CN205408242U - Anti -interference LED street lamp circuit - Google Patents
Anti -interference LED street lamp circuit Download PDFInfo
- Publication number
- CN205408242U CN205408242U CN201620208151.0U CN201620208151U CN205408242U CN 205408242 U CN205408242 U CN 205408242U CN 201620208151 U CN201620208151 U CN 201620208151U CN 205408242 U CN205408242 U CN 205408242U
- Authority
- CN
- China
- Prior art keywords
- resistance
- connects
- chip
- diode
- rectifier bridge
- 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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses an anti -interference LED street lamp circuit, including diode D5, rectifier bridge T, chip IC1 and inductance L1, the 220V alternating current is connected respectively to rectifier bridge T's port 1 and rectifier bridge T's port 3, and diode D1's positive pole, diode D5's negative pole, electric capacity C2, resistance R3 and chip IC1's pin 1 is connected to rectifier bridge T's port 2, electric capacity C2's other end connecting resistance R1, resistance R4 and rectifier bridge T's port 4, and inductance L1 is connected to diode D1's negative pole. The utility model discloses anti -interference LED street lamp circuit simple structure, components and parts are few, adopt LED to adjust luminance the chip as master element, its stabilization of output to consequently having left out the transformer structure, having reduced the interference of circuit, it is light -operated to combine light -sensitive element to carry on simultaneously, has that the function is various, interference immunity strong and the advantage of stable performance.
Description
Technical field
This utility model relates to a kind of lighting circuit, specifically a kind of anti-interference LED street lamp circuit.
Background technology
LED is acknowledged as the forth generation light source of green, is a kind of solid cold light source, has the plurality of advantages such as efficient, life-span length, safety and environmental protection, volume little, high reliability, fast response time.Reach same illuminating effect at present, the power consumption of LED is about the 1/10 of electric filament lamp, the 1/2 of fluorescent lamp, LED power circuit is most important for LED, especially for use on the street lamp of public construction, major part LED lamp still uses common power supply to power at present, its volume is big, and structure is complicated, and most of street lamp uses light-sensitive element to control switch, its anti-interference is poor, it is easy to be subject to harmonic wave interference.Existing street lamp there is also function singleness, service life short shortcoming simultaneously.
Utility model content
The purpose of this utility model is in that to provide the anti-interference LED street lamp circuit of a kind of simple in construction, stable performance, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
nullA kind of anti-interference LED street lamp circuit，Including diode D5、Rectifier bridge T、Chip IC 1 and inductance L1，The port 1 of described rectifier bridge T and the port 3 of rectifier bridge T connect 220V alternating current respectively，The port 2 of rectifier bridge T connects the anode of diode D1、The negative electrode of diode D5、Electric capacity C2、The pin 1 of resistance R3 and chip IC 1，The other end of electric capacity C2 connects resistance R1、The port 4 of resistance R4 and rectifier bridge T，The negative electrode of diode D1 connects inductance L1，The other end of inductance L1 connects the drain electrode of electric capacity C1 and metal-oxide-semiconductor Q1，The other end of electric capacity C1 connects the negative electrode of diode D2 and the anode of diode D5，The anode of diode D2 connects anode and the inductance L2 of diode D4，The other end of inductance L2 connects LED H，The negative electrode of diode D4 connects the other end of resistance R4、Resistance R6、Electric capacity C3、The source electrode of metal-oxide-semiconductor Q1 and the pin 5 of chip IC 1，The other end of resistance R3 connects the pin 6 of chip IC 1，The other end of resistance R1 connects the pin 8 of resistance R2 and chip IC 1，The other end of resistance R2 connects the other end of electric capacity C3、The pin 4 of resistance R8 and chip IC 1，The grid of metal-oxide-semiconductor Q1 connects the pin 2 of resistance R5 and chip IC 1，The pin 7 of chip IC 1 connects the other end of resistance R5，The other end of LED lamp H connects the other end and the resistance R7 of resistance R6，The other end of resistance R7 connects the other end of resistance R8 and the pin 3 of chip IC 1，The model of described chip IC 1 is HV9931.
As preferred version of the present utility model: described resistance R3 is photoconductive resistance.
