CN106385733A - LED fluorescent lamp driving circuit compatible with electronic and inductive and alternating current - Google Patents
LED fluorescent lamp driving circuit compatible with electronic and inductive and alternating current Download PDFInfo
- Publication number
- CN106385733A CN106385733A CN201610892622.9A CN201610892622A CN106385733A CN 106385733 A CN106385733 A CN 106385733A CN 201610892622 A CN201610892622 A CN 201610892622A CN 106385733 A CN106385733 A CN 106385733A
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- Prior art keywords
- current
- circuit
- daylight lamp
- terminal
- led daylight
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
Abstract
The invention provides an LED fluorescent lamp driving circuit compatible with electronic, inductive and alternating current. The circuit comprises a first rectifier and filter circuit whose two input ends are connected to the L and N terminals of the LED fluorescent lamp, a second rectifier and filter circuit whose two input ends are connected to L1 and N1 terminals of the LED fluorescent lamp, a relay switch switching circuit, a BUCK constant current driving circuit, and a voltage detecting circuit. The two input ends of a relay are correspondingly connected to the two output ends of the first rectifier and filter circuit, two normally open contacts are correspondingly connected to the output end of the second rectifier and filter circuit, the input end of the BUCK constant current driving circuit is correspondingly connected to the two normally open contacts of the relay, the output end of the BUCK constant current driving circuit is connected to an LED lamp string. One input end of the voltage detecting circuit is connected to the N terminal of the LED fluorescent lamp, and the other input end is connected to the N1 terminal of the LED fluorescent lamp.
Description
Technical field
The present invention relates to a kind of drive circuit, more particularly, to LED daylight lamp drive circuit.
Background technology
Conventional electronic ballast is suitable for 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 the power supply driver of LED is low-voltage, high-current.
Electric ballast refers to drive electric light source using electronic technology, is allowed to produce the electronic equipment of required illumination.Therewith
Corresponding is inductance type ballast.Modern fluorescent lamp more and more using electric ballast, light compact it might even be possible to by electricity
Sub-ballast and fluorescent tube etc. integrate, and meanwhile, electric ballast generally can have starter function concurrently, so can save again
Individually starter.Electric ballast can also have more multi-functional, such as can be by improving power frequency or current wave
Shape (such as becoming square wave) is improved or is 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, now in daylight lamp holder on the market, situation is extremely complex, has the daylight lamp holder being applied to LED, that is, directly
The lamp socket of exchange 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, rashly buy back LED fluorescent lamp tube and will produce the situation a little not working or damaging.
Content of the invention
Technical problem underlying to be solved by this invention is to provide a kind of drive circuit of LED daylight lamp, being capable of compatible electricity
The situation that sub-ballast, Inductive ballast and alternating current directly input, so that LED daylight lamp insertion is directly by consumer
Can achieve and normally light.
In order to solve above-mentioned technical problem, the invention provides the LED daylight of compatible electronic formula, inductance type and alternating current
Lamp drive circuit is it is characterised in that include：
First current rectifying and wave filtering circuit, two input is connected with the L of LED daylight lamp, N-terminal respectively；
Second current rectifying and wave filtering circuit, two input is connected with L1, N1 terminal of LED daylight lamp respectively；
Relay switch switching circuit, two inputs, two with the first current rectifying and wave filtering circuit respectively of described relay
Output end is corresponding to be connected, two normally opened contact connections corresponding with the output end of the second current rectifying and wave filtering circuit respectively；
BUCK constant-current drive circuit, its input is connected respectively with two normally opened contacts of described relay, output end with
LED series winding connects；
Detecting voltage loop, one input is connected with N-terminal of LED daylight lamp, another input and LED daylight
The N1 terminal of lamp connects；
It is also respectively connected with a filament simulative resistance circuit between the L of described LED daylight lamp, N-terminal, between L1, N1 terminal；
When N, N1 or L of described LED daylight lamp, L1 terminal have input current simultaneously, this detecting voltage loop works is simultaneously
This filament simulative resistance circuit is controlled to work.
In a preferred embodiment：When the L of described LED daylight lamp, N-terminal incoming transport electricity, the first current rectifying and wave filtering circuit
The normally opened contact of relay is closed by the direct current of output, and direct current gives described LED after the step-down of BUCK constant-current drive circuit
Lamp statements based on collusion electricity.
In a preferred embodiment：The L terminal of described LED daylight lamp is connected with the output end of Inductive ballast, N-terminal with
Zero line connects, during L1, N1 short circuit；The normally opened contact of relay is closed by the direct current of the first current rectifying and wave filtering circuit output, direct current
Electricity is after the step-down of BUCK constant-current drive circuit to described LED statements based on collusion electricity.
