CN2200274Y - Electronic ballast - Google Patents
Electronic ballast Download PDFInfo
- Publication number
- CN2200274Y CN2200274Y CN 94214416 CN94214416U CN2200274Y CN 2200274 Y CN2200274 Y CN 2200274Y CN 94214416 CN94214416 CN 94214416 CN 94214416 U CN94214416 U CN 94214416U CN 2200274 Y CN2200274 Y CN 2200274Y
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- circuit unit
- oscillation
- capacitor
- output
- electric ballast
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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 an electronic ballast belonging to general parts of an illuminating apparatus. The electronic ballast uses a resistor and a capacitor to form a soft start circuit, uses an oscillation transformer in simple structure and a crystal triode as a switching device to form the starting voltage of an oscillator with higher output frequency, and is additionally provided with relative timed guard electronic components. The utility model has the characteristics of simple and reasonable structure, small volume, light weight, high efficiency, energy saving, long service life, etc.
Description
The utility model belongs to the general application component of lighting device, is a kind of electric ballast.
A large amount of at present fluorescent lamps that use, great majority still need connect ballast and starter starts illumination, because it is longer that the restriction of ballast and starter structure in use exists start-up time, the flicker number of times is more and because of power factor is lower during startup, the high deficiency of energy consumption.
The purpose of this utility model is to provide a kind of electric ballast.This ballast serves as the main symmetrical expression oscillator that constitutes with high back-pressure, high-frequency, high-power and oscillation transformer, makes fluorescent tube luminous to overcome the existing in prior technology deficiency under the operating voltage of high frequency oscillation pulse by choke.
Overall structure of the present utility model is:
A kind of electric ballast is by the circuit and the power supply that are installed on the box body interior circuit board, lamp lead constitutes, circuit is by current rectifying and wave filtering circuit unit 1, soft starting circuit unit 2, oscillation circuit unit 3 and output circuit unit 4 interconnect composition, the input that it is characterized in that conventional current rectifying and wave filtering circuit unit is connected with AC power, its output connects the input of soft starting circuit unit, the soft starting circuit unit is by the resistance R 1 of mutual serial connection, capacitor C3 and be connected R1, the resistance R 2 of C3 common port is formed, the input of oscillation circuit unit connects the output of soft starting circuit unit, this circuit unit 3 is by at least one high back-pressure, high-frequency, high-power electronic switch device or transistor and oscillation transformer B are main formation, the input of output circuit unit is connected with the secondary winding of oscillation transformer B, its output is four lamp leads, and this circuit unit serves as main formation with high frequency flow vibration coil L1.
The specific structural features of oscillation circuit unit is:
The electronic switching device of oscillation circuit unit is two high back-pressures, high-frequency, High-power Semiconductor Triode BG1, BG2; be interconnected to two with two elementary windings of crystal diode D5, D6 and oscillation transformer respectively and be interconnected to two symmetrical oscillators, in oscillator, connect the corresponding protection electronic devices and components.
The electronic devices and components that dispose in other each circuit units also have:
Two elementary winding one ends of transformer B or with an end of a secondary winding between respectively be connected capacitor C4, a C5, connect capacitor C7 between two lead ends of fluorescent tube.
The rectifier of current rectifying and wave filtering circuit is a bridge rectifier, and on crystal diode D3, D4 branch road and meet mutual series capacitors C1, C2.
Accompanying drawing of the present utility model has:
Fig. 1 is the circuit theory diagrams of electric ballast.
Accompanying drawing has provided embodiment of the present utility model, further specifies as follows in conjunction with the accompanying drawings:
The current rectifying and wave filtering circuit of this electric ballast is that a bridge rectifier and two filtering capacitor C1, C2 are interconnected to constitute; can be soft starting circuit unit and oscillation circuit unit operating voltage is provided; the capacitor C3 of soft starting circuit unit; resistance R 1, R3; cooperate capacitor C4, C5 to provide the starting of oscillation electric pulse for oscillation circuit unit; each electronic devices and components also has the effect of protection High-power Semiconductor Triode; capacitor C4, C5 are that slow starting capacitor can also be protected fluorescent tube 5 in addition, prolong its useful life.Exportable high-frequency output voltage is through the B1 secondary winding after the oscillating circuit starting of oscillation, and height is gripped circle L1, tube filament, capacitor C6, C7 constitute the loop lights fluorescent lamp.
