CN2164173Y - AC electronic ballast without radio-frequency interference - Google Patents
AC electronic ballast without radio-frequency interference Download PDFInfo
- Publication number
- CN2164173Y CN2164173Y CN93237214U CN93237214U CN2164173Y CN 2164173 Y CN2164173 Y CN 2164173Y CN 93237214 U CN93237214 U CN 93237214U CN 93237214 U CN93237214 U CN 93237214U CN 2164173 Y CN2164173 Y CN 2164173Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- radio frequency
- frequency interference
- ballast
- constant current
- 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
-
- Y02B60/50—
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Rectifiers (AREA)
Abstract
The utility model discloses an AC electronic ballast without radio frequency interference, which comprises a commutation filtering circuit. The utility model is characterized in that a constant current source circuit is connected behind the commutation filtering circuit, the output the DC constant current source circuit is controlled by a low frequency electronic switching circuit, and a fluorescent lighting fixture is driven by the low frequency electronic switching circuit. The utility model has the advantages that the work of the fluorescent lamp can be controlled in a frequency range below an electric network frequency, radio frequency interference can be removed, the luminous efficiency and the power supply efficiency can be enhanced, and the utility model has an obvious energy saving effect.
Description
The utility model relates to other classes power technology not to be covered in the electricity, is the circuit arrangement or the equipment of igniting of a kind of discharge lamp or control, specifically a kind of wherein circuit arrangement by low frequency ac.
For the alternating electron ballast, except requiring higher power-efficient and High Power Factor, reducing or removing radio frequency interference also is an important indicator, general electric ballast is in order to raise the efficiency and to reduce volume, all adopts the high-frequency inversion technology to obtain hundreds of hertz to the high frequency voltage of several KHz and removes to drive fluorescence tool (fluorescent lamp, neon light, mercury lamp, sodium vapor lamp and all need with the device of ballast).With the fluorescent lamp is example, fluorescent lamp work the time can become the width of cloth penetrate the source towards periphery the width of cloth penetrate high-frequency electric wave, to around instrument and meter and some other electric equipment cause radio frequency interference.Even when producing less traditional transformer of radio frequency interference or Inductive ballast and being operated in mains frequency 50-60 hertz, broadcast receiver etc. is produced because of it disturb the hum that forms.
The purpose of this utility model provides a kind of luminous efficiency height, energy-conservation tangible no radio frequency interference alternating electron ballast.
Technical solution of the present utility model is: a kind of no radio frequency interference alternating electron ballast, comprise current rectifying and wave filtering circuit, the difference of itself and prior art is: be connected to the dc constant current power supply circuit behind the current rectifying and wave filtering circuit, circuit output of a low-frequency electronic switch circuit control dc constant current power supply and driving fluorescent lamp tool.
Dc constant current power supply electric routing switch type voltage stabilizing circuit and subsequent semiconductor constant-current circuit in the utility model are formed.Certainly, the dc constant current power supply circuit also can adopt other suitable circuit structure forms.
Dc constant current power supply circuit in the utility model also can by high-frequency inverter circuit, thereafter electric capacity or the inductance ballast element, and the ballast element after rectification circuit formed.
Electric capacity in the utility model or inductance ballast element are parallel with internal power factor compensating element.Certainly, also can adopt other suitable forms.
Low-frequency electronic switch circuit in the utility model adopts the semiconductor device of bridge connection.Certainly, also can adopt other suitable circuit structure forms.
Semiconductor device in the utility model adopts transistor, controllable silicon or VMOS circuit.Certainly, also can adopt other suitable semiconductor device.
The utility model has the advantages that: make fluorescent lamp operation be lower than the frequency range of mains frequency,, can accomplish can not survey the radio frequency interference electric wave because fundamental frequency is very hanged down though the high order harmonic component of square wave is abundant.The luminous efficiency of fluorescent lamp is improved.Because power factor improves, power-efficient is also high, and the luminous efficiency of fluorescent lamp also has raising in addition, so energy-saving effect is fairly obvious.
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is a kind of theory diagram that does not have radio frequency interference alternating electron ballast of the present utility model.
Fig. 2 is the theory diagram of the no radio frequency interference alternating electron of another kind of the present utility model ballast.
Fig. 3 is the electrical schematic diagram of no radio frequency interference alternating electron ballast shown in Figure 1.
Fig. 1, Fig. 3 have described an embodiment of the present utility model.It is made up of circuit such as rectifying and wave-filtering, high-frequency inversion, the higher-order of oscillation, inductance ballast, electric capacity power factor compensation, rectification, low frequency switch, low-frequency oscillations.Current rectifying and wave filtering circuit and electrical network join, and low frequency switch and fluorescent lamp join.