Compared with prior art, the beneficial effects of the utility model are: this utility model anti-interference LED street lamp circuit simple in construction, components and parts are few, LED is adopted to dim chip as master element, its output voltage stabilization, and eliminate transformer device structure, decrease the interference of circuit, carry out light-operated in combination with light-sensitive element, the advantage therefore with diverse in function, strong interference immunity and stable performance.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of anti-interference LED street lamp circuit；
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，In this utility model embodiment，A kind of anti-interference LED street lamp circuit，Including diode D5、Rectifier bridge T、Chip IC 1 and inductance L1，The port 1 of described rectifier bridge T and the port 3 of rectifier bridge T connect 220V alternating current respectively，The port 2 of rectifier bridge T connects the anode of diode D1、The negative electrode of diode D5、Electric capacity C2、The pin 1 of resistance R3 and chip IC 1，The other end of electric capacity C2 connects resistance R1、The port 4 of resistance R4 and rectifier bridge T，The negative electrode of diode D1 connects inductance L1，The other end of inductance L1 connects the drain electrode of electric capacity C1 and metal-oxide-semiconductor Q1，The other end of electric capacity C1 connects the negative electrode of diode D2 and the anode of diode D5，The anode of diode D2 connects anode and the inductance L2 of diode D4，The other end of inductance L2 connects LED H，The negative electrode of diode D4 connects the other end of resistance R4、Resistance R6、Electric capacity C3、The source electrode of metal-oxide-semiconductor Q1 and the pin 5 of chip IC 1，The other end of resistance R3 connects the pin 6 of chip IC 1，The other end of resistance R1 connects the pin 8 of resistance R2 and chip IC 1，The other end of resistance R2 connects the other end of electric capacity C3、The pin 4 of resistance R8 and chip IC 1，The grid of metal-oxide-semiconductor Q1 connects the pin 2 of resistance R5 and chip IC 1，The pin 7 of chip IC 1 connects the other end of resistance R5，The other end of LED lamp H connects the other end and the resistance R7 of resistance R6，The other end of resistance R7 connects the other end of resistance R8 and the pin 3 of chip IC 1，The model of described chip IC 1 is HV9931.
Resistance R3 is photoconductive resistance.
Operation principle of the present utility model is: in circuit, and the Buck-Boost circuit being made up of L1, C1, D1, D5 and Q1 is input stage, works in discontinuous conduction mode；It is made up of C1, Q1, D2, D4 and L2 and is operated under continuous conduction mode.Two-stage shares a power switch pipe Q1, and input stage is equivalent to load by electric capacity C1, and output stage is equivalent to DC source.System step-down ratio is the product of two-stage step-down ratio, so need not be can be achieved with relatively low voltage output by transformator by mains-supplied.Inductance L1 and electric capacity C2 forms wave filter simultaneously, can also the effectively interference of the harmonic wave in suppression circuit, during switch Q1 conducting, input stage Buck-Boos current path: commutating voltage → D1 → L1 → Q1 → R4, in L1, electric current is linearly increasing, and output stage Buck circuital current path is:
C1 → Q1 → R6 → H → L2, C1 provides energy；When Q1 turns off, the energy in input stage current path: L1 → C1 → D5 → D1, L1 forwards in C1, and owing to D1 exists, L1 electric current can not be reverse, and it is interrupted that L1 electric current reduces to 0 after current；Output stage current path: L2 → D4 → LED.
Circuit works under peak-current mode, and agitator makes 2 foot output high level of chip IC 1, makes Q1 turn on；3 feet of chip IC 1 and 8 feet are the reverse input end of its two internal voltage comparators respectively, the input in the same direction of two comparators is chip internal ground connection, circuit detects input current and output electric current by 3 feet and 8 feet simultaneously, 8 feet are input current signal detection terminals, 3 foot output current signal detection terminals, as long as the two terminal is with having the voltage ratio on a terminal low, 2 feet are with regard to output low level, and Q1 just turns off.
C2 is input capacitance, and as high frequency bypass, R5 correspond to internal oscillator, has two kinds of connections, sets constant operation frequency and constant turn-off time respectively.Resistance R3 is photoconductive resistance, its resistance changes with light intensity, thus giving 6 foot conveying dim signals of chip IC 1,6 feet are dim signal input pin, normal circuit operation when this pin is low level, 2 pins output low level all the time when this pin is high level, switching tube Q1 turns off, drive circuit does not work, thus reaching light-operated purpose.
