CN206323599U - A kind of fluorescent tube LED drive circuit of compatible electronic ballast and civil power - Google Patents
A kind of fluorescent tube LED drive circuit of compatible electronic ballast and civil power Download PDFInfo
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- CN206323599U CN206323599U CN201621320854.9U CN201621320854U CN206323599U CN 206323599 U CN206323599 U CN 206323599U CN 201621320854 U CN201621320854 U CN 201621320854U CN 206323599 U CN206323599 U CN 206323599U
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- fluorescent tube
- rectification circuit
- civil power
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Abstract
The utility model provides the fluorescent tube LED drive circuit of a kind of compatible electronic ballast and civil power, including：Filament analog circuit, the first rectification circuit, the second rectification circuit, LCR electric currents adjustment circuit, DC DC reduction voltage circuits；The filament analog circuit, the first rectification circuit, the first loop of LCR electric currents adjustment circuit formation；Second rectification circuit, DC DC reduction voltage circuits formation second servo loop；The LCR matrix current adjustment circuits are by reducing or drawing high the electric current that the first rectification circuit is exported so that in the certain scope of the output power of circuit.The utility model provides the fluorescent tube LED drive circuit of a kind of compatible electronic ballast and civil power, and compatible electronic ballast and civil power simultaneously, can be adjusted to ballast current output, power output uniformity is good, and, low cost few using electronic component, miniaturized products design can be met.
Description
Technical field
The utility model is related to a kind of LED drive circuit, more particularly to a kind of LED drive circuit of fluorescent tube.
Background technology
Conventional electronic ballast is adapted to the power supply of fluorescent lamp, and LED power driver is only suitable for the power supply of LED.Electronics
Ballast output for high voltage-small current, and the output of LED power supply driver is low-voltage, high-current.
Electric ballast refers to drive electric light source using electronic technology, is allowed to produce the required electronic equipment illuminated.Therewith
Corresponding is inductance type ballast.Modern fluorescent lamp more and more uses electric ballast, light compact, it might even be possible to by electricity
Sub-ballast and fluorescent tube etc. are integrated, meanwhile, electric ballast can generally have starter function concurrently, so can save again
Single starter.Electric ballast can also have it is more multi-functional, such as can be by improving power frequency or current wave
Shape (such as becoming square wave) improves or eliminated the scintillation of fluorescent lamp；Also by power inverter process fluorescent lamp can be made
Use dc source.Some shortcomings of traditional inductance type rectifier make it be taken by growing ripe electric ballast
Generation.
Therefore, in daylight lamp holder now on the market, situation is extremely complex, there is the daylight lamp holder suitable for LED, i.e., directly
Exchange the lamp socket of input；Also there is the lamp socket using electric ballast or Inductive ballast.Consumer is difficult to understand own home
In lamp socket be any on earth, LED fluorescent lamp tube is bought back rashly will produce the situation for a little not working or damaging.
The product of compatible electronic ballast and civil power can be met simultaneously, it is use complicated IC control circuits or hand switch more
The modes such as switching are realized.Either complicated IC identification control modes or hand switch switching control mode can all bring height
The circuit arrangement of cost and higher fault rate, and electronic component is more, volume makes more greatly it be difficult to meet wanting for structure space
Ask, design is often limited.And traditional scheme is short of the electric ballast output for considering different size in compatible electronic ballast
Electric current difference problem, product is put on different electric ballasts in use, power difference is larger, causes potential safety hazard.
Utility model content
Technical problem underlying to be solved in the utility model is to provide the daylight of a kind of compatible electronic ballast and civil power
Fluorescent tube LED drive circuit, compatible electronic ballast and civil power simultaneously, can be adjusted, output work to ballast current output
Rate uniformity is good, and few using electronic component, low cost, can meet miniaturized products design.
In order to solve above-mentioned technical problem, the utility model provides the daylight of a kind of compatible electronic ballast and civil power
Fluorescent tube LED drive circuit, including：Filament analog circuit, the first rectification circuit, the second rectification circuit, LCR electric currents adjustment circuit,
DC-DC reduction voltage circuits；
The filament analog circuit, the first rectification circuit, the first loop of LCR electric currents adjustment circuit formation；Described second is whole
Current circuit, DC-DC reduction voltage circuits formation second servo loop；
When the contact pin of the fluorescent tube is electrically connected with city, low-frequency current passes through second servo loop powering load；The day
When the contact pin of light lamp tube is connected with electric ballast, the high frequency electric that electric ballast is exported gives the load by the first loop
Power supply；
The LCR matrix current adjustment circuits by reduce or draw high the first rectification circuit export electric current so that circuit it is defeated
Go out in the certain scope of Power Control.
In a preferred embodiment：The filament analog circuit include being connected in series in electric capacity C1 between contact pins A 1, A2,
C2；And it is connected in series in electric capacity C3, C4 between contact pins A 3, A4.
In a preferred embodiment：The LCR electric currents adjustment connection is in the input and C1, C2 of the first rectification circuit
Common port between, it includes the inductance L5 being connected in parallel and electric capacity C13.
In a preferred embodiment：In the second servo loop also include a low pass circuit, it include inductance L1, L2, L3,
L4；The inductance L1 is connected between the input of the rectification circuit of contact pins A 1 and second；Inductance L2 is connected to contact pins A 2 and second
Between the input of rectification circuit；Inductance L3 is connected between the input of the rectification circuit of contact pins A 3 and second；Inductance L4 connections
Between the input of the rectification circuit of contact pins A 4 and second.
In a preferred embodiment：Second rectification circuit includes rectifier bridge BR1 and resistance C6, the resistance C6 settings
Between rectifier bridge BR1 output end and GND.
In a preferred embodiment：The DC-DC reduction voltage circuits are BUCK reduction voltage circuits.
A kind of compatible electronic ballast and the fluorescent tube LED drive circuit of civil power that the utility model is provided, Ke Yitong
When meet compatible electronic ballast and civil power, and by the way of both-end enters electricity.User is when mounted without considering compatible feelings
Condition and mounting means, plug and play are very convenient.Also, LCR adjustment circuits are provided with circuit, can be by the output of circuit
Power is maintained in certain scope, and no matter user uses the electric ballast of which kind of model, can accomplish compatibility, defeated
Go out uniformity good.
Also, a kind of compatible electronic ballast and the fluorescent tube LED drive circuit of civil power provided by bright utility model,
Electronic component is few, low cost, can meet miniaturized products design.
Brief description of the drawings
Fig. 1 is the circuit diagram of the utility model preferred embodiment；
Fig. 2 is the connection diagram of fluorescent tube and electric ballast in the utility model preferred embodiment；
Fig. 3 is a kind of connection diagram of fluorescent tube and civil power in the utility model preferred embodiment；
Fig. 4 is another connection diagram of fluorescent tube and civil power in the utility model preferred embodiment；
Fig. 5 is another connection diagram of fluorescent tube and civil power in the utility model preferred embodiment；
Fig. 6 is another connection diagram of fluorescent tube and civil power in the utility model preferred embodiment；
Embodiment
Hereafter the utility model is described further by the drawings and specific embodiments.
With reference to Fig. 1, a kind of fluorescent tube LED drive circuit of compatible electronic ballast and civil power, including：Filament simulation electricity
Road 1, low pass circuit 3, the first rectification circuit 4, the second rectification circuit 5, LCR electric currents adjustment circuit 2, DC-DC reduction voltage circuits 6；
The filament analog circuit 1 includes electric capacity C1, the C2 being connected in series between contact pins A 1, A2；And be connected in series
Electric capacity C3, C4 between contact pins A 3, A4.Xc=1/ (2 π fc) is calculated according to capacitive reactance, capacitor value should be glimmering close to what is replaced
The thermal resistance value of light lamp tube filament, fluorescent tube filament design is simulated with this, and electric ballast could complete filament pre-heating.Wherein,
Xc represents electric capacity capacitor value, and π takes 3.14, f to represent pre-heat frequency when electric ballast starts filament pre-heating, and c represents to be used
Capacitance.
LCR electric currents adjustment circuit 2 be connected to the input of the first rectification circuit 5 and electric capacity C1, C2 common port it
Between, it includes the inductance L5 being connected in parallel and electric capacity C13.
Therefore, filament analog circuit 1, first loop of LCR electric currents adjustment circuit 2 and first formation of rectification circuit 4.Work as contact pin
When connecting electric ballast, as shown in Figure 2.Due to the high-pass effect of electric capacity C1, C2, C3, C4 in filament analog circuit 1.Electronics
The high frequency electric of ballast output can only enter the first loop, and circuit 2 and first is adjusted by filament analog circuit 1, LCR electric currents
It is used to power to LED after the rectification of rectification circuit 4.Therefore the purpose of compatible electronic ballast is just completed.Because electricity on the market
Sub-ballast model is different, the high frequency electric power difference of output is larger or can not be compatible the problems such as.Work as electric ballast
When output current is larger, it can be adjusted by inductance L5 and electric capacity C13 combination according to its output frequency, clamp down on loop current.
Ballast for preceding cutting output, it is in parallel by adjusting inductance L5 and electric capacity C13, its angle of flow size can be adjusted, is drawn high back
Road size of current.By adjusting inductance L5 and electric capacity C13 parameter, high current can be limited, while drawing high smaller output current
Ballast output, so can be by the output power of whole machine in a preferable scope.
The low pass circuit 3, it includes inductance L1, L2, L3, L4；The inductance L1 is connected to the rectification of contact pins A 1 and second
Between the input of circuit 5；Inductance L2 is connected between the input of the rectification circuit 5 of contact pins A 2 and second；Inductance L3 is connected to
Between the input of the rectification circuit 5 of contact pins A 3 and second；Inductance L4 be connected to the rectification circuit 5 of contact pins A 4 and second input it
Between.
Second rectification circuit 5 includes rectifier bridge BR1 and resistance C6, the resistance C6 are arranged at the defeated of rectifier bridge BR1
Go out between end and GND.
The DC-DC reduction voltage circuits 6 are common BUCK reduction voltage circuits.
When the contact pin of the fluorescent tube is electrically connected with city, such as Fig. 3-4.Low-frequency current is by the filament analog circuit 1
Electric capacity is obstructed；Low-frequency current passes through second servo loop powering load.
Therefore, the utility model is provided a kind of compatible electronic ballast and the fluorescent tube LED drive circuit of civil power, can
To meet compatible electronic ballast and civil power simultaneously, and by the way of both-end enters electricity.User is simultaneous without considering when mounted
Condition of showing mercy and mounting means, plug and play are very convenient.Also, LCR adjustment circuits are provided with circuit, can be by circuit
Power output is maintained in certain scope, and no matter user uses the electric ballast of which kind of model, can accomplish and
Hold, output-consistence is good.
Also, a kind of compatible electronic ballast and the fluorescent tube LED drive circuit of civil power provided by bright utility model,
Electronic component is few, low cost, can meet miniaturized products design.
When the load voltage of design is smaller, the output voltage of electric ballast is relatively low, and its undertension is to start DC-DC
Reduction voltage circuit 6, now low pass circuit 3 can cancel, further save space and cost.It can be supplied when now connecing civil power as single-ended
Electricity.Such as Fig. 5,6.
The above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by scope of the claims.
Claims (6)
1. the fluorescent tube LED drive circuit of a kind of compatible electronic ballast and civil power, it is characterised in that including：Filament simulation electricity
Road, the first rectification circuit, the second rectification circuit, LCR electric currents adjustment circuit, DC-DC reduction voltage circuits；
The filament analog circuit, the first rectification circuit, the first loop of LCR electric currents adjustment circuit formation；Second rectified current
Road, DC-DC reduction voltage circuits formation second servo loop；
When the contact pin of the fluorescent tube is electrically connected with city, low-frequency current passes through second servo loop powering load；The fluorescent lamp
When the contact pin of pipe is connected with electric ballast, the high frequency electric that electric ballast is exported is supplied by the first loop to the load
Electricity；
The LCR matrix current adjustment circuits are by reducing or drawing high the electric current that the first rectification circuit is exported so that the output work of circuit
Rate is controlled in certain scope.
2. the fluorescent tube LED drive circuit of a kind of compatible electronic ballast according to claim 1 and civil power, its feature
It is：The filament analog circuit includes electric capacity C1, the C2 being connected in series between contact pins A 1, A2；And be connected in series in slotting
Electric capacity C3, C4 between pin A3, A4.
3. the fluorescent tube LED drive circuit of a kind of compatible electronic ballast according to claim 2 and civil power, its feature
It is：The LCR electric currents adjust connection between the input of the first rectification circuit and C1, C2 common port, and it includes
The inductance L5 and electric capacity C13 being connected in parallel.
4. the fluorescent tube LED drive circuit of a kind of compatible electronic ballast according to claim 1 and civil power, its feature
It is：Also include a low pass circuit in the second servo loop, it includes inductance L1, L2, L3, L4；The inductance L1 is connected to slotting
Between the input of pin A1 and the second rectification circuit；Inductance L2 is connected between the input of the rectification circuit of contact pins A 2 and second；
Inductance L3 is connected between the input of the rectification circuit of contact pins A 3 and second；Inductance L4 is connected to the rectification circuit of contact pins A 4 and second
Input between.
5. the fluorescent tube LED drive circuit of a kind of compatible electronic ballast according to claim 1 and civil power, its feature
It is：Second rectification circuit includes rectifier bridge BR1 and resistance C6, the resistance C6 are arranged at rectifier bridge BR1 output end
Between GND.
6. the fluorescent tube LED drive circuit of a kind of compatible electronic ballast according to claim 5 and civil power, its feature
It is：The DC-DC reduction voltage circuits are BUCK reduction voltage circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621320854.9U CN206323599U (en) | 2016-12-05 | 2016-12-05 | A kind of fluorescent tube LED drive circuit of compatible electronic ballast and civil power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621320854.9U CN206323599U (en) | 2016-12-05 | 2016-12-05 | A kind of fluorescent tube LED drive circuit of compatible electronic ballast and civil power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206323599U true CN206323599U (en) | 2017-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621320854.9U Active CN206323599U (en) | 2016-12-05 | 2016-12-05 | A kind of fluorescent tube LED drive circuit of compatible electronic ballast and civil power |
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| CN (1) | CN206323599U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113455106A (en) * | 2019-02-20 | 2021-09-28 | 昕诺飞控股有限公司 | LED driver for replacing LED lighting unit of high-intensity discharge lamp |
-
2016
- 2016-12-05 CN CN201621320854.9U patent/CN206323599U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113455106A (en) * | 2019-02-20 | 2021-09-28 | 昕诺飞控股有限公司 | LED driver for replacing LED lighting unit of high-intensity discharge lamp |
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