CN206490864U - LED illumination circuit - Google Patents
LED illumination circuit Download PDFInfo
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- CN206490864U CN206490864U CN201720121293.8U CN201720121293U CN206490864U CN 206490864 U CN206490864 U CN 206490864U CN 201720121293 U CN201720121293 U CN 201720121293U CN 206490864 U CN206490864 U CN 206490864U
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- resistance
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- stablizer
- voltage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a kind of LED illumination circuit, including transformer, bridge rectifier, relay, three ends can align voltage-stablizer, operational amplifier, LED, first electric capacity, second electric capacity, potentiometer, first resistor, second resistance, 3rd resistor, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, first diode, second diode, 3rd diode and the 4th diode, one end of one secondary coil of transformer and an input of bridge rectifier are connected, one end of not another secondary coil of moved end and transformer of the second of the other end of one secondary coil of transformer and the contact of relay is connected, the other end of another secondary coil of transformer and the first not moved end connection of the contact of relay, the 3rd of the contact of relay not moved end and bridge rectifier another input connection.The utility model has circuit protection function, higher using safer, stability.
Description
Technical field
The utility model is related to lighting field, more particularly to a kind of LED illumination circuit.
Background technology
LED is acknowledged as the forth generation light source of green, is a kind of solid cold light source, with efficient, long lifespan, safety collar
Many advantages, such as guarantor, small volume, high reliability, fast response time.Same illuminating effect is reached at present, and LED power consumption is big
It is approximately the 1/10 of incandescent lamp, the 1/2 of fluorescent lamp, LED power circuit is most important for LED.Current major part LED lamp is still
So powered using common power supply, its stability is poor, be easily caused overvoltage, excessively stream, it is under-voltage the problems such as, so as to burn LED
Light fixture.However, existing LED power circuit is big most without circuit protection function, cause using there is potential safety hazard.
Utility model content
The technical problems to be solved in the utility model is, for prior art it is above-mentioned without circuit protection function,
There is circuit protection function, using safer, stably using there is potential safety hazard, the defect of less stable there is provided one kind
The higher LED illumination circuit of property.
The utility model solves the technical scheme that its technical problem used：A kind of LED illumination circuit is constructed, including is become
Depressor, bridge rectifier, relay, three ends can align voltage-stablizer, operational amplifier, LED, the first electric capacity, the second electric capacity, electricity
Position device, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance,
First diode, the second diode, the 3rd diode and the 4th diode, the two ends of the primary coil of the transformer connect respectively
Connect the two ends of 220V alternating currents, one end of a secondary coil of the transformer and an input of the bridge rectifier
Connection, the second not moved end and transformation of the other end of a secondary coil of the transformer and the contact of the relay
One end connection of another secondary coil of device, the other end of another secondary coil of the transformer and the relay
Moved end is not connected the first of contact, another input of the 3rd not moved end and the bridge rectifier of the contact of the relay
Connection a, output end of the bridge rectifier passes through the 8th resistance negative electrode respectively with second diode, first
The negative electrode of diode, the negative electrode of the 3rd diode, one end of the second electric capacity, three ends can align the first pin connection of voltage-stablizer,
The anode of second diode is connected with one end of first electric capacity and one end of relay respectively, the bridge rectifier
Another output end by the 7th resistance respectively with the other end of first electric capacity, the other end of relay, the two or two
The other end connection of the anode of pole pipe and the second electric capacity, three end can align the 3rd pin of voltage-stablizer respectively with the described 3rd
The anode of diode, one end of second resistance, one end connection of one end of the 6th resistance and LED, three end can be aligned surely
The second pin of depressor connects with one end of a fixing end of the potentiometer, the other end of second resistance and 3rd resistor respectively
Connect, the sliding end of the potentiometer is connected with another fixing end of the potentiometer, another fixing end difference of the potentiometer
The other end, one end of the 4th resistance, one end of the 5th resistance, the anode of the 4th diode and computing with the 3rd resistor are put
The 3rd pin connection of big device, the negative electrode of the 4th diode is connected with the 4th pin of the operational amplifier, and described the
The other end of four resistance is connected with the other end of second electric capacity, the other end of the 5th resistance and the 6th resistance it is another
End is connected with the first pin of the operational amplifier, and the other end of the other end of the LED and the 4th resistance connects
Connect.
In LED illumination circuit described in the utility model, in addition to the 9th resistance, one end of the 9th resistance and institute
The negative electrode connection of the first diode is stated, the other end and three end of the 9th resistance can align the first pin company of voltage-stablizer
Connect.
In LED illumination circuit described in the utility model, in addition to the tenth resistance, one end of the tenth resistance and institute
The first pin connection of voltage-stablizer can be aligned by stating three ends, and the other end of the tenth resistance connects with one end of second electric capacity
Connect.
In LED illumination circuit described in the utility model, in addition to the 11st resistance, three end can align voltage-stablizer
Second pin be connected by the 11st resistance with the other end of the second resistance.
In LED illumination circuit described in the utility model, in addition to the 12nd resistance, three end can align voltage-stablizer
The 3rd pin be connected by the 12nd resistance with one end of the 6th resistance.
In LED illumination circuit described in the utility model, in addition to the 13rd resistance, the 3rd of the operational amplifier the
Pin is connected by the 13rd resistance with the negative electrode of the 4th diode.
In LED illumination circuit described in the utility model, in addition to the 14th resistance, the other end of the LED leads to
The 14th resistance is crossed to be connected with the other end of the 4th resistance.
Implement LED illumination circuit of the present utility model, have the advantages that：Due to transformer, bridge rectifier, after
Electrical equipment, three ends can align voltage-stablizer, operational amplifier, LED, the first electric capacity, the second electric capacity, potentiometer, first resistor, second
Resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the first diode, the two or two
Pole pipe, the 3rd diode and the 4th diode, the 7th resistance and the 8th resistance are used to carry out overcurrent protection, therefore it has circuit
It is defencive function, higher using safer, stability.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams in the utility model LED illumination circuit one embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
In the utility model LED illumination circuit embodiments, the structural representation of the LED illumination circuit is as shown in Figure 1.Figure
In 1, the LED illumination circuit can align voltage-stablizer IC1, operation amplifier including transformer W, bridge rectifier T, relay J, three ends
Device IC2, LED H, the first electric capacity C1, the second electric capacity C2, potentiometer RP1, first resistor R1, second resistance R2,3rd resistor
R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the first diode D1, the two or two
Pole pipe D2, the 3rd diode D3 and the 4th diode D4.
Wherein, transformer W primary coil N1 two ends connect the two ends of 220V alternating currents, one of transformer W respectively
Secondary coil N2 one end is connected with a bridge rectifier T input, the transformer W secondary coil N2 other end
It is connected with the second of relay J contact J-1 the not moved end 2 and transformer W another secondary coil N3 one end, transformer W
Another secondary coil N3 the other end and relay J contact J-1 first not moved end 1 be connected, relay J contact J-
Moved end 3 is not connected the 3rd of 1 with bridge rectifier T another input.
In the present embodiment, the moon of a bridge rectifier T output end by the 8th resistance R8 respectively with the second diode D2
Pole, the first diode D1 negative electrode, the 3rd diode D3 negative electrode, the second electric capacity C2 one end, three ends can align voltage-stablizer IC1
The connection of the first pin, the second diode D2 anode is connected with the first electric capacity C1 one end and relay J one end respectively, bridge
Formula rectifier T another output end by the 7th resistance R7 respectively with the first electric capacity C1 other end, the relay J other end,
Second diode D2 anode and the second electric capacity C2 other end connection, three ends can align voltage-stablizer IC1 the 3rd pin difference
It is connected with the 3rd diode D3 anode, second resistance R2 one end, the 6th resistance R6 one end and LED H one end, three ends
The second pin that voltage-stablizer IC1 can be aligned is electric with a potentiometer RP1 fixing end, the second resistance R2 other end and the 3rd respectively
R3 one end connection is hindered, potentiometer RP1 sliding end is connected with potentiometer RP1 another fixing end, and potentiometer RP1's is another solid
The other end, the 4th resistance R4 one end, the 5th resistance R5 one end, the 4th diode D4 sun of fixed end respectively with 3rd resistor R3
Pole and operational amplifier IC2 the 3rd pin connection, the 4th diode D4 negative electrode connect with operational amplifier IC2 the 4th pin
Connect, the 4th resistance R4 other end is connected with the second electric capacity C2 other end, the 5th resistance the R5 other end and the 6th resistance R6
The other end be connected with operational amplifier IC2 the first pin, the LED H other end and the 4th resistance R4 other end connects
Connect.
