CN2161050Y - Wide-voltage ballast for fluorescent lamp - Google Patents
Wide-voltage ballast for fluorescent lamp Download PDFInfo
- Publication number
- CN2161050Y CN2161050Y CN 93215509 CN93215509U CN2161050Y CN 2161050 Y CN2161050 Y CN 2161050Y CN 93215509 CN93215509 CN 93215509 CN 93215509 U CN93215509 U CN 93215509U CN 2161050 Y CN2161050 Y CN 2161050Y
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- CN
- China
- Prior art keywords
- diode
- utility
- model
- voltage
- bridge rectifier
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- 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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Abstract
The utility model relates to a wide-voltage ballast for fluorescent lamps. The utility model is characterized an electric induction coil T is connected in series with the input return circuit of a bridge rectifier circuit composed of a diode D1, a diode D2, a diode D3 and a diode D4, and a resistance R is connected with the output return circuit of the bridge rectifier circuit in parallel. One third of the tap of the electric induction coil T is in bridge connection with the other terminal line of the power supply through capacitances. A capacitance C2 and a capacitance C3 are respectively connected with the diode D3 and the diode D4 arranged on the lower bridge arm of the bridge rectifier circuit in parallel. The utility model is suitable for fluorescent lamps from 20W to 40W with a starting voltage lower than 110V and a working voltage between 70V to 270V. The utility model can start up only once reliably without starters.
Description
The utility model is about fluorescent lamp ballast.
The long-term traditional type ballast that uses, starting resistor must be more than 180V, and when voltage is low, start difficulty, are easy to damage starter and fluorescent tube.Even the electric ballast that has occurred, starting resistor also must be 140
More than, operating voltage is 120-240
And when supply voltage was lower than 150V, switching tube itself brought bigger power consumption, and very easily damaged when high pressure or peak overtension appear in power supply.
The purpose of this utility model is to avoid the deficiencies in the prior art part, and a kind of wide pressure, low consumption fluorescent lamp ballast are provided.With improve the fluorescent tube working condition, increase the service life, conserve energy.
The purpose of this utility model is realized by following technical scheme.
The utility model is in the input circuit of the bridge rectifier that is made of diode D1, D2, D3, D4, series inductance coil T, parallel resistance R in the output loop; / 3rd taps of described inductance coil T are passed through capacitor C 1 cross-over connection to another end line of power supply; Following brachium pontis diode D3, the D4 of described bridge rectifier last shunt capacitance C2, C3 respectively.
The utility model is compared prior art and is had following advantage.
The utility model is applicable to the 20W-40W fluorescent lamp, its starting resistor＜110
, operating voltage is 70
-270
The utility model does not use starter, disposable reliable starting.Greatly prolonged fluorescent tube useful life.Its low pressure power savings is remarkable, and no electrical equipment disturbs, and is simple in structure, easy for installation.
Accompanying drawing is the utility model circuit structure diagram.
By the following examples, in conjunction with the accompanying drawings the utility model is further described.
Embodiment:
Referring to accompanying drawing.Diode D1, D2, D3, D4 constitute bridge rectifier, capacitor C 2, C3 are in parallel with following brachium pontis diode D3, D4 respectively, inductance coil T is serially connected in the bridge rectifier input circuit, resistance R is connected across the output loop of bridge rectifier, to another end line of power supply d, a point and c point are respectively the two ends of inductance coil T to 1/3rd tap b points of inductance coil T by capacitor C 1 cross-over connection, and the ab section is T1, the bc section is T2, and L is a fluorescent tube.
When voltage＞160
The time, at the positive and negative half cycle of electric current, by D2, C2, T and T, C3, D1 capacitor C 2, C3 are charged respectively, at this moment, form multiplication of voltage at the two ends of fluorescent tube L, thereby make fluorescent tube open combustion rapidly.After this, because fluorescent tube L both end voltage descends, the operating voltage of fluorescent tube L is just provided by rectification circuit, and the setting of capacitor C 1 can improve power factor.Surveying common 30W fluorescent lamp power factor is 0.45, and the utility model is about 0.57, and increases with the voltage drop low power factor, when voltage is about 130V, is about 1; When voltage is lower than 130V, transform to capacitive by perception.
When voltage is lower than 160
(90
-160
) time, in the moment of energising, because at this moment T is equivalent to connect with C2, C3, power supply is bigger to C2, C3 charging current by T, because C2, C3 capacity are less, this charging current reduces rapidly, and this moment will be in the higher self induction electromotive force of inductance coil T two ends induction, be added in d, c end and continue charging, fluorescent tube L both end voltage is raise rapidly C2, C3.Simultaneously,, form the resonance potential of about 50V-90V at the T1 two ends, boost, fluorescent tube is played the effect of auxiliary starter by T2 because C1 connects with T1.After the startup,, make fluorescent tube L under low voltage (＜70 because the effect of C1, T1, T2, C2, C3 compensates fluorescent tube L two ends operating voltage automatically
) still can keep work, and have higher illumination.
Capacitor C 2, C3 can be used as filter element when operate as normal, alleviate stroboscopic phenomenon.
Resistance R the very big low pressure reliability of starting continuously that improved is set.Resistance R makes C1, C2, C3 finish discharge within a short period of time, in order to restarting for capacitor C 1, C2, C3 provide discharge loop.
Experiment is learnt, adopts the 30W fluorescent tube, 110
Under the voltage, total power consumption is about 18V, and illumination is than 220
Common 20W fluorescent lamp taller (the normal power consumption of 20W fluorescent lamp is about 28W) under the voltage; 70
Voltage is work down, the not enough 3W of meritorious power consumption, but brightness is equivalent to 220
The 8W fluorescent lamp.
Claims (1)
1, the wide pressure ballast of a kind of fluorescent lamp is characterized in that in the input circuit of the bridge rectifier that is made of diode D1, D2, D3, D4, series inductance coil T, parallel resistance R in the output loop; / 3rd taps of described inductance coil T are passed through capacitor C 1 cross-over connection to another end line of power supply; Following brachium pontis diode D3, the D4 of described bridge rectifier last shunt capacitance C2, C3 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93215509 CN2161050Y (en) | 1993-06-09 | 1993-06-09 | Wide-voltage ballast for fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93215509 CN2161050Y (en) | 1993-06-09 | 1993-06-09 | Wide-voltage ballast for fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2161050Y true CN2161050Y (en) | 1994-04-06 |
Family
ID=33795987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93215509 Expired - Fee Related CN2161050Y (en) | 1993-06-09 | 1993-06-09 | Wide-voltage ballast for fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2161050Y (en) |
-
1993
- 1993-06-09 CN CN 93215509 patent/CN2161050Y/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 |