipe rated operational voltage) about 85V, and output voltage behind fast extensive diode rectification, becomes galvanic current again.In order to eliminate the acoustic resonance frequency phenomenon of Metal halogen lamp, Metal halogen lamp adopts the 200-500HZ square wave drive, and has added one-level low frequency full bridge inverter circuit for this reason.When utilizing the DC voltage booster circuit output open circuit, the transformer secondary produce up to the above peak voltage of 600V, charge to triggering electric capacity by isolating diode, when the electric capacity both end voltage surpasses 600V, high-voltage discharge tube punctures, and electric capacity is to the former edge discharge of high voltage package, is coupling in secondary through high voltage package and produces high pressure more than the 25KV, this high pressure directly is added in the two ends of Metal halogen lamp pipe, will start Metal halogen lamp immediately and start working.Therefore, the utility model electric ballast can play the ballast effect when Metal halogen lamp is worked, and can accelerate the start-up course of Metal halogen lamp.It has that volume is little, in light weight, efficient is high, can realize Metal halogen lamp advantage such as startups fast, and its weight is to have 1/5th of inductance type ballast now, and efficient is up to 85%.Adopt the single-ended flyback booster circuit, the above peak voltage of the 600V that produces during underloading triggers the electric capacity charging to high pressure, has dwindled the volume of conventional high-tension bag.Single-chip microcomputer is by the input voltage and the input current of resistance R 3, R4, R5 sampling full-bridge inverter, can estimate when headlight power, and compare the PWM pulsewidth of regulating the DC-DC converter then with set point, carry out permanent power control, thereby prolonged the useful life of Metal halogen lamp.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment:
As shown in Figure 1, the utility model 10W small-power metal halogen lamp electric ballast is made up of rectification circuit (input filtering and polar protective circuit), DC voltage booster circuit, low frequency full bridge inverter circuit, high-tension ignition circuit (also being high-voltage triggering circuit) and control circuit five major parts.
1, DC voltage booster circuit
Metal halogen lamp stable state rated lamp power only is 10W, the single-ended flyback booster circuit that optional for this reason circuit structure is simple, element is few.This partial circuit is mainly by high frequency transformer T
1, switching tube M
2, diode D
2, filter capacitor C
4Form.Obtain when Metal halogen lamp is started more high-powerly, reach the purpose of quick startup, can adopt two kinds of methods: a kind of is the control impuls of widening booster circuit, and this method control circuit is simple, but long-time broad pulse drives, and easily causes switching tube to damage; Another kind method is to adopt variable frequency starting, reduces switching frequency when promptly starting, thereby obtains high-power start, and the utility model adopts frequency variation method.
2, low frequency full bridge inverter circuit
Metal halide lamp easily extinguishes when starting, and acoustic resonance frequency easily takes place during stable state, and the consistency of domestic automobile Metal halogen lamp is also relatively poor in addition, so the utility model employing full-bridge type inverter circuit, and it is mainly by M
3, M
4, M
5, M
6Constitute bridge inverter main circuit, by single-chip microcomputer IC
1Produce two-way inversion pulse, by IC
3, IC
4Drive and amplify, the reverse frequency during stable state is 400HZ.
3, high-tension ignition circuit (being high-voltage triggering circuit)
Ignition voltage needs about 5KV during the Metal halogen lamp cold conditions, when hot ignition voltage about 22KV, in order to produce the 22KV high pressure, commonly used at present at step-up transformer T
1Secondary add step-up coil, perhaps with secondary independently transformer constitute firing circuit, the shortcoming of these two kinds of methods is to have increased the complexity and the step-up transformer T of circuit
1Volume.We know, the single-ended flyback converter will form very high peak voltage in switch moment of each switch periods at the load open circuit state, therefore, this circuit utilize this peak voltage pulse (＞600V), pass through capacitor C
5, D
3To C
6Capacitor C is worked as in charging
6When last voltage reaches the 600V left and right sides, gas discharge tube D
4Puncture, thereby at transformer T
2Former limit adds a 600V voltage, by transformer coupled, produces the pulse voltage more than the 22KV at its secondary.
4, control circuit
Control circuit is except that producing the high-frequency impulse that two road low frequency full bridge inversion pulses and No. one booster circuit use; also must finish functions such as the under-voltage overvoltage protection of input, output open circuit, output short circuit protection, we select for use the single-chip microcomputer of a slice Freescale company to finish relevant calculation and control for this reason.R
1, R
2Be mainly used in the input battery voltage sampling, R
3, R
4Be mainly used in the sampling of inverter bridge DC input voitage, R
5Be mainly used in the sampling of inverter bridge direct current input current, IC
2, IC
3, IC
4Be used for pulsed drive.Lamp power is mainly according to inverter bridge input voltage V
OfWith input current I
OfValue of feedback decision, that is: P
L=V
Of* I
Of, when the lamp power P
LWhen surpassing setting power upper limit 11W, booster converter switching tube M
2The width of grid control impuls diminishes, when the lamp power P
LWhen being lower than setting power lower limit 9W, it is big that pulse duration becomes.
5, input filtering and polar protective circuit
In order to prevent electric ballast when work, especially other electronic equipment on the automobile is produced disturb starting moment, by L
1, L
2, C
1, C
2, C
3Constitute low-pass filter circuit, metal-oxide-semiconductor M
1Be mainly used in the input protection to error-polarity connection.
Claims (4)
1, small-power metal halogen lamp electric ballast, it is characterized in that, it comprises DC voltage booster circuit, rectification circuit, full bridge inverter, high-voltage triggering circuit and control circuit, entire circuit is all by a slice Single-chip Controlling, and this single-chip microcomputer produces the PWM control impuls of described DC voltage booster circuit and the low frequency control impuls of described full-bridge inverter.
2, small-power metal halogen lamp electric ballast as claimed in claim 1 is characterized in that, described DC voltage booster circuit adopts the single-ended flyback booster circuit, by high frequency transformer T
1, switching tube M
2, diode D
2With filter capacitor C
4Link to each other and form.
3, small-power metal halogen lamp electric ballast as claimed in claim 1 or 2 is characterized in that, described single-chip microcomputer links to each other with the two ends of described full bridge inverter respectively by resistance R 3, R4, R5.
4, small-power metal halogen lamp electric ballast as claimed in claim 1 or 2 is characterized in that, described rectification circuit constitutes low-pass filter circuit by L1, L2, C1, C2, C3, by metal-oxide-semiconductor M
1Constitute input protection to error-polarity connection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720112860XU CN201114931Y (en) | 2007-08-01 | 2007-08-01 | Electronic ballast for small power metal halogen lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720112860XU CN201114931Y (en) | 2007-08-01 | 2007-08-01 | Electronic ballast for small power metal halogen lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201114931Y true CN201114931Y (en) | 2008-09-10 |
Family
ID=39966682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720112860XU Expired - Fee Related CN201114931Y (en) | 2007-08-01 | 2007-08-01 | Electronic ballast for small power metal halogen lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201114931Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917812A (en) * | 2010-08-12 | 2010-12-15 | 兰卫国 | Metal halide lamp power supply and method for lighting metal halide lamp |
| CN102121951A (en) * | 2010-11-30 | 2011-07-13 | 惠州市日野电子有限公司 | Method for measuring power of halogen lamp |
| CN103426683A (en) * | 2013-08-26 | 2013-12-04 | 浙江正泰电器股份有限公司 | Time relay used for metal halide lamp loads |
| CN104661418A (en) * | 2015-02-14 | 2015-05-27 | 合肥誉联信息科技有限公司 | Electronic ballast for ceramic metal halide lamp |
-
2007
- 2007-08-01 CN CNU200720112860XU patent/CN201114931Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917812A (en) * | 2010-08-12 | 2010-12-15 | 兰卫国 | Metal halide lamp power supply and method for lighting metal halide lamp |
| CN102121951A (en) * | 2010-11-30 | 2011-07-13 | 惠州市日野电子有限公司 | Method for measuring power of halogen lamp |
| CN103426683A (en) * | 2013-08-26 | 2013-12-04 | 浙江正泰电器股份有限公司 | Time relay used for metal halide lamp loads |
| CN103426683B (en) * | 2013-08-26 | 2015-10-28 | 浙江正泰电器股份有限公司 | The time relay of Metal halogen lamp class load |
| CN104661418A (en) * | 2015-02-14 | 2015-05-27 | 合肥誉联信息科技有限公司 | Electronic ballast for ceramic metal halide lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100521859C (en) | Variable frequency preheating restartable fluorescent lamp electronic relay with abnormal protection | |
| CN101553071B (en) | Discharge lamp system and control method thereof | |
| CN101772248A (en) | General constant-power electronic ballast for high-intensity gas discharge lamp | |
| CN101610629A (en) | The electric ballast that is used for lamp | |
| CN201114931Y (en) | Electronic ballast for small power metal halogen lamp | |
| CN102326454A (en) | The electronic driver that is used for gaseous discharge lamp | |
| Orletti et al. | HID lamp electronic ballast with reduced component number | |
| CN101420811B (en) | Vehicular HID lamp ballast for implementing soft switch PWM technique based on digital control | |
| CN101472373A (en) | Mixing bridge type electric ballast | |
| CN103118473A (en) | HID (high intensity discharging lamp) electronic ballast | |
| CN101175360B (en) | High-voltage triggering circuit for ballast of vehicle xenon front lamp | |
| CN202435698U (en) | Electronic ballast of high voltage sodium lamp | |
| CN106507571B (en) | Novel direct hands over booster type single-stage high-frequency inductor electric ballast and its working method | |
| CN101658072B (en) | Circuit arrangement for igniting and operating a discharge lamp | |
| CN201303455Y (en) | Digital high-voltage sodium lamp electronic ballast | |
| CN201114945Y (en) | Electronic ballast for high-voltage discharging lamp | |
| CN201153101Y (en) | HID sending light | |
| CN201119093Y (en) | Car HID lamp ballast for realizing soft switch PWM technology based on digital control | |
| CN203934085U (en) | A kind of HID lamp electronic ballast emergency set | |
| CN203340390U (en) | Power supply circuit of HID lamp | |
| CN103347356B (en) | The method of work of HID lamp method of supplying power to and circuit used and this circuit | |
| Marchesan et al. | Double-flyback half-bridge electronic ballast to supply HPS lamps | |
| WO2007036085A1 (en) | Electronic ballast | |
| Marchesan et al. | An electronic ballast to supply automotive HID lamps in a low frequency square waveform | |
| CN2689646Y (en) | Electronic stabilizing device of vehicle headlight |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20080910 Termination date: 20150801 |
|
| EXPY | Termination of patent right or utility model |