Its operation principle is: capacitor C 7 under higher-order of oscillation natural frequency with inductance L 2 parallel resonances, be example with the 40W fluorescent lamp, when operating at full capacity, the effective value of flow through VMOS device T1, T2 electric current is P/U.After a point is low-frequency electronic switch, thereby diode D11, D12, D13, D14 bridge full-wave rectifier obtain dc constant current power supply, controllable silicon D18, D19 and VMOS device T3, T4 constitute bridge drive circuit again, certainly, controllable silicon D18, D19 also can adopt the VMOS device the same with VMOS device T3, T4.When 5HZ square wave drive controllable silicon D18, D19 and VMOS device T3, T4, alternating current is crossed the 5HZ electric current in the fluorescent tube, the size of this electric current is by dividing potential drop on external voltage and the inductance L and load decision itself, and the operating current of common 40w fluorescent lamp is usually at 400mA ± 10mA.
Also comprise in the circuit: choke L1, capacitor C 1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, diode D1, D2, D3, D4, D5, D6, D15, D16, D17, D20, resistance R 1, R2, R3, filter 20KC, 5KZ, integrated circuit 4869 etc.
The utility model also can adopt other forms of implementation, as shown in Figure 2, comprises circuit such as rectifying and wave-filtering, HF switch voltage stabilizing, semiconductor constant current electronic switch, and the specific constructive form of each circuit can not be described in detail at this with reference to relevant prior art data.
Claims (6)
1, a kind of no radio frequency interference alternating electron ballast comprises current rectifying and wave filtering circuit, it is characterized in that: be connected to the dc constant current power supply circuit behind the current rectifying and wave filtering circuit, circuit output of a low-frequency electronic switch circuit control dc constant current power supply and driving fluorescent lamp tool.
2, no radio frequency interference alternating electron ballast according to claim 1, it is characterized in that: dc constant current power supply electric routing switch type voltage stabilizing circuit and subsequent semiconductor constant-current circuit are formed.
3, no radio frequency interference alternating electron ballast according to claim 1 is characterized in that: the dc constant current power supply circuit by high-frequency inverter circuit, thereafter electric capacity or the inductance ballast element, and the ballast element after rectification circuit formed.
4, no radio frequency interference alternating electron ballast according to claim 3, it is characterized in that: electric capacity or inductance ballast element are parallel with internal power factor compensating element.
5, according to claim 1 or 2,3,4 described no radio frequency interference alternating electron ballasts, it is characterized in that: the low-frequency electronic switch circuit adopts the semiconductor device of bridge connection.
6, no radio frequency interference alternating electron ballast according to claim 5 is characterized in that: semiconductor device adopts transistor, controllable silicon or VMOS circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93237214U CN2164173Y (en) | 1993-07-03 | 1993-07-03 | AC electronic ballast without radio-frequency interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93237214U CN2164173Y (en) | 1993-07-03 | 1993-07-03 | AC electronic ballast without radio-frequency interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2164173Y true CN2164173Y (en) | 1994-05-04 |
Family
ID=33812205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93237214U Expired - Fee Related CN2164173Y (en) | 1993-07-03 | 1993-07-03 | AC electronic ballast without radio-frequency interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2164173Y (en) |
-
1993
- 1993-07-03 CN CN93237214U patent/CN2164173Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201888006U (en) | Intelligent dimming high frequency electronic discharge lamp for road lighting | |
| CN2164173Y (en) | AC electronic ballast without radio-frequency interference | |
| CN101309543A (en) | Three-phase centralized controlled electric ballast | |
| CN205408260U (en) | Short -circuit protection circuit based on low frequency square wave electronic ballast | |
| CN203151849U (en) | Energy-saving electronic ballast and light fixture | |
| CN102685997B (en) | High-frequency HID (High Intensity Discharge) electronic ballast with modulated power frequency | |
| CN1812679A (en) | Efficient energy-saving fluorescent lamp electronic ballast | |
| CN202455634U (en) | Electronic ballast of electrodeless lamp | |
| CN2414584Y (en) | One electronic ballast capable of driving many fluorescent lamps | |
| CN1386040A (en) | Low-harmonic compact type energy-saving lamp electronic ballast | |
| CN2438295Y (en) | Low cost electronic ballast for high-power and high-intensity gas discharge lamp | |
| CN2200276Y (en) | Electronic power supply for neon lamp | |
| CN201830532U (en) | Intelligent light-adjusting high-frequency electrodeless lamp | |
| CN2543321Y (en) | Low-cost electronic ballast for high-intensity gas discharge lamp | |
| CN211378325U (en) | LED driving power supply based on CWA ballast | |
| CN201450656U (en) | Circuit of cold cathode fluorescent energy-saving lamp | |
| CN2774072Y (en) | Circuit of electromagnetic induction light | |
| CN104754844A (en) | Electronic ballast for fluorescent lamp | |
| CN2334138Y (en) | Electronic ballast | |
| CN2131247Y (en) | Power inverter with duplex rectification circuit | |
| CN2166576Y (en) | Efficient power-saving electronic ballast | |
| CN2678308Y (en) | Electronic ballast | |
| CN2222991Y (en) | Electronic ballast with special power supply filter circuit | |
| CN203313504U (en) | High-power-factor electronic ballast of energy-saving lamp | |
| CN204810616U (en) | Power structure of LED fluorescent lamp and LED fluorescent lamp that has this structure |
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 |