Claims (2)
- null1. an anti-interference LED street lamp circuit，Including diode D5、Rectifier bridge T、Chip IC 1 and inductance L1，It is characterized in that，The port 1 of described rectifier bridge T and the port 3 of rectifier bridge T connect 220V alternating current respectively，The port 2 of rectifier bridge T connects the anode of diode D1、The negative electrode of diode D5、Electric capacity C2、The pin 1 of resistance R3 and chip IC 1，The other end of electric capacity C2 connects resistance R1、The port 4 of resistance R4 and rectifier bridge T，The negative electrode of diode D1 connects inductance L1，The other end of inductance L1 connects the drain electrode of electric capacity C1 and metal-oxide-semiconductor Q1，The other end of electric capacity C1 connects the negative electrode of diode D2 and the anode of diode D5，The anode of diode D2 connects anode and the inductance L2 of diode D4，The other end of inductance L2 connects LED H，The negative electrode of diode D4 connects the other end of resistance R4、Resistance R6、Electric capacity C3、The source electrode of metal-oxide-semiconductor Q1 and the pin 5 of chip IC 1，The other end of resistance R3 connects the pin 6 of chip IC 1，The other end of resistance R1 connects the pin 8 of resistance R2 and chip IC 1，The other end of resistance R2 connects the other end of electric capacity C3、The pin 4 of resistance R8 and chip IC 1，The grid of metal-oxide-semiconductor Q1 connects the pin 2 of resistance R5 and chip IC 1，The pin 7 of chip IC 1 connects the other end of resistance R5，The other end of LED lamp H connects the other end and the resistance R7 of resistance R6，The other end of resistance R7 connects the other end of resistance R8 and the pin 3 of chip IC 1，The model of described chip IC 1 is HV9931.
- 2. anti-interference LED street lamp circuit according to claim 1, it is characterised in that described resistance R3 is photoconductive resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620208151.0U CN205408242U (en) | 2016-03-09 | 2016-03-09 | Anti -interference LED street lamp circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620208151.0U CN205408242U (en) | 2016-03-09 | 2016-03-09 | Anti -interference LED street lamp circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205408242U true CN205408242U (en) | 2016-07-27 |
Family
ID=56423374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620208151.0U Expired - Fee Related CN205408242U (en) | 2016-03-09 | 2016-03-09 | Anti -interference LED street lamp circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205408242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828472A (en) * | 2016-03-09 | 2016-08-03 | 刘云海 | Anti-interference LED street lamp circuit |
-
2016
- 2016-03-09 CN CN201620208151.0U patent/CN205408242U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828472A (en) * | 2016-03-09 | 2016-08-03 | 刘云海 | Anti-interference LED street lamp circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101835317B (en) | Fly-back street lamp illumination LED constant-current driving power supply with intelligent dimming function | |
| CN101977475B (en) | LED constant current control device in PWM dimming mode | |
| CN101827488B (en) | Fluorescent lamp electronic ballast and lighting device | |
| CN205408228U (en) | LED stroboscopic lamp controller | |
| CN201813590U (en) | Driving power supply of light-emitting diode | |
| CN204465970U (en) | A kind of LED street lamp drive circuit based on HV9931 | |
| TWI448205B (en) | Single stage electronic ballast with power factor correction | |
| CN204518177U (en) | A kind of LED drive power circuit | |
| CN105828472A (en) | Anti-interference LED street lamp circuit | |
| CN202972844U (en) | Ceiling lamp capable of switching brightness levels automatically | |
| CN205408242U (en) | Anti -interference LED street lamp circuit | |
| CN201150035Y (en) | Resistance-capacitance step-down power supply circuit with zero crossing detection function | |
| CN205648097U (en) | Dual supply touches LED lamp of adjusting luminance | |
| CN204145795U (en) | Have APFC function without working frequency ripple wave LED streetlamp power source | |
| CN1967992B (en) | A buffer switching power supply | |
| CN202565166U (en) | Fly-back converter control constant current output circuit | |
| CN104735837A (en) | LED street lamp power supply without power frequency ripples and with APFC function | |
| US10805996B1 (en) | Dial segmented dimming circuit | |
| CN204465952U (en) | A kind of LED energy-saving circuit based on MSP430 | |
| CN210807746U (en) | LED circuit with silicon controlled rectifier dimming and switch segmented switching | |
| CN202679708U (en) | LED (light emitting diode) driving circuit | |
| CN206865788U (en) | A kind of circuit of corridor light of energy saving | |
| CN104768282A (en) | LED drive control circuit for switch dimming | |
| CN205847668U (en) | A kind of linear light-adjustable LED lamp | |
| CN204291498U (en) | A kind of isolated form LED drive circuit based on transformer |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20170309 |