CN2641983Y - Fluorescent lamp ballast - Google Patents
Fluorescent lamp ballast Download PDFInfo
- Publication number
- CN2641983Y CN2641983Y CN 03271304 CN03271304U CN2641983Y CN 2641983 Y CN2641983 Y CN 2641983Y CN 03271304 CN03271304 CN 03271304 CN 03271304 U CN03271304 U CN 03271304U CN 2641983 Y CN2641983 Y CN 2641983Y
- Authority
- CN
- China
- Prior art keywords
- lamp
- output
- full
- reversing switch
- 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
Links
Abstract
The utility model relates to a fluorescent lamp ballast which is formed by mutually connecting a full-wave voltage doubling rectifying circuit, a starting and converting circuit and a reversing switch, wherein the output voltage of the full-wave voltage doubling rectifying circuit goes to both ends of a lamp through the reversing switch and then accomplishes quick start of the cold state for the lamp. The reversing switch is reversing ceaselessly until the lamp lights by starting. Start signals cease, and converting signals are output. The polarity of the voltage at the two of both ends of the lamp timely changes, which can prolong the life of the fluorescent lamp and improve the light efficiency of the lamp. The fluorescent lamp ballast has the characteristics of energy saving, low consumption, reliable operation, high durability, etc.
Description
Affiliated technical field
The utility model belongs to electricity field, specifically a kind of fluorescent lamp ballast.
Background technology
The ballast of fluorescent lamp adapted has " inductance " and " electronics " two classes at present, electric ballast is than the Inductive ballast power saving, but functional reliability is not as Inductive ballast, July 4 calendar year 2001, Chinese Patent Office announced a kind of fluorescent lamp ballast (patent No. ZL00215443.9), though its reliable operation and power saving, but need to use two relays, the cost height, start function and be only limited to forward, negative sense can not start, the useful life of fluorescent tube is influenced, and enabling signal is non-digitalization also, can not guarantee that relay changes when the alternating current zero passage.Therefore, design has two-way startup function and control signal total digitalization, guarantees the no-spark conversion of relay, improves the reliability of work.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of dependable performance, and is with low cost, has the power saving fluorescent lamp ballast of two-way startup function.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of fluorescent lamp ballast, be provided with full-wave voltage doubler, it is characterized in that full-wave voltage doubler and start change-over circuit all connecing AC power, the output series connection reversing switch of full-wave voltage doubler connects fluorescent tube, start the output of the input termination full-wave voltage doubler of change-over circuit, start the control end of the output termination reversing switch of change-over circuit.After its energized, the 220V alternating voltage is by the full-wave voltage doubler output HIGH voltage, after the reversing switch Polarity Control, be added to lamp tube ends, implementing cold conditions starts fast, if fluorescent tube fails to be activated, start change-over circuit output enabling signal, reversing switch is ceaselessly commutated, be activated until fluorescent tube and light, enabling signal stops.After this, output switching signal control reversing switch timing reversing, the polarity of change lamp tube ends voltage is with this prolonging lamp tube useful life and raising luminous efficiency.
The utility model electronic component electrical quantity is big, can guarantee the reliability at long time continuous working.Two exits of the filament of fluorescent tube and place in circuit together, as long as in use every end has a leading foot to contact with lamp bracket well, just can operate as normal, improved the service behaviour of fluorescent lamp, have distinguishing features such as energy-conservation, low consumption, low cost, reliable operation.
Description of drawings
The utility model is described in detail by embodiment below in conjunction with accompanying drawing.
Fig. 1 is a calcspar of the present utility model.
Fig. 2 is an electrical schematic diagram of the present utility model.
Mark among the figure: diode D
1-D
6, voltage stabilizing didoe DW, triode BG
1-BG
2, resistance R
1-R
7, capacitor C
1-C
8, integrated circuit (IC)
1CD4069, IC
2Photoelectrical coupler, IC
3CD4060, relay J, inductor L.
Embodiment
Shown in Figure 1, reversing switch uses the double-pole switching relay, full-wave voltage doubler and startup change-over circuit all connect AC power, the output series connection reversing switch of full-wave voltage doubler connects fluorescent tube, start the output of the input termination full-wave voltage doubler of change-over circuit, start the control end of the output termination reversing switch of change-over circuit.
Shown in Figure 2, diode D
1-D
4Be connected into bridge rectifier, ac input end series capacitance C
2Connect AC power, capacitor C
1And C
2Following termination AC power, the upper end meets the output of bridge rectifier, C respectively
1But the negative output terminal of upper end full wave and voltage doubling rectification, C
3Last terminating diode D
5Positive pole, another termination capacitor C of negative pole and AC power
4, D
5Negative pole be the positive output end of full-wave voltage doubler, interconnection becomes reversing switch to two normally opened contacts of two keys relay J with normally-closed contact, two cuttves connect the output of full-wave voltage doubler respectively, and two intersection contact series reactor L connect the two ends of fluorescent tube; Voltage stabilizing didoe DW and capacitor C
5The series connection AC power, the negative pole of voltage stabilizing didoe meets D
6Positive pole, D
6Negative pole and the positive pole of DW connect capacitor C
6, integrated circuit (IC)
3V
SSThe end and the termination C that resets
6Negative pole, IC
3V
DDTermination C
6Positive pole, resistance R
5, R
6And C
8With IC
3Internal circuit is formed oscillator, and the output digital signal is through R behind multistage frequency division
7With BG
2Base stage connect BG
2Emitter meet C
6Negative pole, collector electrode meets series relay coil and C
6Positive pole connect; Integrated circuit (IC)
1Two not gate F
1With F
2Series connection, F
1And F
2Output meet R respectively
4And C
7, R
4And C
7Another termination F
1Input constitute multivibrator, F
2Output termination triode BG
1Emitter, the integrated utmost point meets R
5An end, base stage is passed through R
2And R
3Series connection C
6Negative pole, R
2And R
3The series connection contact meet photoelectrical coupler IC
2Output, IC
2Another termination C
6Positive pole, IC
2Input series resistance R
1Connect the output of full-wave voltage doubler.
After the utility model was connected AC power, the whole circuit of bridge-type was through C
2Accumulate is to C
1And C
3Charging is again through C
5To C
4Alternating current obtains full wave and voltage doubling output, is added to lamp tube ends through reversing switch J and inductor L.This voltage is enough to directly start fluorescent tube under cold conditions, if fluorescent tube is not activated this high voltage through R
1IC is lighted in step-down
2Interior light emitting diodes output Low ESR, make triode BG
1Base stage be in high potential and end IC
3With external R
5Deng the oscillator starting oscillation of forming, through IC
3Frequency division output starts digital signal, control triode BG
2Conducting with end, startup is finished in the commutation that reversing switch is not stopped.After fluorescent tube was activated, internal resistance reduced voltage thereupon and drops to rated value, can not light IC
2The internal illumination pipe, IC
2The output high resistant, BG
2Base stage be in electronegative potential and lead, can be with IC
1Not gate F
2The digital signal of vibration output deliver to IC
3The input of oscillator makes IC
3The oscillating circuit failure of oscillation can only be to IC
1The oscillator signal counting is through IC
3Behind the frequency division, output is switching signal control reversing switch regularly, changes the polarity that is added in lamp tube ends voltage.
Claims (1)
1, a kind of fluorescent lamp ballast, be provided with full-wave voltage doubler, it is characterized in that full-wave voltage doubler and start change-over circuit all connecing AC power, the output series connection reversing switch of full-wave voltage doubler connects fluorescent tube, start the output of the input termination full-wave voltage doubler of change-over circuit, start the control end of the output termination reversing switch of change-over circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 03271304 CN2641983Y (en) | 2003-07-23 | 2003-07-23 | Fluorescent lamp ballast |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 03271304 CN2641983Y (en) | 2003-07-23 | 2003-07-23 | Fluorescent lamp ballast |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2641983Y true CN2641983Y (en) | 2004-09-15 |
Family
ID=34300664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 03271304 Expired - Fee Related CN2641983Y (en) | 2003-07-23 | 2003-07-23 | Fluorescent lamp ballast |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2641983Y (en) |
-
2003
- 2003-07-23 CN CN 03271304 patent/CN2641983Y/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 |