CN2673029Y - Electronic ballast for high voltage sodium lamp - Google Patents
Electronic ballast for high voltage sodium lamp Download PDFInfo
- Publication number
- CN2673029Y CN2673029Y CN 200320108239 CN200320108239U CN2673029Y CN 2673029 Y CN2673029 Y CN 2673029Y CN 200320108239 CN200320108239 CN 200320108239 CN 200320108239 U CN200320108239 U CN 200320108239U CN 2673029 Y CN2673029 Y CN 2673029Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- frequency
- electronic ballast
- sodium lamp
- high 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
Abstract
The utility model relates to an electronic ballast for a high voltage sodium lamp. A sample circuit is arranged between a power factor correction circuit and a drive circuit, and the input end of the photoelectric coupling element of the sample circuit is connected with one leg of the control chip of the power factor correction circuit. The output end is connected with one leg of the drive chip of the high frequency high voltage power tube of the drive circuit by a resistor, and is connected with ground by a capacitor. The electronic ballast for the high voltage sodium lamp of the utility model is also provided with a high frequency isolating circuit that comprises a high-frequency transformer whose input end is connected with the output end of the DC-AC conversion circuit, and the output end of the high-frequency transformer serves as output of the electronic ballast for the high voltage sodium lamp. The utility model can make the oscillating frequency of the high frequency high voltage power tube of the drive circuit alter smoothly and ceaselessly according to a speed with certain frequency, and the oscillating frequency of the high frequency high voltage power tube of the drive circuit is not fixed at some point; therefore, the acoustic resonance phenomenon is avoided to generate. The direct current and the alternating current of the inner part of the electronic ballast are isolated in a low-frequency mode by that the high frequency isolating circuit is arranged, and the protection for the overcurrent of the high end of the electronic ballast is accomplished.
Description
Technical field
The utility model relates to electric lighting, particularly a kind of electronic ballast of high voltage sodium lamp.
Background technology
High-pressure sodium lamp has characteristics such as high light flux, high light efficiency and long-life, is considered to preferred light source in green illumination light source, and it is in operation and must be equipped with ballast and could works, and the ballast that uses at present mostly is traditional inductance type ballast.During the supporting use of this inductance type ballast and high-pressure sodium lamp, easily under certain or certain several steady job frequencies " acoustic resonance " phenomenon taking place at it, thereby make that ballast is impaired even burn, also easily causes fluorescent tube to be damaged; And high-pressure sodium lamp in use; the possible shorted to earth of its output; and general electric ballast only possesses one-sided and the low side overcurrent protection; can not protect its high-end overcurrent; when this short-circuit state takes place; electric ballast meeting blowout, even damage power tube with the protection high-pressure sodium lamp, electric ballast then can damage thus.The existence of these disadvantages of the electric ballast of high-pressure sodium lamp all directly has influence on promoting the use of of high-pressure sodium lamp.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of electronic ballast of high voltage sodium lamp is provided, and avoiding the generation of acoustic resonance phenomenon, and realizes the protection of its high-end overcurrent.
For achieving the above object, the utility model provides a kind of electronic ballast of high voltage sodium lamp, be characterized in being provided with sample circuit between its circuit of power factor correction and the drive circuit, one pin of the control chip of the input termination circuit of power factor correction of the optocoupler components of this sample circuit, output connects a pin of the high-frequency and high-voltage power tube chip for driving of drive circuit through resistance, and through capacity earth.
Described electronic ballast of high voltage sodium lamp also is provided with the high-frequency isolation circuit, the DC-AC translation circuit of this high-frequency isolation circuit one termination electronic ballast of high voltage sodium lamp, and the other end is as the output of this electronic ballast of high voltage sodium lamp.
Described high-frequency isolation circuit comprises a high frequency transformer, the output of its input termination DC-AC translation circuit, and output is as the output of electronic ballast of high voltage sodium lamp.
Described optocoupler components is a NEC2501 type photoelectrical coupler.
The control chip of described circuit of power factor correction is the L6561 cake core, and the high-frequency and high-voltage power tube chip for driving of drive circuit is the S3525 cake core.
