CN2125222U - Electronic ballast with duplex lamp tube - Google Patents
Electronic ballast with duplex lamp tube Download PDFInfo
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- CN2125222U CN2125222U CN 92214087 CN92214087U CN2125222U CN 2125222 U CN2125222 U CN 2125222U CN 92214087 CN92214087 CN 92214087 CN 92214087 U CN92214087 U CN 92214087U CN 2125222 U CN2125222 U CN 2125222U
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Abstract
The utility model relates to an electronic ballast with duplex lamp tube, which is composed of a rectifying filter circuit, a starting circuit, a push-pull circuit, a driving circuit, a high frequency filtering circuit and a symmetrical output circuit of power supply. The adoption of the symmetrical output circuit of power supply further eliminates the interference of the electronic ballast with duplex lamp tube towards the electric network, increases the oscillating efficiency, lowers the own power consumption of an oscillating tube and the magnetic material loss heating caused by harmonics and makes the efficiency and stability of the whole circuit further improved.
Description
The utility model relates to the electric ballast of a kind of pair of fluorescent tube, belongs to the duplicate of lighting device.
Electric ballast is a kind of energy-conservation fluorescent lamp ballast spare, and many newpapers and periodicals both domestic and external and patent documentation have had the record of this respect.Circuit diagram as the electronic ballast for fluorescent lamp of the Siemens Company that publishes on the second edition " electronics newspaper " on February 16th, 1986 is exactly a kind of circuit of disclosed comparative maturity early, later disclosed Chinese patent also has many this respect circuit, as 88203420.0 and No. 88211869.2 patents, be exactly a kind of improvement to original technology.But, all there are following some disadvantage in these circuit and item patents such as previously disclosed 87217123 and 88211325,87212090,88211621, thereby influenced this The Application of Technology: do not design high-frequency filter circuit in the circuit, the self-oscillation meeting feeds back in the line, disturbs other electronic equipments.Harmonic components is heavier, and power supply is had bigger influence.The conversion efficiency of entire circuit is not high, and the power consumption of oscillating tube is big, and the stability of circuit is not high.
I have proposed a kind of glitch-free electric ballast, it is Chinese patent 89213120.9, it has overcome the deficiency of existing circuit, but also exist simultaneously owing to be single tube circuit power supply, harmonic component is heavy, the work load of oscillating tube is heavy, has caused its serious heating, has influenced the situation in its life-span.The existing pair of tube circuit also is on the basis of existing circuit, and be in parallel simply, and as Chinese patent 87216946 and situation about coming to this for No. 88211325, they do not improve the efficient of circuit, make the burden of circuit oscillation pipe on the contrary, and are more fragile.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and the electric ballast of a kind of pair of fluorescent tube is provided, and further improves the conversion efficiency and the stability of electric ballast, reduces circuit harmonizing wave.
The purpose of this utility model can reach by following measure.
The reason of the drawback of existing circuit causes because of lamp tube power supply road imbalance.In order to change this situation, change unidirectional output into symmetric double to output, collector and emitter in the push-pull circuit that two generator triodes are formed is distributed to uniform load, reach the internal balance of circuit, the operating efficiency of the galvanic utilance of circuit and triode is the highest like this, thereby reaches the purpose of this utility model.Adopted damper tube in the circuit, can make the upper end of the trapezoidal waveform of circuit output become level and smooth.On circuit, realize this thought, Here it is will make a group of lamp tube power supply circuit, once utmost point L4 output by high frequency transformer, series inductance L5 is to a utmost point of the filament of fluorescent tube B again, the positive pole of damper tube D3 links together with inductance L 5 line with filament, the negative pole of damper tube D3 and be connected in filament another extremely go up; On the other end of fluorescent tube, capacitor C 6 is connected on the negative pole of the utmost point of filament and the DC power supply behind the commercial power rectification, and the positive pole of damper tube D4 links together with the line of capacitor C 6 with filament, the negative pole of damper tube D4 be connected in filament another extremely go up; Capacitor C 7 two ends also are connected on the negative pole of two damper tube D3, D4.Another group of lamp tube power supply circuit, inferior utmost point L3 output by high frequency transformer, series inductance L51 is to a utmost point of the filament of fluorescent tube A again, and the positive pole of damper tube D31 links together with the line of inductance L 51 with filament, the negative pole of damper tube D31 and be connected in filament another extremely go up; On the other end of fluorescent tube, capacitor C 61 is connected on the positive pole of the utmost point of filament and the DC power supply behind the commercial power rectification, and the positive pole of damper tube D41 links together with the line of capacitor C 61 with filament, the negative pole 31 of damper tube D41 be connected in parallel on filament another extremely go up; Capacitor C 71 two ends also are connected on the negative pole of two damper tube D31, D41.
In order to guarantee that circuit is symmetry output, the parameter of the electronic component in wherein said two groups of power supply circuits should be symmetry equivalent as far as possible, be that fluorescent tube A equates with the power of fluorescent tube B, inductance L 3=inductance L 4, inductance L 5=inductance L 51, capacitor C 6=capacitor C 61, capacitor C 7=capacitor C 71, damper tube D3, D4, D31, D41 electrical quantity also should symmetry equate.
Figure of description 1 is circuit theory diagrams of the present utility model.
Be described in detail referring to 1 pair of the utility model of accompanying drawing.
This circuit constitutes bridge rectifier filter circuit by D01-04, C1, and the MY among the figure is a piezo-resistance, can prevent that the high voltage of power supply from impacting protective circuit safety; R4, R3, L1, L2 constitute circuits for triggering; R1, C2, D1, D2 constitute start-up circuit; L01, L02, C01, C02 constitute high-frequency filter circuit; T1, T2 recommend pipe for vibration.