7th resistance R7 and the 8th resistance R8 is current-limiting resistance, and the 7th resistance R7 is used for the another of bridge rectifier T
Branch road between input and the first electric capacity C1 other end carries out overcurrent protection, and the 8th resistance R8 is used for bridge rectifier T
An input and the second diode D2 negative electrode between branch road carry out overcurrent protection.Therefore its have circuit protection function,
It is higher using safer, stability.
In the present embodiment, the LED illumination circuit also includes the 9th resistance R9, the 9th resistance R9 one end and the first diode
D1 negative electrode connection, the first pin that the 9th resistance the R9 other end and three ends can align voltage-stablizer IC1 is connected.9th resistance R9
For current-limiting resistance, the branch road between the first pin for that can align voltage-stablizer IC1 to the first diode D1 and three ends was carried out
Stream protection, further to improve the security of circuit.
In the present embodiment, the LED illumination circuit also includes the tenth resistance R10, and the tenth resistance R10 one end and three ends is adjustable
Positive voltage-stablizer IC1 the first pin connection, the tenth resistance R10 other end is connected with the second electric capacity C2 one end.Tenth resistance
R10 is current-limiting resistance, and the branch road between the first pin for that can align voltage-stablizer IC1 to the second electric capacity C2 and three ends was carried out
Stream protection, further to improve the security of circuit.
In the present embodiment, the LED illumination circuit also includes the 11st resistance R11, and three ends can align the second of voltage-stablizer IC1
Pin is connected by the 11st resistance R11 with the second resistance R2 other end.11st resistance R11 be current-limiting resistance, for pair
The branch road that three ends can be aligned between voltage-stablizer IC1 second pin and the 3rd pin carries out overcurrent protection.
In the present embodiment, the LED illumination circuit also includes the 12nd resistance R12, and three ends can align the 3rd of voltage-stablizer IC1
Pin is connected by the 12nd resistance R12 with the 6th resistance R6 one end.12nd resistance R12 is current-limiting resistance, for three
The branch road that end can be aligned between voltage-stablizer IC1 the 3rd pin and LED H carries out overcurrent protection.
In the present embodiment, the LED illumination circuit also includes the 13rd resistance R13, and operational amplifier IC2 the 3rd pin leads to
The 13rd resistance R13 is crossed to be connected with the 4th diode D4 negative electrode.13rd resistance R13 is current-limiting resistance, for being put to computing
Branch road between big device IC2 the 3rd pin and the 4th pin carries out overcurrent protection.
In the present embodiment, the LED illumination circuit also includes the 14th resistance R14, and the LED H other end passes through the 14th
Resistance R14 is connected with the 4th resistance R4 other end.14th resistance R14 is current-limiting resistance, for the line where LED H
Road carries out overcurrent protection.