Each crystal diode of this electric ballast all adopts the IN4007 model, and two transistor BG1, BG2 are MJE13003.The number of turn of high frequency choke coil winding is extremely thousands of circles of hundreds of, is wrapped on the ferromagnetism skeleton, and each winding of transformer B twines can be on the ring core of ferromagnetism material.
The obtained technological progress of the utility model is:
This electric ballast has not only overcome in use existing deficiency of former old-fashioned ballast, starter, and the service behaviour of more similar electric ballast is more perfect. It has set up the protection electronic devices and components to transistor, and resistance R 3, R4, R5, R6 and crystal diode D5, D6 make its working life longer, and in addition soft starting electronic components and parts resistance R 1, R2, capacitor C3 also have the effect of protection transistor concurrently. Capacitor C4, C5 can protect fluorescent tube effectively as slow starting capacitor, increase the service life. This electric ballast is that fluorescent tube is started in the high frequency low voltage next time in a word, fluorescent lamp is the flicker free phenomenon when starting and after lighting, and can be by changing the specifications and models of each main components, the fluorescent tube that adapts to different capacity, have simple and reasonable, volume is little, and in light weight and power factor is higher, effectively the characteristics such as prolonging lamp tube and ballast self working life.
Claims (4)
1, a kind of electric ballast is by the circuit and the power supply that are installed on the box body interior circuit board, lamp lead constitutes, circuit is by current rectifying and wave filtering circuit unit 1, soft starting circuit unit 2, oscillation circuit unit 3 and output circuit unit 4 interconnect composition, the input that it is characterized in that conventional current rectifying and wave filtering circuit unit is connected with AC power, its output connects the input of soft starting circuit unit, the soft starting circuit unit is by the resistance R 1 of mutual serial connection, capacitor C3 and be connected R1, the resistance R 2 of C3 common port is formed, the input of oscillation circuit unit connects the output of soft starting circuit unit, this circuit unit 3 is by at least one high back-pressure, high-frequency, high-power electronic switch device or transistor and oscillation transformer B are main formation, the input of output circuit unit is connected with the secondary winding of oscillation transformer B, its output is four lamp leads, and this circuit unit serves as main formation with high frequency flow vibration coil L1.
2, electric ballast according to claim 1; the electronic switching device that it is characterized in that oscillation circuit unit is two high back-pressures, high-frequency, High-power Semiconductor Triode BG1, BG2; two elementary windings with crystal diode D5, D6 and oscillation transformer are interconnected to two symmetrical oscillators respectively, connect the corresponding protection electronic devices and components in oscillator.
3, electric ballast according to claim 1 and 2, it is characterized in that two elementary winding one ends of transformer B or with an end of a secondary winding between respectively be connected capacitor C4, a C5, connect capacitor C7 between two lead ends of fluorescent tube.
4, electric ballast according to claim 1 and 2, the rectifier that it is characterized in that current rectifying and wave filtering circuit is a bridge rectifier, and on crystal diode D3, D4 branch road and meet mutual series capacitors C1, C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94214416 CN2200274Y (en) | 1994-06-14 | 1994-06-14 | Electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94214416 CN2200274Y (en) | 1994-06-14 | 1994-06-14 | Electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2200274Y true CN2200274Y (en) | 1995-06-07 |
Family
ID=33830676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94214416 Expired - Fee Related CN2200274Y (en) | 1994-06-14 | 1994-06-14 | Electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2200274Y (en) |
-
1994
- 1994-06-14 CN CN 94214416 patent/CN2200274Y/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 |