CN202738193U - LED fluorescent lamp power supply compatible with fluorescent lamp ballast - Google Patents
LED fluorescent lamp power supply compatible with fluorescent lamp ballast Download PDFInfo
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- CN202738193U CN202738193U CN 201220348091 CN201220348091U CN202738193U CN 202738193 U CN202738193 U CN 202738193U CN 201220348091 CN201220348091 CN 201220348091 CN 201220348091 U CN201220348091 U CN 201220348091U CN 202738193 U CN202738193 U CN 202738193U
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- fluorescent lamp
- ballast
- module
- factor correction
- lamp ballast
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Abstract
The utility model discloses an LED fluorescent lamp power supply compatible with a fluorescent lamp ballast. The LED fluorescent lamp power supply compatible with the fluorescent lamp ballast comprises a rectification module, a fluorescent lamp ballast discrimination module and a power factor correction and constant current control module, wherein the rectification module, the fluorescent lamp ballast discrimination module and the power factor correction and constant current control module are connected in order, the rectification module is used for converting alternating current commercial power into direct current and outputting the direct current to the fluorescent lamp ballast discrimination module, the fluorescent lamp ballast discrimination module is used for discriminating connected fluorescent lamp ballasts and outputting the direct current to the power factor correction and constant current control module, and the power factor correction and constant current control module is used for carrying out power factor correction and outputting the constant direct current.
Description
Technical field
The utility model relates to LED daylight lamp power source technical field, be specifically related to a kind of LED daylight lamp power source of compatible fluorescent lamp ballast, starter and ballast on the fluorescent light pipe holder namely need not to dismantle, on the fluorescent light pipe holder anything all need not to change, the LED daylight lamp power source that just can work is directly loaded onto in four ends input on the applicable fluorescent light pipe holder.
Background technology
As depicted in figs. 1 and 2, conventional fluorescent is used two class ballasts, be respectively inductance type (low frequency formula) and electronic type (high frequency type) ballast, because conventional fluorescent needs starter to start, the inductance type ballast generation is several times as much as the civil power high pressure and starts fluorescent lamp, and electronic ballast utilizes resonant tank to produce the high pressure starting.Four input ports are arranged on the conventional fluorescent lamp support, and existing LED fluorescent lamp only needs two ac input end mouths, so just has the place of contradiction, want the LED fluorescent lamp is inserted the words of normally lighting in traditional light pipe holder:
1. for the Fluorescent Light and Fixtures that inductance type ballast is housed: must say first that starter takes off, simultaneously with two termination short circuits at LED fluorescent lamp two ends together.
2. for the Fluorescent Light and Fixtures that electronic ballast is housed: electronic ballast must be taken off, will exchange input and directly receive 4 lamp bases of Fluorescent Light and Fixtures, simultaneously with two plug short circuits at LED fluorescent lamp two ends together.
Top method terminal consumer can't use, and must have the quite technical ability of specialty, and it is very inconvenient, dangerous to operate simultaneously.
The utility model content
The technical problems to be solved in the utility model provides a kind of LED daylight lamp power source of compatible fluorescent lamp ballast, overcomes the defective that the LED daylight lamp power source of prior art can't directly be used on traditional fluorescent light pipe holder.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to be:
The utility model provides a kind of LED daylight lamp power source of compatible fluorescent lamp ballast, comprise rectification module, fluorescent lamp ballast discrimination module and power factor correction and constant-current control module, this rectification module, this fluorescent lamp ballast discrimination module links to each other with constant-current control module successively with this power factor correction, this rectification module is used for converting electric main to direct current, then this direct current is outputed to this fluorescent lamp ballast discrimination module, this fluorescent lamp ballast discrimination module is for the fluorescent lamp ballast that connects being distinguished and this direct current is outputed to this power factor correction and constant-current control module that this power factor correction and constant-current control module are used for carrying out power factor correction and exporting constant direct current.
Preferably, this rectification module comprises the Double-bridge type rectification circuit.
Preferably, this rectification module also comprises resistance-capacitance network, and this resistance-capacitance network is used for preventing that starter from constantly triggering and prevents that electronic ballast from producing resonance high-voltage.
Preferably, this fluorescent lamp ballast discrimination module comprises the connection in series-parallel loop of distinguishing circuit and LED lamp string of inductance type ballast and electronic ballast.
