CN2199662Y - Adjustable light ballast for fluorescent lamp - Google Patents
Adjustable light ballast for fluorescent lamp Download PDFInfo
- Publication number
- CN2199662Y CN2199662Y CN 94219301 CN94219301U CN2199662Y CN 2199662 Y CN2199662 Y CN 2199662Y CN 94219301 CN94219301 CN 94219301 CN 94219301 U CN94219301 U CN 94219301U CN 2199662 Y CN2199662 Y CN 2199662Y
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- CN
- China
- Prior art keywords
- circuit
- voltage
- input
- output
- fluorescent lamp
- 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 adjustable light ballast for fluorescent lamps, which is composed of an input interference suppression circuit, a rectification circuit, an input over-voltage protection circuit, a control circuit, a voltage adjusting circuit, an oscillating and exciting circuit, an output voltage display circuit, a filament heating circuit, etc. A feeding power supply is respectively connected with the rectification circuit and the input end of a low-voltage power supply; the output of an input voltage sample circuit is connected with a bidirectional thyristor via the control and triggering circuit. The input end of the voltage adjusting circuit is connected with the output end of the rectification circuit; the output end of the voltage adjusting circuit is respectively connected with the voltage display and oscillating and exciting circuits. Because the over-voltage protection circuit, the voltage adjusting circuit, the output display circuit, the filament heating circuit, etc., are adopted, the adjustable light ballast for fluorescent lamps is suitable for 80-240V electric networks; when in 140-190V, the ballast can be adjusted to normal illumination; the power can be made to be reduced under normal voltage.
Description
The utility model relates to a kind of circuit arrangement that is used for discharge lamp igniting or control.
Because power supply grid voltage is on the low side and it is big to rise and fall, cause many areas to exist fluorescent lamp to be difficult to starter or promptly enable starter but because of voltage too low, too little and the phenomenon that can not normal illumination of luminous flux, especially in peak times of power consumption in night and some supply power voltage area on the low side, contradiction is more outstanding.Electric ballast miscellaneous has appearred for this reason.
The CN87212090 patent disclosure a kind of electric ballast, comprise bridge rectifier and vibratory stimulation circuit, and by in emitter circuit, sealing in diode, at base circuit and driving transformer secondary and connect diode and resistance after, reach the purpose of low-voltage starter and economize on electricity.
The inventor provides a kind of in the CN91216445.X patent can hang down starter under the line voltage, can make fluorescent tube normally luminous under low line voltage again, the electric ballast that is suitable in wide-voltage range.It comprises codan, bridge-type/voltage doubling rectifing circuit, control circuit and vibratory stimulation circuit etc., and control circuit comprises decompression capacitor, low-voltage regulated power supply, input voltage sample circuit, circuits for triggering and bidirectional triode thyristor etc.
In addition, existing fluorescent lamp ballast can't reduce luminous flux by manual adjustments, to reach vision protection and the purpose of saving electric energy.
The purpose of this utility model is to provide a kind of can obtain to be equivalent to illuminating effect under the normal voltage at starter under the low-voltage and by manual adjustments; pass through in the time of can needing again to regulate, reduce luminous flux to reach vision protection and the fluorescent lamp ballast of saving electric energy.
The utility model comprises rectification circuit, input overvoltage protection and control circuit thereof, vibratory stimulation circuit.Wherein importing overvoltage protection and control circuit thereof is made up of with circuits for triggering and bidirectional triode thyristor circuit low-tension supply, input voltage sample circuit, control; power supply is connected with the input of rectification circuit, low-tension supply respectively, and the output of input voltage sample circuit connects the bidirectional triode thyristor circuit behind control and circuits for triggering.
In addition, be provided with regulating circuit, output voltage display circuit and filament heating circuit.The output of the input termination rectification circuit of regulating circuit, and output connects output voltage display circuit and vibratory stimulation circuit respectively.The output of vibratory stimulation circuit is connected with external fluorescent tube.
Regulating circuit is made up of one-way SCR and circuits for triggering thereof, and the latter is made up of with potentiometer oscillating circuit and adjusting, and its pressure regulation result is shown by the output voltage display circuit, with the reflection dimming effect.
The voltage drive circuit comprises vibratory stimulation modular circuit, LC resonant tank and power transistor.
Filament heating circuit can add at the output winding of vibratory stimulation circuit around two secondary coils draws pulse voltage so that filament is heated.
With existing technology type seemingly, rectification circuit can be made up of bridge heap and filter capacitor.
The utility model is owing to above-mentioned protection circuit against input over-voltage of employing and manual voltage regulation circuit, thereby when supply power voltage is lower than certain set point, the input voltage sample circuit will make control circuit output high level, the bidirectional triode thyristor conducting that overvoltage protection is used.At this moment, as regulating the adjusting potentiometer of manual voltage regulation circuit, make pressure regulation with the full conducting of one-way SCR, himself pressure drop is very little, and then rectification circuit becomes voltage doubling rectifing circuit, and output dc voltage is exported much larger than the standard bridge rectifier, plays boosting.Regulate with potentiometer at diverse location, the one-way SCR pressure drop will change in a big way in, thereby the vibratory stimulation circuit acquisition voltage that varies in size, and it may be higher or lower than standard bridge rectifier output voltage, reach to increase/purpose of dim light.Filament heating circuit makes filament starter under the situation of being heated, and burning-point is of value to prolonging lamp tube useful life.
The utility model is applicable to that supply power voltage is 80～240V, when input voltage during at 140～190V, and the illuminating effect in the time of all can making fluorescent lamp reach normal voltage by manual adjustments.When voltage during, also can fluorescent lamp power greatly be reduced by manual adjustments near normal voltage.
Fig. 1 is a block diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Fig. 3 is an another kind of circuits for triggering schematic diagram of the present utility model.
Embodiment 1: as Fig. 1, the utility model is imported codan (1), rectification circuit (2), input overvoltage protection and control circuit (3～6), manual voltage regulation circuit (7), input voltage display circuit (8), vibratory stimulation circuit (9) and filament heating circuit (10) by power supply and is formed.Input overvoltage protection and control circuit thereof are made up of with circuits for triggering (5) and bidirectional triode thyristor (6) input voltage sample circuit (3), low-tension supply (4), control.The manual voltage regulation circuit is made up of regulating networks, oscillatory trigger circuit and one-way SCR.Direct voltage after the adjusting show by the output voltage display circuit and offer the vibratory stimulation circuit with starter, light fluorescent tube T.Filament heating circuit helps to improve the lamp works state.
As Fig. 2, power supply input codan adopts transformer B.Decompression capacitor C
1With diode D
2, D
3, D
4Form low-tension supply.D
1, R
1, C
3With potentiometer W
1Form the input voltage sample circuit.The control action of bidirectional triode thyristor is by the integrated circuit (IC) that is connected into bistable circuit
1Carry out.When input voltage is lower than certain set point, IC
13 pin output high level, bidirectional triode thyristor VS
1Obtain trigger current and conducting, this moment is if connect K switch and regulate W
3Make one-way SCR D
7Full conducting, then this moment, rectification circuit was a voltage multiplying rectifier, output dc voltage plays and adds lustre effect far above the standard bridge circuit.Regulate W
3Can obtain the different effects that adds lustre.If input voltage is higher, cut-off switch K is then because W
2Branch road resistance choosing greater than
3Branch road, VS
2The two ends pressure drop is bigger, and output voltage will play the dim light effect less than standard bridge rectifier voltage.Resistance R
5And D
7Be VS
2Circuits for triggering provide low-tension supply, R
7,
2, R
8,
3, C
7And double base diode D
8The composition pulse oscillator is VS
2Trigger impulse is provided.The height of rectifier output voltage is by R
9, D
9, D
10, D
11, R
10, R
11The output voltage display circuit of forming shows.When output voltage is lower than rated value, green light D
10Bright, when output voltage is higher than rated value, red colored lamp D
11Bright.When output voltage was rated value, 2 current potentials of A, B equated, D
10, D
11All do not work.The vibratory stimulation IC circuit
2Obtain after the direct current supply driving power pipe G
1, G
2Transmission power removes to light fluorescent tube T.Tube filament is drawn the pulse voltage heating by twice level coil ab and the cd of coil L.When input voltage is higher than default protection value, input sampling circuit will make IC
1-3 pin are low level, VS
1End because of trigger current disappears, Output Voltage in Rectified Circuits will be not can overgauge bridge rectifier voltage, thereby guarantee that circuit working is in the normal voltage scope.
In Fig. 2, be between the tie point of an input point of bridge rectifier and two electric capacity, to insert the bidirectional triode thyristor that overvoltage protection is used, its controlled circuit control and conducting or end.
Embodiment 2: as Fig. 3, with among Fig. 2 by IC
1Change by two-stage transistor G Deng control and the circuits for triggering formed
3, G
4The bistable circuit that circuit is formed.Its principle is same as described above.
Claims (7)
1, increase and decrease fluorescent lamp ballast, comprise rectification circuit, input overvoltage protection and control circuit thereof, vibratory stimulation circuit, input overvoltage protection and control circuit thereof are made up of with circuits for triggering and bidirectional triode thyristor circuit low-tension supply, input voltage sample circuit, control; It is characterized in that power supply is connected with the input of rectification circuit, low-tension supply respectively, the output of input voltage sample circuit connects the bidirectional triode thyristor circuit behind control and circuits for triggering; Other establishes regulating circuit, output voltage display circuit and filament heating circuit, the output of the input termination rectification circuit of regulating circuit, and output connects output voltage display circuit and vibratory stimulation circuit respectively, and the output of vibratory stimulation circuit is connected with external fluorescent tube.
2, increase and decrease fluorescent lamp ballast as claimed in claim 1 is characterized in that said regulating circuit is made up of one-way SCR and pulse generator circuits for triggering thereof, and its circuits for triggering are by pulse-generator circuit and regulate and form with potentiometer.
3, increase and decrease fluorescent lamp ballast as claimed in claim 2 is characterized in that triggering the pulse generator employing double base diode pulse oscillator of pressure regulation with one-way SCR.
4, increase and decrease fluorescent lamp ballast as claimed in claim 1 is characterized in that the heating of said filament is that output winding at the vibratory stimulation circuit adds the secondary coil around two voltage pulse outputs.
5, increase and decrease fluorescent lamp ballast as claimed in claim 1 is characterized in that its input establishes power supply input codan.
6, increase and decrease fluorescent lamp ballast as claimed in claim 5 is characterized in that said power supply input codan adopts anti-tampering transformer.
7, increase and decrease fluorescent lamp ballast as claimed in claim 1 is characterized in that the bidirectional triode thyristor that is used to control adopts integrated circuit or the two-stage transistor circuit that is connected into the bistable circuit form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94219301 CN2199662Y (en) | 1994-08-18 | 1994-08-18 | Adjustable light ballast for fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94219301 CN2199662Y (en) | 1994-08-18 | 1994-08-18 | Adjustable light ballast for fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2199662Y true CN2199662Y (en) | 1995-05-31 |
Family
ID=33834207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94219301 Expired - Fee Related CN2199662Y (en) | 1994-08-18 | 1994-08-18 | Adjustable light ballast for fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2199662Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008074231A1 (en) * | 2006-12-21 | 2008-06-26 | The Hong Kong Polytechnic University | A voltage regulation and control circuit of illumination lamplight |
-
1994
- 1994-08-18 CN CN 94219301 patent/CN2199662Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008074231A1 (en) * | 2006-12-21 | 2008-06-26 | The Hong Kong Polytechnic University | A voltage regulation and control circuit of illumination lamplight |
| CN101207961B (en) * | 2006-12-21 | 2011-11-16 | 香港理工大学 | Electric voltage regulating and controlling circuit of illumination light |
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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 |