In a word, in the present embodiment, due to that provided with current-limiting resistance, can carry out overcurrent protection, therefore it has circuit guarantor
It is protective function, higher using safer, stability.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (7)
1. a kind of LED illumination circuit, it is characterised in that can align voltage stabilizing including transformer, bridge rectifier, relay, three ends
Device, operational amplifier, LED, the first electric capacity, the second electric capacity, potentiometer, first resistor, second resistance, 3rd resistor, the 4th
Resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the first diode, the second diode, the 3rd diode and
Four diodes, the two ends of the primary coil of the transformer connect the two ends of 220V alternating currents, one of the transformer respectively
One end of secondary coil is connected with an input of the bridge rectifier, a secondary coil of the transformer it is another
End is connected with one end of the second of the contact of the relay not another secondary coil of moved end and the transformer, the change
Moved end is not connected the first of the other end of another secondary coil of depressor and the contact of the relay, and the relay is touched
Moved end is not connected the 3rd of point with another input of the bridge rectifier, and an output end of the bridge rectifier passes through institute
State the 8th resistance respectively with the negative electrode of second diode, the negative electrode of the first diode, the negative electrode of the 3rd diode, second electricity
One end of appearance, three ends can align the first pin connection of voltage-stablizer, and the anode of second diode is electric with described first respectively
One end of appearance and the connection of one end of relay, another output end of the bridge rectifier by the 7th resistance respectively with institute
The other end connection of the other end, the other end of relay, the anode of the second diode and the second electric capacity of the first electric capacity is stated, it is described
Three ends can align anode, one end of second resistance, the 6th resistance of the 3rd pin of voltage-stablizer respectively with the 3rd diode
One end and LED one end connection, three end can align the second pin of voltage-stablizer and consolidate respectively with the one of the potentiometer
One end connection of fixed end, the other end of second resistance and 3rd resistor, the sliding end of the potentiometer is another with the potentiometer
One fixing end is connected, another fixing end of potentiometer other end respectively with the 3rd resistor, one end of the 4th resistance,
The 3rd pin connection of one end of the 5th resistance, the anode of the 4th diode and operational amplifier, the moon of the 4th diode
Pole is connected with the 4th pin of the operational amplifier, and the other end of the 4th resistance connects with the other end of second electric capacity
Connect, the other end of the 5th resistance and the other end of the 6th resistance are connected with the first pin of the operational amplifier, institute
The other end for stating LED is connected with the other end of the 4th resistance.
2. LED illumination circuit according to claim 1, it is characterised in that also including the 9th resistance, the 9th resistance
One end is connected with the negative electrode of first diode, and the other end of the 9th resistance and three end can align the of voltage-stablizer
One pin is connected.
3. LED illumination circuit according to claim 2, it is characterised in that also including the tenth resistance, the tenth resistance
The first pin that one end can align voltage-stablizer with three end is connected, the other end and second electric capacity of the tenth resistance
One end is connected.
4. the LED illumination circuit according to claims 1 to 3 any one, it is characterised in that also including the 11st resistance,
The second pin that three end can align voltage-stablizer is connected by the 11st resistance with the other end of the second resistance.
5. LED illumination circuit according to claim 4, it is characterised in that also including the 12nd resistance, three end is adjustable
3rd pin of positive voltage-stablizer is connected by the 12nd resistance with one end of the 6th resistance.
6. LED illumination circuit according to claim 5, it is characterised in that also including the 13rd resistance, the operation amplifier
3rd pin of device is connected by the 13rd resistance with the negative electrode of the 4th diode.
7. LED illumination circuit according to claim 6, it is characterised in that also including the 14th resistance, the LED
The other end is connected by the 14th resistance with the other end of the 4th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720121293.8U CN206490864U (en) | 2017-02-09 | 2017-02-09 | LED illumination circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720121293.8U CN206490864U (en) | 2017-02-09 | 2017-02-09 | LED illumination circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206490864U true CN206490864U (en) | 2017-09-12 |
Family
ID=59763844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720121293.8U Withdrawn - After Issue CN206490864U (en) | 2017-02-09 | 2017-02-09 | LED illumination circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206490864U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106714388A (en) * | 2017-02-09 | 2017-05-24 | 中山自信照明科技有限公司 | LED (Light Emitting Diode) illumination circuit |
-
2017
- 2017-02-09 CN CN201720121293.8U patent/CN206490864U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106714388A (en) * | 2017-02-09 | 2017-05-24 | 中山自信照明科技有限公司 | LED (Light Emitting Diode) illumination circuit |
| CN106714388B (en) * | 2017-02-09 | 2018-06-26 | 中山自信照明科技有限公司 | LED illumination circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170912 Effective date of abandoning: 20180626 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170912 Effective date of abandoning: 20180626 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |