CN2624582Y - Electronic ballast with passive power factor correction - Google Patents
Electronic ballast with passive power factor correction Download PDFInfo
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- CN2624582Y CN2624582Y CN 03247568 CN03247568U CN2624582Y CN 2624582 Y CN2624582 Y CN 2624582Y CN 03247568 CN03247568 CN 03247568 CN 03247568 U CN03247568 U CN 03247568U CN 2624582 Y CN2624582 Y CN 2624582Y
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- diode
- capacitor
- power factor
- negative pole
- positive pole
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Abstract
An electronic ballast with passive power factor correction, which comprises a bridge rectifier, a high frequency generator and a passive power factor correction circuit which consists of the diode D1 swung dash diode D4, the capacity C2, the capacity C3, the inductance L and the electrolytic condenser C4. The positive electrode of the bridge rectifier is connected with the inductance L, the other end of L is connected with the positive electrode of D1 and the negative pole of D2; the negative pole of D1 is connected with the positive pole of C2; the positive pole of C4 is connected with that of the high frequency generator; the positive pole of D2 is connected with the negative pole of D3; the other end of C2 and C3 are electrically connected with the daylight lamp; the positive pole of D3 is connected with the negative pole of D4; the other end of C3 is connected with the negative pole of the bridge rectifier; the positive pole of D4 is connected with the negative pole of C4 and the negative terminal of the high frequency generator. The utility model can guarantee the steady operation of the electronic ballast under constant input current, so as to improve the input power factor and lower the contents of the input current harmonics. Also, the wave crest ratio of the lamp electronic ballast is improved. Therefore, the utility model is the ideal daylight lamp electronic ballast with higher tube pressure.
Description
Technical field
The utility model relates to a kind of electric ballast.
Background technology
The existing electric ballast that has PPFC (Passive Power Factor Correction), the passive power factor correcting circuit that adopts mainly contains two classes: a class is two-way confession accessory power supply formula circuit, usually claim " double pump formula " circuit, another kind of is high-frequency energy reaction type circuit, claims " high pump formula " circuit again.The former, power factor only can reach about 0.92, and Harmonics of Input content can only reach " H " level level of GB/T15144-94 standard code, does not meet the electromagnetic compatibility Harmonics of Input content requirement of IEC61000-3-2 regulation; The latter is higher owing to the circuit VD, and fluctuation easily causes electric ballast overall work reliability variation with the input supply voltage fluctuation.And the electric ballast of this two classes PPFC (Passive Power Factor Correction) is when being used in the fluorescent tube that upper pipe presses, and its lamp current crest coefficient is difficult to reach the requirement of domestic and international standard.
Summary of the invention
The purpose of this utility model is at the above problem, the electric ballast with PPFC (Passive Power Factor Correction) that provide a kind of High Power Factor, low Harmonics of Input, can improve lamp current crest ratio, functional reliability is high.
The purpose of this utility model is achieved in that the utility model comprises bridge rectifier and high-frequency generator, also comprise passive power factor correcting circuit, described passive power factor correcting circuit comprises diode D1 to D4, capacitor C 2, capacitor C 3, inductance L and electrochemical capacitor C4, the positive pole of bridge rectifier is connected with inductance L, the other end of inductance L is connected with the positive pole of diode D1 and the negative pole of diode D2, the negative pole of diode D1 and capacitor C 2, the positive pole of electrochemical capacitor C4 is connected with the anode of high-frequency generator, the negative pole of the positive pole of diode D2 and diode D3, the other end of capacitor C 2, capacitor C 3 is connected with fluorescent lamp circuit, the negative pole of the positive pole of diode D3 and diode D4, the other end of capacitor C 3 is connected with the negative pole of bridge rectifier, and the positive pole of diode D4 is connected with the negative pole of electrochemical capacitor C4 and the negative terminal of high-frequency generator.
Technique effect of the present utility model is: the utility model combines passive power factor correcting circuit with bridge rectifier, high-frequency generator and fluorescent lamp circuit, make electric ballast energy steady operation at permanent input current state, simultaneously can effectively improve input power factor again, reduce Harmonics of Input content, improve lamp current crest ratio.Use all kinds of 15-125W electronic ballast for fluoresent lamps of this circuit assembling, its input power factor is greater than 0.98, the input current each harmonic can reach GB/T15144-94 standard code " L " level level, meet the electromagnetic compatibility current harmonics requirement of IEC61000-3-2 standard code, lamp current crest ratio is less than 1.7.When being used in the fluorescent tube of upper pipe pressure, crest factor can satisfy the requirement of domestic and international standard preferably.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is circuit theory diagrams of having used electronic fluorescent lamp lighting circuit of the present utility model.
Embodiment
As shown in Figure 1, the electronic fluorescent lamp lighting circuit of present embodiment is made up of input electromagnetic interface filter 1, AC/DC bridge rectifier 2, passive power factor correcting circuit 3, DC/AC high-frequency generator 4 and fluorescent lamp circuit 5, wherein import electromagnetic interface filter 1, AC/DC bridge rectifier 2, DC/AC high-frequency generator 4 and fluorescent lamp circuit 5 and all belong to existing mature technology, be not described in detail in this.Aforementioned passive power factor correcting circuit 3 is by diode D1 to D4, capacitor C 1, capacitor C 2, capacitor C 3, inductance L and electrochemical capacitor C4 form, the positive pole of AC/DC bridge rectifier 2 is connected with inductance L with capacitor C 1, the other end of inductance L and the positive pole of diode D1 are connected with negative pole with diode D2, the negative pole of diode D1 and capacitor C 2, the positive pole of electrochemical capacitor C4 is connected with the anode of DC/AC high-frequency generator 4, the negative pole of the positive pole of diode D2 and diode D3, the other end of capacitor C 2, capacitor C 3 is connected with fluorescent lamp circuit 5, the negative pole of the positive pole of diode D3 and diode D4, the other end of capacitor C 1, the other end of capacitor C 3 is connected with the negative pole of AC/DC bridge rectifier 2, and the positive pole of diode D4 is connected with the negative pole of electrochemical capacitor C4 and the negative terminal of DC/AC high-frequency generator 4.Capacitor C 1 in the utility model is looked its effect and is decided what to use when adjusting electromagnetic compatibility.
Diode D1, D2, D3, D4 generally adopt withstand voltage diode greater than 100V in the utility model; The range of capacity of capacitor C 1, C2, C3 is 1000PF-1 μ F, and is withstand voltage greater than 50V; The range of capacity of electrochemical capacitor C4 is 4.7 μ F-100 μ F, and is withstand voltage greater than 50V; The inductance value of inductance L is greater than 0.1mH.
Claims (4)
1. electric ballast with PPFC (Passive Power Factor Correction), comprise bridge rectifier and high-frequency generator, it is characterized in that: also comprise passive power factor correcting circuit, it comprises diode D1 to D4, capacitor C 2, capacitor C 3, inductance L and electrochemical capacitor C4, the positive pole of bridge rectifier is connected with inductance L, the other end of inductance L is connected with the positive pole of diode D1 and the negative pole of diode D2, the negative pole of diode D1 and capacitor C 2, the positive pole of electrochemical capacitor C4 is connected with the anode of high-frequency generator, the negative pole of the positive pole of diode D2 and diode D3, the other end of capacitor C 2, capacitor C 3 is connected with fluorescent lamp circuit, the negative pole of the positive pole of diode D3 and diode D4, the other end of capacitor C 3 is connected with the negative pole of bridge rectifier, and the positive pole of diode D4 is connected with the negative pole of electrochemical capacitor C4 and the negative terminal of high-frequency generator.
2. the electric ballast with PPFC (Passive Power Factor Correction) according to claim 1, it is characterized in that: described passive power factor correcting circuit also comprises capacitor C 1, one end of capacitor C 1 is connected with inductance L with the positive pole of bridge rectifier, and the other end is connected with capacitor C 3 with the negative pole of bridge rectifier, the positive pole of diode D3, the negative pole of diode D4.
3. the electric ballast with PPFC (Passive Power Factor Correction) according to claim 1, it is characterized in that: described diode D1 to D4 adopts withstand voltage diode greater than 100V, the range of capacity of capacitor C 2, capacitor C 3 is 1000PF-1 μ F and withstand voltage greater than 50V, the range of capacity of electrochemical capacitor C4 is 4.7 μ F-100 μ F, and withstand voltage greater than 50V, the inductance value of inductance L is greater than 0.1mH.
4. the electric ballast with PPFC (Passive Power Factor Correction) according to claim 2, it is characterized in that: described diode D1 to D4 adopts withstand voltage diode greater than 100V, the range of capacity of capacitor C 1, capacitor C 2, capacitor C 3 is 1000PF-1 μ F and withstand voltage greater than 50V, the range of capacity of electrochemical capacitor C4 is 4.7 μ F-100 μ F, and withstand voltage greater than 50V, the inductance value of inductance L is greater than 0.1mH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03247568 CN2624582Y (en) | 2003-06-18 | 2003-06-18 | Electronic ballast with passive power factor correction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03247568 CN2624582Y (en) | 2003-06-18 | 2003-06-18 | Electronic ballast with passive power factor correction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2624582Y true CN2624582Y (en) | 2004-07-07 |
Family
ID=34252438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03247568 Expired - Fee Related CN2624582Y (en) | 2003-06-18 | 2003-06-18 | Electronic ballast with passive power factor correction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2624582Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101848584A (en) * | 2010-06-01 | 2010-09-29 | 杭州意博高科电器有限公司 | 230V passive high-power factor circuit |
| CN101442867B (en) * | 2007-11-19 | 2012-11-07 | 上海亚明灯泡厂有限公司 | Passive high power element circuit |
-
2003
- 2003-06-18 CN CN 03247568 patent/CN2624582Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101442867B (en) * | 2007-11-19 | 2012-11-07 | 上海亚明灯泡厂有限公司 | Passive high power element circuit |
| CN101848584A (en) * | 2010-06-01 | 2010-09-29 | 杭州意博高科电器有限公司 | 230V passive high-power factor circuit |
| CN101848584B (en) * | 2010-06-01 | 2012-12-19 | 杭州意博高科电器有限公司 | 230V passive high-power factor circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040707 Termination date: 20120618 |