The utility model is by being provided with sample circuit between its circuit of power factor correction and drive circuit, can be from the take a sample alternating voltage of certain frequency of circuit of power factor correction, and this voltage low frequency signal is delivered to the high-frequency and high-voltage power tube chip for driving of drive circuit, make the frequency of oscillation of power tube not stop reposefully to change by the speed of this frequency, and be not fixed on certain a bit, thereby avoid the generation of acoustic resonance phenomenon.Being provided with of resistance and electric capacity can prevent frequency discontinuity in the sample circuit, avoids causing the flicker and the job insecurity of high-pressure sodium lamp.The utility model also is provided with the output of high-frequency isolation circuit as whole electric ballast at its DC-AC translation circuit output simultaneously; this make the inner direct current of electric ballast with exchanges low frequency realization isolation; can realize when any one output difference shorted to earth of electric ballast; can protect automatically; can not burn, thereby realize the protection of its high-end overcurrent.
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is a circuit interconnect pattern of the present utility model.
Fig. 3 is the circuit interconnect pattern of sample circuit of the present utility model.
Embodiment
As shown in Figure 1, 2, the utility model electronic ballast of high voltage sodium lamp comprises lightning protection circuit and electromagnetic compatibility (EMC) circuit 1, current rectifying and wave filtering circuit 2, power factor school (PFC) circuit 3, drive circuit 4, DC-AC translation circuit 5, protective circuit 6, sample circuit 7 and high-frequency isolation circuit 8.
Civil power is delivered to current rectifying and wave filtering circuit 2 through lightning protection circuit and electromagnetic compatibility (EMC) circuit 1, becomes stable DC 400V voltage through full-wave rectification and filtering and circuit of power factor correction 3.
It is core that circuit of power factor correction 3 adopts Power Factor Correction Control chip IC 1, boost inverter is as peripheral circuit, send the pulse-triggered boost inverter by control chip IC1, make its switching frequency up to tens KHz, make that supply voltage can both output current at any instantaneous place, improve power factor.
Required high-pressure sodium lamp pulse when drive circuit 4 provides high-pressure sodium lamp to light a lamp, it adopts high-frequency and high-voltage power tube chip for driving IC2 as core.
DC-AC translation circuit 5 is according to the triggering of drive circuit 4 to it, provides high-pressure sodium lamp power supply for peak-to-peak value for the ac square-wave voltage of 400V with the dc voltage conversion of circuit of power factor correction 3 outputs.In case high-pressure sodium lamp is lighted, DC-AC translation circuit 5 just keeps normal power supply.
Protective circuit 6 adopts operational amplifier chip IC 3 as core; realize output short circuit, open-circuit-protection by the current difference of ballast under abnormality and normal operating conditions; utilize the feedback adjusting current constant, and provide the 100Hz frequency modulation of 30KHz output AC square-wave voltage to shake with inhibition sound.
Sample circuit 7 is located between circuit of power factor correction 3 and the drive circuit 4, as shown in Figure 3, the a pin of the control chip IC1 of the input termination circuit of power factor correction 3 of its optocoupler components 9, output connects the b pin of the high-frequency and high-voltage power tube chip for driving IC2 of drive circuit 4 through resistance R, and through capacitor C ground connection.This sample circuit 7 is from a pin sampling 100Hz alternating voltage of the control chip IC1 of circuit of power factor correction 3, this voltage low frequency signal is delivered to the b pin of high-frequency and high-voltage power tube chip for driving IC2 through optocoupler components 9, make the frequency of oscillation of power tube not stop reposefully to change by the speed of 100Hz, and be not fixed on certain a bit, thereby avoid the generation of acoustic resonance phenomenon.The setting of resistance R and capacitor C is in order to prevent frequency discontinuity, to avoid causing the flicker and the job insecurity of high-pressure sodium lamp in the sample circuit 7.Optocoupler components 9 is a NEC2501 type photoelectrical coupler in the utility model.
High-frequency isolation circuit 8 is arranged between DC-AC translation circuit 5 and the high-pressure sodium lamp HPS, the output of the input termination DC-AC translation circuit 5 of its high frequency transformer T2, and output is as the output of whole electric ballast.This high-frequency isolation circuit 8 adopts high frequency transformer T2 to make the inner direct current of electric ballast and exchanges low frequency realization isolation; can realize when any one output difference shorted to earth of electric ballast; can protect automatically, can not burn, thereby realize the protection of its high-end overcurrent.
The control chip IC1 of circuit of power factor correction 3 is the L6561 cake core in the utility model, and the high-frequency and high-voltage power tube chip for driving IC2 of drive circuit 4 is the S3525 cake core, and the operational amplifier chip IC 3 of protective circuit 6 is the LM324 cake core.
Claims (5)
1, a kind of electronic ballast of high voltage sodium lamp, it is characterized in that being provided with sample circuit (7) between its circuit of power factor correction (3) and the drive circuit (4), the a pin of the control chip IC1 of the input termination circuit of power factor correction (3) of the optocoupler components (9) of this sample circuit (7), output connects the b pin of the high-frequency and high-voltage power tube chip for driving IC2 of drive circuit (4) through resistance R, and through capacitor C ground connection.
2, electronic ballast of high voltage sodium lamp according to claim 1, it is characterized in that also being provided with high-frequency isolation circuit (8), the DC-AC translation circuit (5) of these high-frequency isolation circuit (8) one termination electronic ballast of high voltage sodium lamp, the other end is as the output of this electronic ballast of high voltage sodium lamp.
3, electronic ballast of high voltage sodium lamp according to claim 2, it is characterized in that described high-frequency isolation circuit (8) comprises a high frequency transformer T2, the output of its input termination DC-AC translation circuit (5), output is as the output of electronic ballast of high voltage sodium lamp.
4,, it is characterized in that described optocoupler components (9) is a NEC2501 type photoelectrical coupler according to claim 1,2 or 3 described electronic ballast of high voltage sodium lamp.
5, according to claim 1,2 or 3 described electronic ballast of high voltage sodium lamp, the control chip IC1 that it is characterized in that described circuit of power factor correction (3) is the L6561 cake core, and the high-frequency and high-voltage power tube chip for driving IC2 of drive circuit (4) is the S3525 cake core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320108239 CN2673029Y (en) | 2003-11-21 | 2003-11-21 | Electronic ballast for high voltage sodium lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320108239 CN2673029Y (en) | 2003-11-21 | 2003-11-21 | Electronic ballast for high voltage sodium lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2673029Y true CN2673029Y (en) | 2005-01-19 |
Family
ID=34474648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320108239 Expired - Fee Related CN2673029Y (en) | 2003-11-21 | 2003-11-21 | Electronic ballast for high voltage sodium lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2673029Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321423B (en) * | 2008-07-10 | 2012-05-16 | 苏州金三元照明电器有限公司 | Road lamp electric ballast |
-
2003
- 2003-11-21 CN CN 200320108239 patent/CN2673029Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321423B (en) * | 2008-07-10 | 2012-05-16 | 苏州金三元照明电器有限公司 | Road lamp electric ballast |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101527997A (en) | Two-grade full-bridge mode low-frequency square-wave driven HID lamp electronic ballast | |
| CN103220871B (en) | Sofe Switch mode low-frequency square-wave xenon lamp electric ballast | |
| CN205596389U (en) | Constant current AC drive circuit and TV set | |
| CN101772248A (en) | General constant-power electronic ballast for high-intensity gas discharge lamp | |
| CN201888006U (en) | Intelligent dimming high frequency electronic discharge lamp for road lighting | |
| CN201623911U (en) | Constant power electronic ballast for universal high-intensity gas discharge lamp | |
| CN2673029Y (en) | Electronic ballast for high voltage sodium lamp | |
| CN206422949U (en) | A kind of High Power Factor phase-cut dimming power supply | |
| CN201854494U (en) | Constant-power control electronic ballast of HID (high intensity discharge) lamp | |
| CN100531506C (en) | Electronic ballast and method for selecting its working frequency | |
| CN101541133B (en) | Split type multi-energy-saving lamp illumination system | |
| CN2829278Y (en) | LED lighting drive circuit | |
| CN102685997B (en) | High-frequency HID (High Intensity Discharge) electronic ballast with modulated power frequency | |
| CN201571249U (en) | Intelligent numerical control energy-saving dimming electronic ballast | |
| CN102026457A (en) | Ballast of high-intensity discharge (HID) lamp | |
| CN202455634U (en) | Electronic ballast of electrodeless lamp | |
| CN201577227U (en) | Electrodeless lamp with constant-power ballast | |
| CN2438295Y (en) | Low cost electronic ballast for high-power and high-intensity gas discharge lamp | |
| CN206164960U (en) | HID lamp high frequency drive circuit based on phase modulation | |
| CN203814028U (en) | Fluorescent lamp electronic ballast controlled by power line carrier waves | |
| CN2738523Y (en) | Constant-power control apparatus for compact electronic fluorescent lamp | |
| CN2612205Y (en) | Dual-purpose electronic ballast for fluorescent lamp and gas discharge lamp | |
| CN101945521B (en) | Electroless lamp electronic ballast controlled by power line carrier | |
| CN201781667U (en) | Electrodeless lamp electronic ballast controlled by power line carrier | |
| CN2774072Y (en) | Circuit of electromagnetic induction light |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |