CN2279045Y - Electronic ballast for fluorescent lamp - Google Patents
Electronic ballast for fluorescent lamp Download PDFInfo
- Publication number
- CN2279045Y CN2279045Y CN 96227522 CN96227522U CN2279045Y CN 2279045 Y CN2279045 Y CN 2279045Y CN 96227522 CN96227522 CN 96227522 CN 96227522 U CN96227522 U CN 96227522U CN 2279045 Y CN2279045 Y CN 2279045Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- fluorescent lamps
- electronic
- ballast
- electronic ballast
- 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
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The utility model relates to an electronic ballast for fluorescent lamps, which is composed of an interference removing circuit, a rectifying and filtering circuit, a high-frequency oscillating circuit and a load resonant circuit, wherein, the load resonant circuit is provided with two starting capacitors C1, C2 which are respectively connected in series with one filament of a fluorescent lamp tube FL and together connected in parallel with the lamp tube; a ballast inductance L is connected in series with C1, C2. The utility model has simple structure and reasonable structure, and is capable of lowering current flowing across the filaments and reducing the loss of the filaments. The electronic ballast enhances the work efficiency of the electronic fluorescent lamps, prolongs the service life of the electronic fluorescent lamps, and is suitable for being used by various electronic fluorescent lamps.
Description
The utility model relates to a kind of electric lighting technology, specifically a kind of electronic ballast for fluorescent lamps.
As everyone knows, existing electronic ballast for fluorescent lamps is mostly by going interfered circuit, current rectifying and wave filtering circuit, high-frequency oscillating circuits, load resonant circuit to form.Load resonant circuit generally is composed in series by ballast inductance L, startup capacitor C and fluorescent tube FL, is used for series resonance, starts lamp works.Generally speaking, many electric ballasts require bigger to starting the capacitor C value, the C value is big more, electric current by startup capacitor C and tube filament is also big more, the loss that the two ends filament produces is also big more, the efficient of whole fluorescent lamp is just low more, and in case a certain filament damages, whole electricity-saving lamp just quits work and cause waste.
The purpose of this utility model is exactly in order to overcome the deficiency of above-mentioned existing electric ballast, provide a kind of rational in infrastructure, easy to connect, can reduce the heater current of flowing through, improve the operating efficiency of electronic fluorescent lamp, the electronic ballast for fluorescent lamps that prolongs its useful life.
For achieving the above object, a kind of electronic ballast for fluorescent lamps, it is by going interfered circuit, current rectifying and wave filtering circuit, high-frequency oscillating circuits, load resonant circuit to form, it is characterized in that load resonant circuit is provided with two and starts capacitor C 1, C2, C1, C2 connect with the filament of fluorescent tube FL respectively, and in parallel with fluorescent tube together, ballast inductance L and they are connected in series.
The utility model is owing to form startup electric capacity jointly by C1, C2, under the situation that same oscillating circuit drives, C1, C2 value can only be half of former startup electric capacity, reduced the electric current on the filament of flowing through like this, reduced loss, improved the operating efficiency of electronic fluorescent lamp, prolonged its useful life, usually the value of C1, C2 can be at 1000PF between the 10000PF.
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is a structural representation of the present utility model.
As can be seen from Figure 1, a kind of electronic ballast for fluorescent lamps, it is by removing interfered circuit 1, current rectifying and wave filtering circuit 2, high-frequency oscillating circuits 3 and load resonant circuit 4 are formed, the effect of removing interfered circuit 1 is to suppress interfering with each other between electrical network and the electric ballast, especially prevent that the high-frequency current that electric ballast produces from entering electrical network, the effect of current rectifying and wave filtering circuit 2 is to convert industrial-frequency alternating current to direct current, use for high-frequency oscillating circuits, the effect of high-frequency oscillating circuits 3 then is the high-frequency alternating current that direct current is converted to 30-50KHZ with load resonant circuit 4, promote the work of load series resonant circuit, foregoing circuit is formed and effect belongs to prior art, and this does not describe in detail.
The utility model load resonant circuit is provided with ballast inductance L and starts capacitor C 1, C2 and fluorescent tube FL, capacitor C 1, C2 connect with the filament of fluorescent tube FL respectively, then in parallel with fluorescent tube PL together, the ballast inductance is connected on Gu Luzhong, form the LC series resonant circuit, the utility model can also be between e, f a thermistor in parallel.
The utility model is formed startup electric capacity by C1, C2, their parallel connections can be satisfied some electric ballasts to starting the numerical value requirement of electric capacity, the choosing value of general C1, C2 can be between 1000PF～10000PF, under similar circumstances, reduced the electric current of the filament of flowing through, reduced loss, improved the operating efficiency of electronic fluorescent lamp, and under filament situation about damaging, the startup electric capacity by another filament still can guarantee the operate as normal of fluorescent tube, thereby has prolonged the useful life of electricity-saving lamp.
The utility model is simple in structure, rationally, can reduce the filament loss, has improved the operating efficiency of electronic fluorescent lamp, prolongs its useful life, is suitable for all kinds of electronic fluorescent lamps and uses.
Claims (2)
1, a kind of electronic ballast for fluorescent lamps, it is by going interfered circuit, current rectifying and wave filtering circuit, high-frequency oscillating circuits, load resonant circuit to form, it is characterized in that load resonant circuit is provided with two and starts capacitor C 1, C2, C1, C2 connect with the filament of fluorescent tube FL respectively, and in parallel with fluorescent tube together, ballast inductance L and they are connected in series.
2, electronic ballast for fluorescent lamps as claimed in claim 1, the value that it is characterized in that said startup capacitor C 1, C2 is between 1000PF～10000PF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96227522 CN2279045Y (en) | 1996-03-14 | 1996-03-14 | Electronic ballast for fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96227522 CN2279045Y (en) | 1996-03-14 | 1996-03-14 | Electronic ballast for fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2279045Y true CN2279045Y (en) | 1998-04-15 |
Family
ID=33905612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96227522 Expired - Fee Related CN2279045Y (en) | 1996-03-14 | 1996-03-14 | Electronic ballast for fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2279045Y (en) |
-
1996
- 1996-03-14 CN CN 96227522 patent/CN2279045Y/en not_active Expired - Fee Related
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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 |