CN203884020U - Signal transmitting and receiving circuit for use in LED driver - Google Patents
Signal transmitting and receiving circuit for use in LED driver Download PDFInfo
- Publication number
- CN203884020U CN203884020U CN201320857402.4U CN201320857402U CN203884020U CN 203884020 U CN203884020 U CN 203884020U CN 201320857402 U CN201320857402 U CN 201320857402U CN 203884020 U CN203884020 U CN 203884020U
- Authority
- CN
- China
- Prior art keywords
- pin
- resistance
- photoelectrical coupler
- receiving circuit
- signal transmitting
- 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
Abstract
The utility model discloses a signal transmitting and receiving circuit for use in an LED driver. The signal transmitting and receiving circuit comprises a bridge rectifier D1, an optoelectronic coupler U1, an optoelectronic coupler U2, and a power end. Voltage of the power end is 3.3V. A pin 1 and a pin 2 of the bridge rectifier D1 are connected with an input interface, and a pin 3 and a pin 4 of the bridge rectifier D1 are connected with a pin 1 and a pin 2 of the optoelectronic coupler U1. A pin 3 of the optoelectronic coupler U1 is grounded, and a pin 4 of the optoelectronic coupler U1 is connected with the power end. A pin 1 and a pin 2 of the optoelectronic coupler U2 are connected with the power end. A resistor R6 is arranged between the pin 1 of the optoelectronic coupler U2 and the power end. A pin 3 and a pin 4 of the optoelectronic coupler U2 are connected with the pin 3 and the pin 4 of the bridge rectifier D1 respectively. With the abovementioned structure, stable signals can be obtained, thereby achieving brightness control of LED lamps.
Description
Technical field
The utility model relates to LED and drives field, specifically for the signal transmitting and receiving circuit of LED driver.
Background technology
The LED develop rapidly of throwing light on, the whole nation even whole world is all promoting, long because LED has the life-span, radiationless, the advantages such as easy control, alternative conventional light source progressively.Because LED is the semiconductor device of characteristic sensitivity, there is again negative temperature characteristic, thereby in application process, need it to carry out steady-working state and protection, thereby produced the concept driving.LED device is to the requirement of driving power near harshness, and LED, unlike common incandescent lamp bulb, can directly connect the electric main of 220V, and LED is the low voltage drive of 2 ~ 3 volts, must design complicated translation circuit.
SunforBus system comprises host computer, gateway, slave, remote controller, host computer is the equipment such as PC based on WINDOWS platform, ANDROID platform or ios platform, panel computer, mobile phone, by Ethernet and gateway communication, gateway is communicated by letter with slave by DALI, to reach LED brightness regulation; Gateway Main Function is processing and the forwarding of signal; Remote controller can be by RF433 and gateway communication, also can be by RF433 and slave direct communication.Due to LED driver can with SunforBus system compatible, therefore, available remote controller is realized communication, for the brightness of LED light fixture is regulated, and lacks at present the metastable signal transmitting and receiving circuit of transmitting-receiving and realize brilliance control, the adjusting of LED light fixture.
Utility model content
The utility model provides the signal transmitting and receiving circuit for LED driver, has solved current LED driver and has lacked good signal transmitting and receiving circuit, causes the affected problem of brightness regulation of LED lamp.
The purpose of this utility model is achieved through the following technical solutions: for the signal transmitting and receiving circuit of LED driver, comprise rectifier bridge stack D1, photoelectrical coupler U1, photoelectrical coupler U2, input/output interface J1, power end, the voltage of described power end is 3.3V;
Described rectifier bridge stack D1 comprises four pins, wherein pin 1, pin 2 are direct current input, pin 3, pin 4 are respectively anodal output, negative pole output, described photoelectrical coupler U1 comprises four pins, pin 1, pin 2 are input, and pin 3, pin 4 are output, and described photoelectrical coupler U2 comprises four pins, pin 1, pin 2 are input, and pin 3, pin 4 are output;
Pin 1, the pin 2 of described rectifier bridge stack D1 connect input/output interface J1, and pin 3, the pin 4 of rectifier bridge stack D1 are connected with pin 1, the pin 2 of photoelectrical coupler U1;
Pin 3 ground connection of described photoelectrical coupler U1, pin 4 connects resistance R in parallel 2, resistance R 3, the other end of resistance R 2 connects power end, the other end of resistance R 3 connects negative level output CMP1-, described power end is also connected with resistance R 4, the resistance R 5 of series connection, the other end ground connection of resistance R 5, is connected positive level output CMP1+ between resistance R 4 and resistance R 5;
The pin 1 of described photoelectrical coupler U2 is connected with power end, pin 2 is connected with signal receiving end DALI, between the pin 1 of photoelectrical coupler U2 and power end, be connected with resistance R 6, pin 3, the pin 4 of photoelectrical coupler U2 are connected with pin 4, the pin 3 of rectifier bridge stack D1 respectively.
Further, between the pin 1 of described photoelectrical coupler U1 and the pin 3 of rectifier bridge stack D1, be connected with resistance R 1.
Further, the resistance of described resistance R 1 is 8 ~ 8.5K Ω.
Further, between the pin 2 of described photoelectrical coupler U2 and power end, be connected with resistance R 7.
Further, between the pin 3 of described photoelectrical coupler U2 and pin 4, be connected with triode Q1, resistance R 8, the base stage of triode Q1 is connected with the pin 3 of photoelectrical coupler U2, collector electrode is connected with the pin 4 of photoelectrical coupler U2, and the two ends of resistance R 8 are connected with the base stage of triode Q1, the pin 3 of photoelectrical coupler U2 respectively.
Further, between the emitter of described triode Q1 and the pin 3 of photoelectrical coupler U2, be connected with resistance R 9.
Further, the resistance of described resistance R 9 is 47K Ω.
Further, the model of described triode Q1 is FMMT491A.
Further, the model of described rectifier bridge stack D1 is MB2S.
Further, the model that described photoelectrical coupler U1, photoelectrical coupler U2 adopt is TLP181.
The utlity model has following beneficial effect: the utility model is isolated signal by two photoelectrical couplers are set, and meanwhile, by rectifier bridge stack, signal is carried out to rectification, thereby obtains stable signal, is conducive to control better the brightness of LED lamp.
Brief description of the drawings
Fig. 1 is the electrical block diagram of embodiment 1 of the present utility model;
Fig. 2 is the electrical block diagram of embodiment 2 of the present utility model;
Fig. 3 is the electrical block diagram of embodiment 3 of the present utility model;
Fig. 4 is the electrical block diagram of embodiment 4 of the present utility model.
embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited only to this.
Embodiment 1:
As shown in Figure 1, the signal transmitting and receiving circuit for LED driver described in the present embodiment, comprises rectifier bridge stack D1, photoelectrical coupler U1, photoelectrical coupler U2, input/output interface J1, power end, and the voltage of power end is 3.3V.
The rectifier bridge stack D1 of the present embodiment comprises four pins, wherein pin 1, pin 2 are direct current input, pin 3, pin 4 are respectively anodal output, negative pole output, described photoelectrical coupler U1 comprises four pins, pin 1, pin 2 are input, and pin 3, pin 4 are output, and described photoelectrical coupler U2 comprises four pins, pin 1, pin 2 are input, and pin 3, pin 4 are output.
Pin 1, the pin 2 of the rectifier bridge stack D1 of the present embodiment connect input/output interface J1, and pin 3, the pin 4 of rectifier bridge stack D1 are connected with pin 1, the pin 2 of photoelectrical coupler U1.
Pin 3 ground connection of the photoelectrical coupler U1 of the present embodiment, pin 4 connects resistance R in parallel 2, resistance R 3, the other end of resistance R 2 connects power end, the other end of resistance R 3 connects negative level output CMP1-, described power end is also connected with resistance R 4, the resistance R 5 of series connection, the other end ground connection of resistance R 5, is connected positive level output CMP1+ between resistance R 4 and resistance R 5; Resistance R 2 is as pull-up resistor, and in the time not having signal to send, the pin 4 of photoelectrical coupler U1 keeps high level; Resistance R 3 is as current-limiting resistance, for controlling the signal output of pin 4 of photoelectrical coupler U1; Resistance R 4, resistance R 5 are divider resistance.
The pin 1 of the photoelectrical coupler U2 of the present embodiment is connected with power end, pin 2 is connected with signal receiving end DALI, between the pin 1 of photoelectrical coupler U2 and power end, be connected with resistance R 6, resistance R 6 is pull-up resistor, and pin 3, the pin 4 of photoelectrical coupler U2 are connected with pin 4, the pin 3 of rectifier bridge stack D1 respectively.
As preferably, the model of the rectifier bridge stack D1 of the present embodiment is MB2S, and the model that photoelectrical coupler U1, photoelectrical coupler U2 adopt is TLP181.
The operation principle of the present embodiment: when signal enters from the pin 1,2 of rectifier bridge stack D1, from pin 3,4 outputs of rectifier bridge stack D1, and enter by the pin 1,2 of photoelectrical coupler U1, when after pin 1,2 conductings of photoelectrical coupler U1, pin 3, the 4 also conductings of photoelectrical coupler U1, pin 4 output low levels of photoelectrical coupler U1, and in the time that the pin 1,2 of photoelectrical coupler U1 ends, the pin 4 of photoelectrical coupler U1 is exported high level; In addition, in the time that signal receiving end DALI is high level, photoelectrical coupler U2 cut-off, the pin 3,4 of rectifier bridge stack D1 is high level, in the time that signal receiving end DALI is low level, photoelectrical coupler U2 conducting, the pin 3,4 of rectifier bridge stack D1 is low level.
Embodiment 2:
As shown in Figure 2, the present embodiment is substantially the same manner as Example 1, and different places are to be connected with resistance R 1 between the pin 1 of the photoelectrical coupler U1 of the present embodiment and the pin 3 of rectifier bridge stack D1.
As preferably, the resistance of the resistance R 1 of the present embodiment is 8 ~ 8.5K Ω.
As preferably, between the pin 2 of the photoelectrical coupler U2 of the present embodiment and power end, be connected with resistance R 7.
Embodiment 3:
As shown in Figure 3, the present embodiment is substantially the same manner as Example 2, different places are, between the pin 3 of the described photoelectrical coupler U2 of the present embodiment and pin 4, be connected with triode Q1, resistance R 8, the base stage of triode Q1 is connected with the pin 3 of photoelectrical coupler U2, collector electrode is connected with the pin 4 of photoelectrical coupler U2, and the two ends of resistance R 8 are connected with the base stage of triode Q1, the pin 3 of photoelectrical coupler U2 respectively.
Embodiment 4:
As shown in Figure 4, the present embodiment is substantially the same manner as Example 3, and different places are to be connected with resistance R 9 between the emitter of the triode Q1 of the present embodiment and the pin 3 of photoelectrical coupler U2.
As preferably, the resistance of the resistance R 9 of the present embodiment is 47K Ω.
As preferably, the model of the triode Q1 of the present embodiment is FMMT491A.
The utility model is illustrated by above-described embodiment, but should be understood that, above-described embodiment is the object for giving an example and illustrating just, but not is intended to the utility model to be limited in described scope of embodiments.In addition; it will be understood by those skilled in the art that; the utility model is not limited to above-described embodiment, can also make more kinds of variants and modifications according to instruction of the present utility model, and these variants and modifications all drop in the utility model scope required for protection.
Claims (10)
1. for the signal transmitting and receiving circuit of LED driver, it is characterized in that: comprise rectifier bridge stack D1, photoelectrical coupler U1, photoelectrical coupler U2, input/output interface J1, power end, the voltage of described power end is 3.3V;
Described rectifier bridge stack D1 comprises four pins, wherein pin 1, pin 2 are direct current input, pin 3, pin 4 are respectively anodal output, negative pole output, described photoelectrical coupler U1 comprises four pins, pin 1, pin 2 are input, and pin 3, pin 4 are output, and described photoelectrical coupler U2 comprises four pins, pin 1, pin 2 are input, and pin 3, pin 4 are output;
Pin 1, the pin 2 of described rectifier bridge stack D1 connect input/output interface J1, and pin 3, the pin 4 of rectifier bridge stack D1 are connected with pin 1, the pin 2 of photoelectrical coupler U1;
Pin 3 ground connection of described photoelectrical coupler U1, pin 4 connects resistance R in parallel 2, resistance R 3, the other end of resistance R 2 connects power end, the other end of resistance R 3 connects negative level output CMP1-, described power end is also connected with resistance R 4, the resistance R 5 of series connection, the other end ground connection of resistance R 5, is connected positive level output CMP1+ between resistance R 4 and resistance R 5;
The pin 1 of described photoelectrical coupler U2 is connected with power end, pin 2 is connected with signal receiving end DALI, between the pin 1 of photoelectrical coupler U2 and power end, be connected with resistance R 6, pin 3, the pin 4 of photoelectrical coupler U2 are connected with pin 4, the pin 3 of rectifier bridge stack D1 respectively.