According to embodiment of the present utility model, the circuit of distinguishing of this inductance type ballast and electronic ballast is made of current transformer L1, diode D9, field effect transistor Q6 and triode Q1 and auxiliary circuit.
According to embodiment of the present utility model, this power factor correction and constant-current control module are made of PFC control chip U2, flyback transformer T1, switching tube Q7, optical coupler U1, triode Q2, resistance R 4 and resistance R 14.
The beneficial effects of the utility model: the utility model LED daylight lamp power source, no matter which kind of ballast has been installed in the conventional fluorescent lamp support, all need not Fluorescent Light and Fixtures is made any change, can use the LED fluorescent lamp after the utility model LED power supply packed into, so just the universal use for the LED fluorescent lamp provides very easily condition.
Description of drawings
The utility model comprises following accompanying drawing:
Fig. 1 is prior art fluorescent lamp inductance type ballast circuit diagram;
Fig. 2 is prior art fluorescence lamp electronic formula ballast circuit figure;
Fig. 3 is the module diagram of the utility model power supply;
Fig. 4 is the utility model embodiment rectification module circuit diagram;
Fig. 5 is the utility model embodiment fluorescent lamp ballast discrimination module circuit diagram;
Fig. 6 is the utility model embodiment power factor correction and constant flow module circuit diagram.
Embodiment
The below is described in further detail the utility model with embodiment with reference to the accompanying drawings:
Such as Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, the LED daylight lamp power source of the compatible fluorescent lamp ballast of the utility model comprises rectification module, fluorescent lamp ballast discrimination module and power factor correction and constant-current control module, this rectification module, this fluorescent lamp ballast discrimination module links to each other with constant-current control module successively with this power factor correction, this rectification module is used for converting electric main to direct current, then this direct current is outputed to this fluorescent lamp ballast discrimination module, this fluorescent lamp ballast discrimination module is for the fluorescent lamp ballast that connects being distinguished and this direct current is outputed to this power factor correction and constant-current control module that this power factor correction and constant-current control module are used for carrying out power factor correction and exporting constant direct current.Preferably, this rectification module comprises the Double-bridge type rectification circuit.This rectification module also comprises resistance-capacitance network, and this resistance-capacitance network is used for preventing that starter from constantly triggering and prevents that electronic ballast from producing resonance high-voltage.This fluorescent lamp ballast discrimination module comprises the connection in series-parallel loop of distinguishing circuit and LED lamp string of inductance type ballast and electronic ballast.According to embodiment of the present utility model, the circuit of distinguishing of this inductance type ballast and electronic ballast is made of current transformer L1, diode D9, field effect transistor Q6 and triode Q1 and auxiliary circuit.This power factor correction and constant-current control module are by PFC(Power Factor Correction, power factor correction) control chip U2, flyback transformer T1, switching tube Q7, optical coupler U1, triode Q2, resistance R 4 and resistance R 14 consist of.
If be equipped with in the Fluorescent Light and Fixtures of inductance type ballast if the utility model LED daylight lamp power source is packed into, only have unidirectional electric current to flow through in the current transformer L1.Because the relation of Same Name of Ends, can't the positively biased conducting at current transformer L1 other end rectifying tube D9, needed voltage is provided can't for field effect transistor Q6 normally, the circuit of back will make LED1 and two groups of lamps of LED2 conspire to create to be series connection.The higher voltage that the power supply input that inductance type ballast is come in produces at output by rectifier bridge, power supply provides a positive bias to triode Q3 to voltage-stabiliser tube ZD1 by starting resistance R11 and resistance R 10, R27, thereby consist of a serial regulating circuit, the 8th pin through U2 starts work to IC, during normal operation, the high-frequency signal that the auxiliary winding of transformer T2 produces provides operating voltage to U2 after R30 and D18 damping rectification.Resistance-capacitance network is to provide frequency compensated to U2 between 1 pin of U2 (chip L6562 or SN03A) and 2 pin, the peak current value of 4 pin configuration switch pipe Q7.7 pin output high-frequency switching signal is to metal-oxide-semiconductor Q7, after offering the high frequency switching of switching tube Q7 and transformer T1/T2, through time utmost point rectifying tube D13 rectification, 14/C15/C17 is level and smooth through capacitor C, the current sampling that also has triode Q2, feed back to the 5th pin of U2 through optical coupler U1, a constant current control loop offers LED1 and the LED2 series connection is used thereby produced, and has guaranteed the normal operation of LED fluorescent lamp under rated power.
, have bidirectional current in the current transformer L1 and produce in the Fluorescent Light and Fixtures of ballast that electronic type is installed if the utility model LED daylight lamp power source is packed into; Pass through like this voltage of generation of the forward conduction of D9, make field effect transistor Q6 enter conducting state, the associated circuit network of back, LED1 lamp string and the connection in series-parallel of LED2 lamp will be got up use, the voltage that the electric current of coming in by electronic ballast like this produces after by rectification is directly in LED1 and LED2.Because this moment, voltage can be lower, use so it can directly offer LED, but this voltage can't reach the starting resistor of the PFC control chip U2 of back, U2 can not work, and the constant-current control circuit of back will can not worked yet.
Those skilled in the art do not break away from essence of the present utility model and spirit, can there be the various deformation scheme to realize the utility model, the above only is the better feasible embodiment of the utility model, be not so limit to interest field of the present utility model, the equivalent structure that all utilization the utility model specifications and accompanying drawing content are done changes, and all is contained within the interest field of the present utility model.
Claims (6)
1. the LED daylight lamp power source of a compatible fluorescent lamp ballast, it is characterized in that: comprise rectification module, fluorescent lamp ballast discrimination module and power factor correction and constant-current control module, described rectification module, described fluorescent lamp ballast discrimination module links to each other with constant-current control module successively with described power factor correction, described rectification module is used for converting electric main to direct current, then described direct current is outputed to described fluorescent lamp ballast discrimination module, described fluorescent lamp ballast discrimination module is for the fluorescent lamp ballast that connects being distinguished and described direct current is outputed to described power factor correction and constant-current control module that described power factor correction and constant-current control module are used for carrying out power factor correction and exporting constant direct current.
2. the LED daylight lamp power source of compatible fluorescent lamp ballast according to claim 1, it is characterized in that: described rectification module comprises the Double-bridge type rectification circuit.
3. the LED daylight lamp power source of compatible fluorescent lamp ballast according to claim 2, it is characterized in that: described rectification module also comprises resistance-capacitance network, described resistance-capacitance network is used for preventing that starter from constantly triggering and prevents that electronic ballast from producing resonance high-voltage.
4. the LED daylight lamp power source of compatible fluorescent lamp ballast according to claim 1, it is characterized in that: described fluorescent lamp ballast discrimination module comprises the connection in series-parallel loop of distinguishing circuit and LED lamp string of inductance type ballast and electronic ballast.
5. the LED daylight lamp power source of compatible fluorescent lamp ballast according to claim 4, it is characterized in that: the circuit of distinguishing of described inductance type ballast and electronic ballast is made of current transformer L1, diode D9, field effect transistor Q6 and triode Q1 and auxiliary circuit.
6. the LED daylight lamp power source of compatible fluorescent lamp ballast according to claim 1, it is characterized in that: described power factor correction and constant-current control module are made of PFC control chip U2, flyback transformer T1, switching tube Q7, optical coupler U1, triode Q2, resistance R 4 and resistance R 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220348091 CN202738193U (en) | 2012-07-18 | 2012-07-18 | LED fluorescent lamp power supply compatible with fluorescent lamp ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220348091 CN202738193U (en) | 2012-07-18 | 2012-07-18 | LED fluorescent lamp power supply compatible with fluorescent lamp ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202738193U true CN202738193U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220348091 Expired - Fee Related CN202738193U (en) | 2012-07-18 | 2012-07-18 | LED fluorescent lamp power supply compatible with fluorescent lamp ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202738193U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769975A (en) * | 2012-07-18 | 2012-11-07 | 东莞市领冠半导体照明有限公司 | LED (Light Emitting Diode) fluorescent lamp power supply of compatible fluorescent lamp ballast |
| US9557044B2 (en) | 2014-10-20 | 2017-01-31 | Energy Focus, Inc. | LED lamp with dual mode operation |
-
2012
- 2012-07-18 CN CN 201220348091 patent/CN202738193U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102769975A (en) * | 2012-07-18 | 2012-11-07 | 东莞市领冠半导体照明有限公司 | LED (Light Emitting Diode) fluorescent lamp power supply of compatible fluorescent lamp ballast |
| US9557044B2 (en) | 2014-10-20 | 2017-01-31 | Energy Focus, Inc. | LED lamp with dual mode operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20190718 |
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| CF01 | Termination of patent right due to non-payment of annual fee |