The basic functional principle of circuit is existing detailed elaboration in 87212090,89213120.9, no longer repeats here.Face is not set forth with regard to feature circuit of the present utility model:
Lamp tube power supply circuit of the present utility model is symmetrical output circuit, promptly is:
1. one of the lamp tube power supply circuit group, inferior utmost point L4 output by high frequency transformer, series inductance L5 is to a utmost point of the filament of fluorescent tube B again, and the positive pole of damper tube D3 links together with the line of inductance L 5 with filament, the negative pole of damper tube D3 and be connected in filament another extremely go up; On the other end of fluorescent tube, capacitor C 6 is connected on the negative pole of the utmost point of filament and the DC power supply behind the commercial power rectification, the positive pole of damper tube D4 links together with capacitor C 6 line with filament, the negative pole 3 of damper tube D4 be connected in filament another extremely go up: capacitor C 7 two ends also are connected on the negative pole of two damper tube D3, D4;
2. another group of lamp tube power supply circuit, inferior utmost point L3 output by high frequency transformer, series inductance L51 is to a utmost point of the filament of fluorescent tube A again, and the positive pole of damper tube D31 links together with the line of inductance L 51 with filament, the negative and utmost point of damper tube D31 be connected in filament another extremely go up; On the other end of fluorescent tube, capacitor C 61 is connected on the positive pole of the utmost point of filament and the DC power supply behind the commercial power rectification, and the positive pole of damper tube D41 links together with the line of capacitor C 61 with filament, the negative pole of damper tube D41 be connected in filament another extremely go up; Capacitor C 71 two ends also are connected on the negative pole of two damper tube D31, D41.
3. the parameter of the electronic component in two groups of above-mentioned power supply circuits should be symmetry equivalent as far as possible, be that fluorescent tube A equates inductance L 5=inductance L 51, capacitor C 6=capacitor C 61 with the power of fluorescent tube B, capacitor C 7=capacitor C 71, damper tube D3, D4, D31, D41 electrical quantity also should symmetry equate.
4. according to identical symmetry principle, the utility model also can derive the circuit of electronic ballast of four fluorescent tubes on the basis of this circuit.
The utility model has following advantage compared with the prior art.
1. owing to adopt symmetrical output circuit, the harmonic components of circuit is less, to not impact of power supply. The conversion efficiency height of whole circuit, the power consumption of oscillating tube power consumption under the output Same Efficieney reduces, and the stability of circuit improves.
2. the efficient of circuit further improves, and can economize on electricity more than 40%.
3. even a certain fluorescent tube damages, another fluorescent tube also can work, and the operating position with prior art is the same in this case.
Claims (2)
1, the electric ballast of a kind of pair of fluorescent tube, it is made up of current rectifying and wave filtering circuit, start-up circuit, push-pull circuit, drive circuit, high-frequency filter circuit and lamp tube power supply circuit.The lamp tube power supply circuit that it is characterized in that it is symmetrical output circuit, promptly is:
A. one of the lamp tube power supply circuit group, secondary L4 output by high frequency transformer, series inductance L5 is to a utmost point of the filament of fluorescent tube B again, and the positive pole of damper tube D3 links together with the line of inductance L 5 with filament, the negative pole of damper tube D3 and be connected in filament another extremely go up; On the other end of fluorescent tube, capacitor C 6 is connected on the negative pole of the utmost point of filament and the DC power supply behind the commercial power rectification, and the positive pole of damper tube D4 links together with the line of capacitor C 6 with filament, the negative pole of damper tube D4 be connected in filament another extremely go up; Capacitor C 7 two ends also are connected on the negative pole of two damper tube D3, D4;
B. another group of lamp tube power supply circuit, secondary L3 output by high frequency transformer, series inductance L51 is to a utmost point of the filament of fluorescent tube A again, and the positive pole of damper tube D31 links together with the line of inductance L 51 with filament, the negative pole of damper tube D31 and be connected in filament another extremely go up; On the other end of fluorescent tube, capacitor C 61 is connected on the positive pole of the utmost point of filament and the DC power supply behind the commercial power rectification, and the positive pole of damper tube D41 links together with the line of capacitor C 61 with filament, the negative pole of damper tube D41 be connected filament another extremely go up; Capacitor C 71 two ends also are connected on the negative pole of two damper tube D31, D41.
2, the electric ballast of a kind of pair of fluorescent tube as claimed in claim 1, the parameter that it is characterized in that the electronic component in wherein said two groups of power supply circuits should be symmetry equivalent as far as possible, be that fluorescent tube A equates with the power of fluorescent tube B, inductance L 5=inductance L 51, capacitor C 6=capacitor C 61, capacitor C 7=capacitor C 71, damper tube D3, D4, D31, D41 electrical quantity also should symmetry equate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92214087 CN2125222U (en) | 1992-01-20 | 1992-01-20 | Electronic ballast with duplex lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92214087 CN2125222U (en) | 1992-01-20 | 1992-01-20 | Electronic ballast with duplex lamp tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2125222U true CN2125222U (en) | 1992-12-16 |
Family
ID=4958697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92214087 Granted CN2125222U (en) | 1992-01-20 | 1992-01-20 | Electronic ballast with duplex lamp tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2125222U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835182B (en) * | 2005-03-14 | 2010-08-25 | 上海远光照明电器有限公司 | Double-power gas discharge lamp and its energy saving controller |
-
1992
- 1992-01-20 CN CN 92214087 patent/CN2125222U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835182B (en) * | 2005-03-14 | 2010-08-25 | 上海远光照明电器有限公司 | Double-power gas discharge lamp and its energy saving controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |