CN2722406Y - Effective ballast of fluorescent lamp - Google Patents
Effective ballast of fluorescent lamp Download PDFInfo
- Publication number
- CN2722406Y CN2722406Y CN 200420036828 CN200420036828U CN2722406Y CN 2722406 Y CN2722406 Y CN 2722406Y CN 200420036828 CN200420036828 CN 200420036828 CN 200420036828 U CN200420036828 U CN 200420036828U CN 2722406 Y CN2722406 Y CN 2722406Y
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- ballast
- coil
- fluorescent lamp
- phase difference
- relay
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Abstract
The utility model discloses an electric induction ballast for an electricity-saving fluorescent lamp, which comprises an iron core (4), a ballast coil (3), a secondary coil (5), a rectifying diode (D), a switch element (7), a relay (6) and a phase difference capacitor (C3). The ballast coil and the secondary coil are winded on the iron core; a control coil (J) of the relay is connected in a collector loop of a switch triode. One end of the ballast coil is as a fire line connecting end (1) of a power supply, and the other end of the ballast coil is the foot connecting end (8) of the fluorescent lamp. One end of the phase difference capacitor is connected with the foot connecting end (8) of the fluorescent lamp of the ballast coil, and the other end of the phase difference capacitor is connected with an earth line connecting end (2) of the power supply. Two normally-closed contacts (J1) and (J3) of the relay are arranged, and are respectively used as glow starting switches of a primary tube (L1) and a second tube (L2). The two tubes of the fluorescent lamp and the ballast coil are in a connection in series state. The voltage on the ballast coil is reduced greatly, and the power factor is improved greatly. The phase difference capacitor causes the tubes to work stably after the tubes are lighten up.
Description
Technical field
The utility model relates to the structure of the iron inductance formula ballast that a kind of fluorescent lamp uses, a kind of electricity-saving type fluorescent lamp Inductive ballast.
Background technology
Fluorescent lamp ballast has Inductive ballast and electric ballast two classes.Inductive ballast utilizes the nonlinear characteristic of iron inductance, when impedance reduces fast after fluorescent tube is lighted, with the electric current restriction within the specific limits, guarantees that it is in normal operating conditions.Inductive ballast has simple in structure, working stability, advantage such as cheap, but because the tube voltage drop of the starting voltage of fluorescent lamp during than steady operation is much higher, after fluorescent lamp is lighted, on the inductor core sizable pressure drop must be arranged, thereby power factor is lower, generally has only about 0.52.Electric ballast is transformed into high frequency with civil power, resupplies fluorescent lamp, saves iron inductance, thereby power factor is higher.But the electric ballast structure is complicated, and price is higher, and can produce the high-frequency electromagnetic pollution.
Summary of the invention
The utility model is intended to propose the higher Inductive ballast of a kind of power factor, a kind of electricity-saving type fluorescent lamp Inductive ballast.
This electricity-saving type fluorescent lamp Inductive ballast comprises iron core, ballast coil, secondary coil, rectifier diode, switch element and relay.Switch element is made up of charging resistor, delay capacitor, switch triode.Ballast coil and secondary coil are all on iron core.The power end of switch element links to each other with the output of secondary coil by rectifier diode.The control coil of relay is connected in the collector loop of switch triode, and the normally-closed contact of relay is as the starter switch of fluorescent lamp.One end of ballast coil is the power firestreak link, and the other end is a daylight lamp base link.It also comprises a phase difference electric capacity, and an end of this phase difference electric capacity links to each other with the daylight lamp base link of ballast coil, and the other end and power ground link join.The normally-closed contact of described relay has two, respectively as the starter switch of first fluorescent tube and second fluorescent tube.
This electricity-saving type fluorescent lamp Inductive ballast and two fluorescent tubes are used.Make two normally-closed contacts of relay respectively two filaments of a fluorescent tube are connected, the respectively free end an of filament with two fluorescent tubes is connected together again, then, more in addition two free ends of fluorescent tube filament are joined with the daylight lamp base link and the power ground link of ballast coil respectively.Two fluorescent tubes and ballast coil become the series connection connection status.Behind the power connection, the filament of two fluorescent tubes forms the loop by the normally-closed contact of relay, and filament is preheated.Simultaneously, delay capacitor charges by charging resistor, when charging reaches certain voltage, and the switch triode conducting, relay control coil gets electric, the relay adhesive, normally-closed contact disconnects, and two fluorescent tubes are lighted simultaneously.Wherein phase difference electric capacity makes not zero passage simultaneously of electric current in the fluorescent tube and voltage, and making can steady operation behind the lamp tube starting.This electricity-saving type fluorescent lamp Inductive ballast is owing to adopt the iron inductance ballast, no electromagnetic pollution, because two fluorescent tubes are connected with ballast coil after being in series again, the pressure drop on the ballast coil reduces greatly, thereby power factor greatly improves again.
Description of drawings
Accompanying drawing is the structure principle chart of this electricity-saving type fluorescent lamp Inductive ballast.
Embodiment
As shown in the figure, this electricity-saving type fluorescent lamp Inductive ballast comprises iron core 4, ballast coil 3, secondary coil 5, rectifier diode D, switch element 7 and relay 6.Switch element is made up of charging resistor R1, delay capacitor C2, switch triode BG.Charging resistor R1 connects with delay capacitor C2, and its tie point links to each other with the base stage of switch triode BG, the other end ground connection of charging resistor.All on iron core 4, the power end of switch element 7 links to each other with the output of secondary coil 5 by rectifier diode D for ballast coil 3 and secondary coil 5.Capacitor C 1 is a filter capacitor.The control coil J of relay 6 is connected in the collector loop of switch triode BG.One end of ballast coil 3 is a power firestreak link 1, and the other end is a daylight lamp base link 8.It also comprises a phase difference capacitor C 3, and an end of this phase difference electric capacity links to each other with the daylight lamp base link 8 of ballast coil 3, and the other end and power ground link 2 join.The normally-closed contact of relay has two J1, J3, respectively as the starter switch of the first fluorescent tube L1 and the second fluorescent tube L2.
As shown in the figure, make two normally-closed contact J1, J3 of relay respectively two filaments of a fluorescent tube are connected (just normally-closed contact being connected on the position that connects starter usually), J1 links to each other two filaments of L1 among the figure, and J3 links to each other two rhizoids of L2.Free end with each filament of two fluorescent tubes links again, becomes public connecting end 9.And then in addition two free ends of fluorescent tube filament are joined with the daylight lamp base link 8 and the power ground link 2 of ballast coil respectively.Two fluorescent tube L1, L2 and ballast coil 3 become the state of being connected in series.Behind the power connection, the filament of two fluorescent tubes forms the loop by normally-closed contact J1, the J3 of relay, and filament is preheated.Simultaneously, delay capacitor C2 is by charging resistor R1 charging.When charging reaches certain voltage, switch triode BG conducting, relay control coil J gets electric, the relay adhesive, normally-closed contact J1, J3 disconnect, and two fluorescent tubes are lighted simultaneously.Wherein phase difference capacitor C 3 makes not zero passage simultaneously of electric current in the fluorescent tube and voltage, and guaranteeing can steady operation behind the lamp tube starting.
As shown in the figure, this electricity-saving type fluorescent lamp Inductive ballast can also increase by the second phase difference capacitor C 4.One end and the power ground link 2 of this second phase difference electric capacity join, and the other end is the public connecting end 9 of two fluorescent tubes.This second phase difference electric capacity makes that fluorescent tube is easier to be lighted.
Through the reality test, use the fluorescent tube of two 40W, drive with this electricity-saving type fluorescent lamp Inductive ballast, during supply voltage 220V, the tube voltage drop of every fluorescent lamp is about 100V, operating current 0.43A.The running parameter of fluorescent tube is all in normal range (NR).Power factor is more than 0.9.Lamp lighting-up is normal, stable.When supply voltage reduced, the charging interval of delay capacitor C2 prolonged, thereby prolonged the warm-up time of tube filament, and preheating is more abundant, helps the fluorescent tube build-up of luminance.When supply voltage was reduced to 200V, two fluorescent tubes still can normally be lighted.For 30W, the less fluorescent tube of 20W constant power, tube voltage drop is lower, and is when using this electricity-saving type fluorescent lamp Inductive ballast, just lower to the requirement of supply voltage.
Claims (2)
1, a kind of electricity-saving type fluorescent lamp Inductive ballast, comprise iron core (4), ballast coil (3), secondary coil (5), rectifier diode (D), switch element (7) and relay (6), switch element is by charging resistor (R1), delay capacitor (C2), switch triode (BG) is formed, ballast coil and secondary coil are all on iron core, the power end of switch element links to each other with the output of secondary coil by rectifier diode, the control coil of relay (J) is connected in the collector loop of switch triode, the normally-closed contact of relay is as the starter switch of fluorescent lamp, one end of ballast coil is power firestreak link (1), the other end is a daylight lamp base link (8), it is characterized in that it also comprises a phase difference electric capacity (C3), one end of this phase difference electric capacity links to each other with the daylight lamp base link (8) of ballast coil, the other end and power ground link (2) join, the normally-closed contact of described relay has two (J1), (J3), respectively as the starter switch of first fluorescent tube (L1) and second fluorescent tube (L2).
2, electricity-saving type fluorescent lamp Inductive ballast as claimed in claim 1, it is characterized in that it also comprises the second phase difference electric capacity (C4), one end of this second phase difference electric capacity and power ground link (2) join, and the other end is the public connecting end (9) of two fluorescent tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420036828 CN2722406Y (en) | 2004-06-14 | 2004-06-14 | Effective ballast of fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420036828 CN2722406Y (en) | 2004-06-14 | 2004-06-14 | Effective ballast of fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2722406Y true CN2722406Y (en) | 2005-08-31 |
Family
ID=35012776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420036828 Expired - Fee Related CN2722406Y (en) | 2004-06-14 | 2004-06-14 | Effective ballast of fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2722406Y (en) |
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2004
- 2004-06-14 CN CN 200420036828 patent/CN2722406Y/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 |