2. the signal transmitting and receiving circuit for LED driver according to claim 1, is characterized in that: between the pin 1 of described photoelectrical coupler U1 and the pin 3 of rectifier bridge stack D1, be connected with resistance R 1.
3. the signal transmitting and receiving circuit for LED driver according to claim 2, is characterized in that: the resistance of described resistance R 1 is 8 ~ 8.5K Ω.
4. the signal transmitting and receiving circuit for LED driver according to claim 1, is characterized in that: between the pin 2 of described photoelectrical coupler U2 and power end, be connected with resistance R 7.
5. the signal transmitting and receiving circuit for LED driver according to claim 1, it is characterized in that: between the pin 3 of described photoelectrical coupler U2 and pin 4, be connected with triode Q1, resistance R 8, the base stage of triode Q1 is connected with the pin 3 of photoelectrical coupler U2, collector electrode is connected with the pin 4 of photoelectrical coupler U2, and the two ends of resistance R 8 are connected with the base stage of triode Q1, the pin 3 of photoelectrical coupler U2 respectively.
6. the signal transmitting and receiving circuit for LED driver according to claim 5, is characterized in that: between the emitter of described triode Q1 and the pin 3 of photoelectrical coupler U2, be connected with resistance R 9.
7. the signal transmitting and receiving circuit for LED driver according to claim 6, is characterized in that: the resistance of described resistance R 9 is 47K Ω.
8. the signal transmitting and receiving circuit for LED driver according to claim 5, is characterized in that: the model of described triode Q1 is FMMT491A.
9. the signal transmitting and receiving circuit for LED driver according to claim 1, is characterized in that: the model of described rectifier bridge stack D1 is MB2S.
10. the signal transmitting and receiving circuit for LED driver according to claim 1, is characterized in that: the model that described photoelectrical coupler U1, photoelectrical coupler U2 adopt is TLP181.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320857402.4U CN203884020U (en) | 2013-12-24 | 2013-12-24 | Signal transmitting and receiving circuit for use in LED driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320857402.4U CN203884020U (en) | 2013-12-24 | 2013-12-24 | Signal transmitting and receiving circuit for use in LED driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203884020U true CN203884020U (en) | 2014-10-15 |
Family
ID=51684477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320857402.4U Expired - Fee Related CN203884020U (en) | 2013-12-24 | 2013-12-24 | Signal transmitting and receiving circuit for use in LED driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203884020U (en) |
-
2013
- 2013-12-24 CN CN201320857402.4U patent/CN203884020U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203734532U (en) | Chopper circuit used for LED driver | |
| CN105554953A (en) | Illumination control method based on power-frequency carrier of power line | |
| CN104540285A (en) | Dali lamp controller | |
| CN202309677U (en) | An input circuit capable of being compatible with the polarity of different signal levels | |
| CN203761654U (en) | Digital adaptive type dimming power supply | |
| CN201699683U (en) | Photoelectrical coupling circuit for improving data transfer rate | |
| CN202535613U (en) | General-type communication dimming circuit | |
| CN201583940U (en) | Device for indicating running state of network and network terminal | |
| CN203884020U (en) | Signal transmitting and receiving circuit for use in LED driver | |
| CN202696973U (en) | Light-emitting diode (LED) yard lamp | |
| CN202996717U (en) | Relay drive circuit in resistance-capacitance voltage drop-down circuit | |
| CN104619063A (en) | Illumination control circuit | |
| CN204191001U (en) | MPPT solar street lamp controller | |
| CN104349528A (en) | Indicating lamp status display system | |
| CN203911828U (en) | Drive board control circuit | |
| CN202818730U (en) | Multifunctional working lamp | |
| CN203219568U (en) | Central control system with LED intelligent lighting sets | |
| CN201878385U (en) | Automatic dimming circuit of ecological house | |
| CN202435648U (en) | Electrodeless dimming switch based on LED illumination | |
| CN206149552U (en) | A dimmer circuit for non - isolation LED drive power supply | |
| CN104679076A (en) | Intelligent temperature and humidity regulating system for transformer | |
| CN204906358U (en) | strong and weak electric isolation device and electric appliance | |
| CN204191000U (en) | LED light-adjusting module | |
| CN203951646U (en) | A kind of device that judges different LED lighting module according to voltage | |
| CN203368851U (en) | A driving power supply of an LED stepless light modulation which allows timing to be carried out |
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: 20141015 Termination date: 20171224 |