CN2669544Y - Electronic ballast - Google Patents
Electronic ballast Download PDFInfo
- Publication number
- CN2669544Y CN2669544Y CNU2003201183897U CN200320118389U CN2669544Y CN 2669544 Y CN2669544 Y CN 2669544Y CN U2003201183897 U CNU2003201183897 U CN U2003201183897U CN 200320118389 U CN200320118389 U CN 200320118389U CN 2669544 Y CN2669544 Y CN 2669544Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- fluorescent lamp
- resistance
- filament
- 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 fluorescent lamp of electronic illumination technology. After being inputted, a power supply is divided into two paths, one path supplies direct current to a filament at one end of a fluorescent lamp through a voltage reducing circuit, a rectification circuit and a voltage limiting circuit, and the other path outputs high voltage to the other end of the fluorescent lamp through a voltage doubling circuit and a voltage stabilizing circuit to form the utility model. The electronic ballast for a fluorescent lamp is lightened by direct current without flicker and electric inductance, electromagnetic interference can not be generated, and the utility model has high luminous flux. A single end has no filament. After a filament of one end is burned out, the utility model can be used continuously by changing both ends, and the service life of the utility model is prolonged.
Description
Technical field
The utility model relates to a kind of electronic ballast for fluoresent lamp of electrical lighting technology.
Background technology
Fluorescent lamp is a kind of energy-conservation, efficient, green light source that colour temperature can be controlled, and its being extensive use of in every field has become the optimal selection of artificial light source in people's daily life.People not only note its efficiency (for example developing to miniaturization, direction integrated, digitized efficient energy-saving) in the light source that is extensive use of this efficient, high-quality, also give more attention to life-span of fluorescent lamp simultaneously.
In the prior art, for life-span of improving fluorescent tube except that the quality that improves fluorescent tube itself, generally be adopt the filament of giving fluorescent tube between warming up period with two steps of reduction lamp tube ends voltage between preheating and fluorescent tube warming up period fully.Step poly-1: can make filament fully preheating before instant igniting of fluorescent tube, help the emission of filament electronic and the ionization puncture of fluorescent tube like this, to reach the purpose of starter.Yet fact proved: excessive heater current comes the preheating meeting to make filament aging in advance, thereby shortens the life-span of fluorescent tube.Step 2: since the ordinary electronic ballast between the fluorescent tube warming up period, be applied to lamp tube ends pulse voltage at 300 volts even higher, this just is very easy to cause so-called " aura ".If can reduce the voltage of lamp tube ends during this, and make it to guarantee to start in the moment that fluorescent tube starts, just can thoroughly stop the generation of glow discharge, also promptly avoided the sputter under high pressure of filament electrons emitted, fluorescent tube can not turned black too early, thus i.e. life-span of prolonging lamp tube greatly.
For improving the useful life of fluorescent tube, people have studied preheating, the startup of fluorescent lamp lighting, three courses of work of operate as normal, the preheating and the fluorescent tube of filament is applied to two ends before startup high pressure has given the attention of height, has also therefore produced the aging that the whole bag of tricks and circuit based on above-mentioned theory delay fluorescent tube.
Can adopt thermistor PTC in the prior art with positive temperature characterisitic.In the moment of energized, the thermistor that is connected across lamp tube ends is obtained maximum filament pre-heating electric current, As time goes on, because thermistor is obtained maximum lighter silk preheat curent, As time goes on, owing to raising, the temperature of thermistor PTC make resistance value become big, heater current reduces gradually, and the effect of resonant capacitance is obvious gradually in the circuit at this moment, also is that the Q value of resonant circuit becomes big gradually, when the voltage at lamp and two ends edged up to starting resistor, fluorescent tube was lighted immediately.This is a kind of simple and efficient ways often is that general low price electric ballast is used.
In addition, in the electric ballast of superior performance, generally all adopt the IC integrated circuit as Drive and Control Circuit.This integrated package has also that other is all multi-functional, and as closely making warm-up time, the setting of frequency of oscillation, protection detect and function such as restart.This kind method also reaches the purpose that reduces fluorescent tube two terminal voltages between warming up period.
In sum, no matter high-performance still is the electric ballast of low price all must be existed to exchange and light fluorescent lamp, interchange causes light that the phenomenon appearance of stroboscopic is arranged.In addition, general electric ballast all is provided with inductance, and inductance produces electromagnetic interference in the course of the work precise electronic product is exerted an influence.
Summary of the invention
The utility model purpose is to overcome above-mentioned shortcoming and provides a kind of flicker free noninductive electric ballast.
The purpose of this utility model is achieved in that and is branched off into two-way after the power supply input: the one tunnel gives the filament of fluorescent lamp one end through reduction voltage circuit, rectification circuit, pressure limiting circuit direct current supply; Another road is through voltage-multiplying circuit, the output high pressure is given the other end of fluorescent lamp behind the voltage stabilizing circuit, be provided with pressure limiting circuit between rectification circuit and the fluorescent lamp, pressure limiting circuit is parallel with the resistance (R7 of two series connection by bidirectional triode thyristor (TRIAC), R8), resistance (R8) electric capacity (C9) in parallel, the G utmost point of bidirectional triode thyristor (TRIAC) connects bidirectional diode (D15) voltage stabilizing circuit and also is parallel with the circuit that the jumping bubble is connected with diode, through bridge rectifier, the direct current of exporting after the pressure limiting is positive and negative two utmost points output, the voltage of output is between 24 volts to 85 volts, through multiplication of voltage, what export after the voltage stabilizing is monopolar high-voltage, output voltage is between 450 volts to 1500 volts, be in series with resistance R 9 between pressure limiting circuit and the fluorescent lamp, the resistance-capacitance depressurization circuit that reduction voltage circuit is formed in parallel by resistance R 1 and C1; Rectification circuit constitutes bridge rectifier by diode (D1, D2, D3, D4); Be provided with current-limiting resistance (R3) between voltage-multiplying circuit and the voltage stabilizing circuit; Voltage stabilizing circuit is in series by triode (T1, T2), and positive and negative two utmost points of the direct current filament two ends of fluorescent lamp one end respectively connect into the loop, and high pressure is connected in any pin of filament of the other end of fluorescent lamp.
Advantage of the present utility model: 1. direct current is lighted flicker free does not have not output electromagnetic interference of inductance, the well-illuminated height of light.2. single-ended no filament, but the two ends transposing just can continue to use behind the end filament blow, and make the life-span arteries and veins long.
Description of drawings
Fig. 1 is an electronic circuitry of the present utility model.
Fig. 2 is the schematic diagram of fluorescent lamp.
Embodiment
1. reduction voltage circuit 2. voltage-multiplying circuits 3. rectification circuits 4. voltage stabilizing circuits 5. pressure limiting circuits 6. fluorescent lamps
Further specify the utility model below in conjunction with accompanying drawing by embodiment.
As shown in the figure, be branched off into two-way after the power supply input: the one tunnel gives the filament of fluorescent lamp 6 one ends through reduction voltage circuit 1, rectification circuit 3, pressure limiting circuit 5 direct current supplys; Another road is through voltage-multiplying circuit 2, voltage stabilizing circuit 4 back output high pressure are given the other end of fluorescent lamp 6, be provided with pressure limiting circuit 5 between rectification circuit 3 and the fluorescent lamp 6, pressure limiting circuit 5 is parallel with the resistance (R7 of two series connection by bidirectional triode thyristor (TRIAC), R8), resistance (R8) electric capacity (C9) in parallel, the G utmost point of bidirectional triode thyristor (TRIAC) connects bidirectional diode (D15) voltage stabilizing circuit 5 and also is parallel with the circuit that jumping bubble LD1 connects with diode D12, through rectification, the direct current of exporting after the pressure limiting is positive and negative two utmost points output, the voltage of output is between 24 volts to 85 volts, through multiplication of voltage, what export after the voltage stabilizing is monopolar high-voltage, output voltage is between 450 volts to 1500 volts, be in series with resistance R 9 between pressure limiting circuit 5 and the fluorescent lamp 6, the resistance-capacitance depressurization circuit that reduction voltage circuit 1 is formed in parallel by resistance R 1 and C1; Rectification circuit 3 constitutes bridge rectifier by diode (D1, D2, D3, D4); Be provided with current-limiting resistance (R3) between voltage-multiplying circuit 5 and the voltage stabilizing circuit 4; Voltage stabilizing circuit is in series by triode (T1, T2), and positive and negative two utmost points of the direct current filament two ends of fluorescent lamp 6 one ends respectively connect into the loop, and high pressure is connected in any pin of filament of the other end of fluorescent lamp 6.
Operation principle: the power supply input is divided into two-way behind fuse FU1, one tunnel resistance-capacitance depressurization circuit 1 step-down through resistance R 1 and capacitor C 1 composition, form bridge rectifier 3 through diode D1, D2, D3, D4, input is main pressure limiting circuit 5 by bidirectional triode thyristor TRIAC after the rectification, to the filament of an end of fluorescent lamp 6, the other end on the filament links to each other with the output negative terminal of bridge rectifier and constitutes the loop voltage of output through resistance R 9; Another road is formed voltage-multiplying circuit 2 via diode D5, D6, D7, D8, D9 and capacitor C 2, C3, C4, C5, C6 voltage is raise,, export on the filament of the other end that high pressure is directly connected to fluorescent lamp 6 to being the main voltage stabilizing circuit of forming 4 by triode T1, T2 through resistance R 3.
Claims (7)
1. electric ballast is characterized in that: be branched off into two-way after the power supply input: the one tunnel gives the filament of fluorescent lamp one end through reduction voltage circuit, rectification circuit, pressure limiting circuit direct current supply; The other end that high pressure is given fluorescent lamp is exported on another road behind voltage-multiplying circuit, voltage stabilizing circuit.
2. electric ballast according to claim 1, it is characterized in that: be provided with pressure limiting circuit between bridge rectifier and the fluorescent lamp, pressure limiting circuit is parallel with the resistance (R7, R8) of two series connection by bidirectional triode thyristor (TRIAC), resistance (R8) electric capacity (C9) in parallel, the G utmost point of bidirectional triode thyristor (TRIAC) connect bidirectional diode (D15) voltage stabilizing circuit and also are parallel with the circuit that the jumping bubble is connected with diode.
3. electric ballast according to claim 1 is characterized in that: the direct current of exporting after rectification, pressure limiting is positive and negative two utmost points output, and the voltage of output is between 24 volts to 85 volts.
4. electric ballast according to claim 1 is characterized in that: what export after multiplication of voltage, voltage stabilizing is monopolar high-voltage, and output voltage is between 450 volts to 1500 volts.
5. electric ballast according to claim 1 is characterized in that: be in series with resistance R 9 between pressure limiting circuit and the fluorescent lamp.
6. electric ballast according to claim 1 is characterized in that: the resistance-capacitance depressurization circuit that reduction voltage circuit is formed in parallel by resistance R 1 and C1; Rectification circuit constitutes bridge rectifier by diode (D1, D2, D3, D4); Be provided with current-limiting resistance (R3) between voltage-multiplying circuit and the voltage stabilizing circuit; Voltage stabilizing circuit is in series by triode (T1, T2).
7. electric ballast according to claim 1 is characterized in that: positive and negative two utmost points of the above-mentioned direct current filament two ends of fluorescent lamp one end respectively connect into the loop, and high pressure is connected in any pin of filament of the other end of fluorescent lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201183897U CN2669544Y (en) | 2003-11-24 | 2003-11-24 | Electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201183897U CN2669544Y (en) | 2003-11-24 | 2003-11-24 | Electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2669544Y true CN2669544Y (en) | 2005-01-05 |
Family
ID=34438986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201183897U Expired - Fee Related CN2669544Y (en) | 2003-11-24 | 2003-11-24 | Electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2669544Y (en) |
-
2003
- 2003-11-24 CN CNU2003201183897U patent/CN2669544Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6348769B1 (en) | Electronic ballast | |
| CN100466878C (en) | Igniter device for discharge lamp | |
| CN101170864A (en) | Ballast with pre-heating controlled IC | |
| CN2669544Y (en) | Electronic ballast | |
| CN1031842C (en) | Energy-saving health fluorescent lamp | |
| CN101112129B (en) | Method of controlling cathode voltage with low lamp's arc current | |
| CN201742635U (en) | Electronic ballast with frequency conversion pre-heating function used for fluorescent lamps | |
| Hong et al. | Study and implementation of hybrid dimming inverter for T5 fluorescent lamp | |
| US20110241556A1 (en) | Method of controlling a fluorescent lamp, a controller and a fluorescent lamp | |
| AU638068B2 (en) | Preheater circuit for fluorescent lamps | |
| CN103313493A (en) | Electronic ballast with adjustable luminance | |
| CN2152371Y (en) | Electronic lamp tube starter | |
| CN2143043Y (en) | Multi-function illuminator for fluorescent lamp | |
| CN101145471B (en) | Relay for radio circuit and electronic ballast employing the relay | |
| CN2202388Y (en) | Electronic ballast capable of preventing light tube from changing black | |
| CN2652085Y (en) | Light-adjustable electronic ballast | |
| CN105101594B (en) | Double-control dimming electronic ballast | |
| CN88200368U (en) | Tube standard of fluorescent lamp with energy-saving, life-prolonging and quick glow starter | |
| JP2000231997A (en) | Fluorescent lamp lighting device | |
| CN2720761Y (en) | Electronic fluorescent lamp | |
| CN2240225Y (en) | Electronic ballast | |
| CN101917814A (en) | Electronic ballast of fluorescent lamp with frequency converting and preheating functions | |
| CN2317548Y (en) | Neon bulb starter for electronic energy-saving lamp | |
| KR20020060342A (en) | Igniter circuit of the high intensity discharge lamp | |
| CN103313492A (en) | Electronic ballast with adjustable luminance |
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 |