In a preferred embodiment：The L terminal of described LED daylight lamp, N-terminal respectively with quick-starting direct electric ballast
Two output ends connect, the normally opened contact of relay is closed by the direct current of the first current rectifying and wave filtering circuit output, direct current warp
Act in collusion to make each other's confessions to described LED after crossing the step-down of BUCK constant-current drive circuit electric.
In a preferred embodiment：L, N, L1, N1 terminal of described LED daylight lamp respectively with pre-heating electronic ballast
Four output ends connect；The normally opened contact of relay is closed by the direct current of the first current rectifying and wave filtering circuit output, the first rectification filter
Wave circuit, the direct current of the second current rectifying and wave filtering circuit output are acted in collusion to make each other's confessions to described LED after the step-down of BUCK constant-current drive circuit
Electricity；
Described detecting voltage loop works simultaneously control the work of this filament simulative resistance circuit to complete filament simulation.
In a preferred embodiment：Described filament analog circuit includes the photo-coupler being connected in series and resistance R1.
In a preferred embodiment：Described detecting voltage loop includes diode D2, D3, D4, D5；Wherein the negative electrode of D2 connects
Connect the anode of D3, the plus earth of D2；The negative electrode of D4 connects the anode of D5, the plus earth of D4；The connection end of D21 and D3 is electricity
One input in pressure detecting loop；The connection end of D4 and D5 is another input in detecting voltage loop；
The negative electrode of D3 is connected with the colelctor electrode of a triode Q1 after being connected with the negative electrode of D5；The base stage of triode Q1 and two poles
The anode of pipe D1 connects, and emitter stage is connected with the negative electrode of D1.
Compared to prior art, technical scheme possesses following beneficial effect：
The invention provides the LED daylight lamp drive circuit of compatible electronic formula, inductance type and alternating current, it is operable with electronics
Ballast, Inductive ballast and alternating current directly input three kinds of situations.By two rectification circuits respectively to LED daylight lamp two
End input carries out rectification, and control relay switchs, single-ended electrical leakage problems when preventing from installing.Additionally, by there being pre- thermoelectron town
The detecting of stream device output voltage, completes the simulation of filament resistance, completes the compatibility to electric ballast.
Brief description
Fig. 1 is the circuit diagram of invention preferred embodiment.
Specific embodiment
Below in conjunction with accompanying drawing, technical scheme is described further.
Reference Fig. 1, the LED daylight lamp drive circuit of compatible electronic formula, inductance type and alternating current, including：
First current rectifying and wave filtering circuit, two input is connected with the L of LED daylight lamp, N-terminal respectively；
Second current rectifying and wave filtering circuit, two input is connected with L1, N1 terminal of LED daylight lamp respectively；
Relay switch switching circuit, two inputs, two with the first current rectifying and wave filtering circuit respectively of described relay
Output end is corresponding to be connected, two normally opened contact connections corresponding with the output end of the second current rectifying and wave filtering circuit respectively；
BUCK constant-current drive circuit, its input is connected respectively with two normally opened contacts of described relay, output end with
LED series winding connects；
Detecting voltage loop, one input is connected with N-terminal of LED daylight lamp, another input and LED daylight
The N1 terminal of lamp connects；
It is also respectively connected with a filament simulative resistance circuit between the L of described LED daylight lamp, N-terminal, between L1, N1 terminal；
When N, N1 or L of described LED daylight lamp, L1 terminal have input current simultaneously, this detecting voltage loop works is simultaneously
This filament simulative resistance circuit is controlled to work.
In the present embodiment, described filament analog circuit includes the photo-coupler being connected in series and resistance R1.
Described detecting voltage loop includes diode D2, D3, D4, D5；Wherein the negative electrode of D2 connects the anode of D3, the sun of D2
Pole is grounded；The negative electrode of D4 connects the anode of D5, the plus earth of D4；The connection end of D21 and D3 is of detecting voltage loop
Input；The connection end of D4 and D5 is another input in detecting voltage loop；
The negative electrode of D3 is connected with the colelctor electrode of a triode Q1 after being connected with the negative electrode of D5；The base stage of triode Q1 and two poles
The anode of pipe D1 connects, and emitter stage is connected with the negative electrode of D1.
Specific work process is analyzed as follows：
1), when the L of described LED daylight lamp, N-terminal incoming transport electricity, the direct current of the first current rectifying and wave filtering circuit output will continue
The normally opened contact closure of electrical equipment, direct current is after the step-down of BUCK constant-current drive circuit to described LED statements based on collusion electricity.Therefore, exist
When inputting as alternating current, this LED daylight lamp can normally be lighted.
2) the L terminal of described LED daylight lamp is connected with the output end of Inductive ballast, and N-terminal is connected with zero line, L1, N1
During short circuit；The normally opened contact of relay is closed by the direct current of the first current rectifying and wave filtering circuit output, and direct current is through BUCK constant current
To described LED statements based on collusion electricity after drive circuit step-down.Therefore, when LED daylight lamp accesses Inductive ballast, this LED daylight lamp
Can normally light.Now the input of circuit works in 50,60HZ exchange, and circuital current is less than the current limit of inductance relatively
Many, Inductive ballast just corresponds to a filtering device, and after DB2, C5, L2, C4 rectifying and wave-filtering, voltage is one to circuit
100th, the SIN wave voltage of 120HZ, circuit passes through resistance R5, and R6 charges to electric capacity C6, when voltage reaches setting value, controls core
Piece U1 starts working, and turns on switching tube Q1, now has electric current to pass through T1, and this electric current wherein part is powered to LED lamp bead, part
To EC1, EC2 charges, when flowing through resistance R12, when the electric current of R13 reaches setting value, control chip U1 on-off switching tube Q1, now
T1 passes through LED string and EC1, EC2, then flows back to T1 through diode D2, and when current discharge completes, control chip U1 passes through control
Switching tube Q1 conducting processed carries out next cycle, so passes through a HF switch cycle, constant current output electric current.
3) the L terminal of described LED daylight lamp, N-terminal are connected with two output ends of quick-starting direct electric ballast respectively
Connect, the normally opened contact of relay is closed by the direct current of the first current rectifying and wave filtering circuit output, and direct current drives through BUCK constant current
To described LED statements based on collusion electricity after circuit step-down.Therefore, when LED daylight lamp accesses quick-starting direct electric ballast, this LED
Fluorescent lamp can normally be lighted.After circuit passes through quick action electronic ballast, become 30- from 50,60HZ low-frequency current
The high frequency electric of 100KHZ, circuit passes through DB2, after C5, L2, C4 rectifying and wave-filtering, has essentially become the straight of a less ripple
Stream voltage, this voltage, after BUCK loop, becomes constant current output, drives LED string.
4) L, N, L1, N1 terminal of described LED daylight lamp is connected with four output ends of pre-heating electronic ballast respectively；
The normally opened contact of relay is closed by the direct current of the first current rectifying and wave filtering circuit output, the first current rectifying and wave filtering circuit, the second rectification
The direct current of filter circuit output is after the step-down of BUCK constant-current drive circuit to described LED statements based on collusion electricity；
Now described detecting voltage loop works and control this filament simulative resistance circuit work complete filament simulation.Voltage
After C3, C9 resistance-capacitance depressurization, then through D4, D5, D6, D7, C10 rectifying and wave-filtering, then through Q2, the loop of voltage regulation of D8, give
U1A, U2A, L3 power, and complete the detecting of voltage.U1A, U2A pass through corresponding U1B and U2B respectively and control simulation filament, and L3 leads to K3
Complete to drive relay.
The invention is not limited in aforesaid specific embodiment.Above-described embodiment should not be considered as limiting the model of the present invention
Enclose.Those skilled in the art, while reading and understanding aforementioned detailed description, can modify and change.Specifically
Protection domain should be defined by claims.
Claims (7)
1. the LED daylight lamp drive circuit of compatible electronic formula, inductance type and alternating current is it is characterised in that include：
First current rectifying and wave filtering circuit, two input is connected with the L of LED daylight lamp, N-terminal respectively；
Second current rectifying and wave filtering circuit, two input is connected with L1, N1 terminal of LED daylight lamp respectively；
Relay switch switching circuit, two inputs, two outputs with the first current rectifying and wave filtering circuit respectively of described relay
End is corresponding to be connected, two normally opened contact connections corresponding with the output end of the second current rectifying and wave filtering circuit respectively；
BUCK constant-current drive circuit, its input is connected respectively with two normally opened contacts of described relay, output end and LED
Series winding connects；
Detecting voltage loop, one input is connected with N-terminal of LED daylight lamp, another input and LED daylight lamp
N1 terminal connects；
It is also respectively connected with a filament simulative resistance circuit between the L of described LED daylight lamp, N-terminal, between L1, N1 terminal；
When N, N1 or L of described LED daylight lamp, L1 terminal have input current simultaneously, this detecting voltage loop works simultaneously controls
This filament simulative resistance circuit works.
2. the LED daylight lamp drive circuit of compatible electronic formula according to claim 1, inductance type and alternating current, its feature
It is：When the L of described LED daylight lamp, N-terminal incoming transport electricity, the direct current of the first current rectifying and wave filtering circuit output is by relay
Normally opened contact closure, direct current is after the step-down of BUCK constant-current drive circuit to described LED statements based on collusion electricity.
3. the LED daylight lamp drive circuit of compatible electronic formula according to claim 1, inductance type and alternating current, its feature
It is：The L terminal of described LED daylight lamp is connected with the output end of Inductive ballast, and N-terminal is connected with zero line, L1, N1 short circuit
When；The normally opened contact of relay is closed by the direct current of the first current rectifying and wave filtering circuit output, and direct current drives through BUCK constant current
To described LED statements based on collusion electricity after circuit step-down.
4. the LED daylight lamp drive circuit of compatible electronic formula according to claim 1, inductance type and alternating current, its feature
It is：The L terminal of described LED daylight lamp, N-terminal are connected with two output ends of quick-starting direct electric ballast respectively, the
The normally opened contact of relay is closed by the direct current of one current rectifying and wave filtering circuit output, and direct current drops through BUCK constant-current drive circuit
Described LED statements based on collusion electricity is given after pressure.
5. the LED daylight lamp drive circuit of compatible electronic formula according to claim 1, inductance type and alternating current, its feature
It is：L, N, L1, N1 terminal of described LED daylight lamp is connected with four output ends of pre-heating electronic ballast respectively；First
The normally opened contact of relay is closed by the direct current of current rectifying and wave filtering circuit output, the first current rectifying and wave filtering circuit, the second rectifying and wave-filtering
The direct current of circuit output is after the step-down of BUCK constant-current drive circuit to described LED statements based on collusion electricity；
Described detecting voltage loop works simultaneously control the work of this filament simulative resistance circuit to complete filament simulation.
6. the LED daylight lamp drive circuit of compatible electronic formula according to claim 1, inductance type and alternating current, its feature
It is：Described filament analog circuit includes the photo-coupler being connected in series and resistance R1.
7. the LED daylight lamp drive circuit of compatible electronic formula according to claim 1, inductance type and alternating current, its feature
It is：Described detecting voltage loop includes diode D2, D3, D4, D5；Wherein the negative electrode of D2 connects the anode of D3, the anode of D2
Ground connection；The negative electrode of D4 connects the anode of D5, the plus earth of D4；The connection end of D21 and D3 be one of detecting voltage loop defeated
Enter end；The connection end of D4 and D5 is another input in detecting voltage loop；
The negative electrode of D3 is connected with the colelctor electrode of a triode Q1 after being connected with the negative electrode of D5；The base stage of triode Q1 and diode D1
Anode connect, emitter stage is connected with the negative electrode of D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892622.9A CN106385733B (en) | 2016-10-13 | 2016-10-13 | The LED daylight lamp drive circuit of compatible electronic formula, inductance type and alternating current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892622.9A CN106385733B (en) | 2016-10-13 | 2016-10-13 | The LED daylight lamp drive circuit of compatible electronic formula, inductance type and alternating current |
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| CN106385733A true CN106385733A (en) | 2017-02-08 |
| CN106385733B CN106385733B (en) | 2018-02-27 |
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| CN206136388U (en) * | 2016-10-13 | 2017-04-26 | 厦门阳光恩耐照明有限公司 | LED sunlight lamp driving circuit of compatible electronic type, inductance type and alternating current |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102355780A (en) * | 2011-09-23 | 2012-02-15 | 浙江世明光学科技有限公司 | LED (light-emitting diode) tube and drive circuit thereof |
| CN202721866U (en) * | 2012-06-15 | 2013-02-06 | 深圳市宝瑞恒业科技有限公司 | New type driving circuit which is compatible with LED lamp tube |
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| Publication number | Publication date |
|---|---|
| CN106385733B (en) | 2018-02-27 |
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Effective date of registration: 20190327 Address after: 361000 2nd Floor, 102 Houxiang Road, Haicang District, Xiamen City, Fujian Province Patentee after: Xiamen Sunshine Lighting Technology Co., Ltd. Address before: No. 88 Houxiang Road, Xinyang Industrial Park, Haicang District, Xiamen City, Fujian Province, 361000 Patentee before: Xiamen Yankon Energetic Lighting Co., Ltd. |
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Effective date of registration: 20190823 Address after: Xinyang Industrial Park Haicang District of Xiamen City, Fujian province 361000 after Cheung Road No. 88 Patentee after: Xiamen Yankon Energetic Lighting Co., Ltd. Address before: 361000 2nd Floor, 102 Houxiang Road, Haicang District, Xiamen City, Fujian Province Patentee before: Xiamen Sunshine Lighting Technology Co., Ltd. |