CN207321582U

CN207321582U - A kind of double-colored control LED circuit

Info

Publication number: CN207321582U
Application number: CN201721029503.7U
Authority: CN
Inventors: 龚备文
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-17
Filing date: 2017-08-17
Publication date: 2018-05-04
Anticipated expiration: 2027-08-17

Abstract

The utility model discloses a kind of double-colored control LED circuit, including chip U1, chip U2, capacitance C1 and capacitance C3；One end connection capacitance C2, capacitance C3, capacitance C4, the cathode of diode D4, the pin 4 of chip U2, the cathode of diode D1,4 feet of chip U1, interface LED+ and the positive pole Vin+ of the capacitance C1, the other end of the other end connection capacitance C2 of capacitance C1, capacitance C5, the anode of diode D2, resistance RS3, the pin 2 of resistance RS4 and chip U1, the double-colored control LED circuit of the utility model is made of a lamp bead and set of circuits, realize single photochromic, two kinds photochromic, and two colors are lighted at the same time, 50 percent by volume production cost reduction.

Description

A kind of double-colored control LED circuit

Technical field

A kind of LED lighting technology is the utility model is related to, is specifically a kind of double-colored control LED circuit.

Background technology

As the negative effect caused by Global Greenhouse Effect constantly shows, every country all makees energy-saving and emission-reduction in the world By the major issue that must take into consideration in native economic development, LED lighting technology is exactly to come into being under this background An emerging power-saving technology.LED illumination product has been had been applied in daily life at present, with developing rapidly for LED.It is existing There is long lifespan, solid state lighting to be hardly damaged in the conventional light source that white LED light source is compared, the environmental protection of specular removal, mercury-free, antidetonation etc. Advantage, future will become third generation light source, will bring the revolution again of lighting area.

One LED can only send a kind of light, therefore want that sending two kinds of light needs two LED to form double-colored circuit for lamp, now Product be made of two lamp beads or double circuit control, fraction defective is high, and market circulation rate is limited.

Utility model content

The purpose of this utility model is to provide a kind of double-colored control LED circuit is proposed in the above background technology to solve Problem.

To achieve the above object, the utility model provides following technical solution：

A kind of double-colored control LED circuit, including chip U1, chip U2, capacitance C1 and capacitance C3；One end of the capacitance C1 Connect capacitance C2, capacitance C3, capacitance C4, the cathode of diode D4, the pin 4 of chip U2, the cathode of diode D1, chip U1 4 feet, interface LED+ and positive pole Vin+, the other end of the other end connection capacitance C2 of capacitance C1, capacitance C5, diode D2 Anode, resistance RS3, the pin 2 of resistance RS4 and chip U1, the G levels of the 1 connecting triode Q1 of pin of chip U1, triode Q1's The other end, the other end of resistance RS4 and the pin 3 of chip U1 of S cascade connecting resistances RS3, the other end connection chip of capacitance C5 The pin 5 of U1 and the pin 6 of chip U1, the anode and inductance L1 of the D levels connection diode D1 of triode Q1, inductance L1's is another Hold connecting interface LED-, the other end, capacitance C6, the anode of diode D3, the resistance of the other end connection capacitance C4 of capacitance C3 The pin 2 of RS2, resistance RS1 and chip U2, the G levels of the 1 connecting triode Q2 of pin of chip U2, the S levels connection electricity of triode Q2 Hinder the other end, the other end of resistance RS1 and the pin 3 of chip U2 of RS2, the pin 5 of the other end connection chip U2 of capacitance C6 With the pin 6 of chip U2, the anode and inductance L2 of the D levels connection diode D4 of triode Q2, the other end of inductance L2 connects Mouth LED-.

As further program of the utility model：The model of the chip U1 and chip U2 are FP7175.

Compared with prior art, the beneficial effects of the utility model are：The double-colored control LED circuit of the utility model is by one Lamp bead and set of circuits composition, realize single photochromic, two kinds photochromic, and two colors are lighted at the same time, by volume production cost reduction 50 percent.

Brief description of the drawings

Fig. 1 is the circuit diagram of the double-colored control LED circuit of the utility model.

Embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained, shall fall within the protection scope of the present invention.

Referring to Fig. 1, in the utility model embodiment, a kind of double-colored control LED circuit, including chip U1, chip U2, electricity Hold C1 and capacitance C3；One end connection capacitance C2 of the capacitance C1, capacitance C3, capacitance C4, the cathode of diode D4, chip U2 Pin 4, the cathode of diode D1,4 feet of chip U1, the other end connection electricity of interface LED+ and positive pole Vin+, capacitance C1 Hold the pin 2 of the other end of C2, capacitance C5, the anode of diode D2, resistance RS3, resistance RS4 and chip U1, chip U1's draws The G levels of 1 connecting triode Q1 of foot, the other end, the other end and chip U1 of resistance RS4 of the S cascade connecting resistances RS3 of triode Q1 Pin 3, the pin 5 of other end connection chip U1 and the pin 6 of chip U1 of capacitance C5, two poles of D levels connection of triode Q1 The anode and inductance L1 of pipe D1, the other end connection capacitance C4's of the other end connecting interface LED-, capacitance C3 of inductance L1 is another The pin 2 at end, capacitance C6, the anode of diode D3, resistance RS2, resistance RS1 and chip U2, the pin 1 of chip U2 connect three poles The G levels of pipe Q2, the other end, the other end of resistance RS1 and the pin 3 of chip U2 of the S cascade connecting resistances RS2 of triode Q2, electricity Hold the pin 5 of other end connection chip U2 and the pin 6 of chip U2 of C6, the anode of the D levels connection diode D4 of triode Q2 With inductance L2, the other end connecting interface LED- of inductance L2.

The model of chip U1 and chip U2 are FP7175.

The operation principle of the utility model is：Two common anode chips in lamp bead are controlled by two constant current chip U1, make lamp bead Two chip switch operatings, this control circuit are worked using average-current mode, and the lamp bead electric current of output is joined from voltage and inductance Several changes influences, its circuit includes two U1 chips, power switch pipe Q1, sustained diode 1, anti-reverse diode D2, electricity Feel L1, sampling resistor RS1RS2, RS3RS4, C1C2 filter capacitor, two constant current chip input cathode Vin+ are communicated, anode Vin- Separate, the color of dual chip LED common anode lamp beads is controlled by switching anode.

Same lamp bead, two kinds or two kinds of car light lamp is controlled by copolar (with cathode either same anode) set of circuits The function that color above is lighted, meets that the lighting demand white light of various weather car lights adds yellow light, meets existing during misty rain snowy day The problem of car light penetration power is not strong white light adds green light, meet vehicle go hunting car light do not startle back with fear prey the needs of blue light, feux rouges meet Tracking function is a variety of photochromic, meets any road conditions, various car lighting demands during heavy weather.

It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new The scope of type is indicated by the appended claims rather than the foregoing description, it is intended that the equivalency fallen in claim is contained All changes in justice and scope are embraced therein.Any reference numeral in claim should not be considered as limitation Involved claim.

Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art It is appreciated that other embodiment.

Claims

1. a kind of double-colored control LED circuit, including chip U1, chip U2, capacitance C1 and capacitance C3；It is characterized in that, the electricity Hold one end connection capacitance C2, capacitance C3, capacitance C4, the cathode of diode D4, the pin 4 of chip U2, the moon of diode D1 of C1 Pole, 4 feet of chip U1, interface LED+ and positive pole Vin+, capacitance C1 other end connection capacitance C2 the other end, capacitance C5, the anode of diode D2, resistance RS3, the pin 2 of resistance RS4 and chip U1, the G of the 1 connecting triode Q1 of pin of chip U1 Level, the other end, the other end of resistance RS4 and the pin 3 of chip U1 of the S cascade connecting resistances RS3 of triode Q1, capacitance C5's is another The pin 5 of one end connection chip U1 and the pin 6 of chip U1, the anode and inductance L1 of the D levels connection diode D1 of triode Q1, The other end of the other end connection capacitance C4 of the other end connecting interface LED-, capacitance C3 of inductance L1, capacitance C6, diode D3 Anode, resistance RS2, the pin 2 of resistance RS1 and chip U2, the G levels of the 1 connecting triode Q2 of pin of chip U2, triode Q2's The other end, the other end of resistance RS1 and the pin 3 of chip U2 of S cascade connecting resistances RS2, the other end connection chip of capacitance C6 The pin 5 of U2 and the pin 6 of chip U2, the anode and inductance L2 of the D levels connection diode D4 of triode Q2, inductance L2's is another Hold connecting interface LED-.

2. a kind of double-colored control LED circuit according to claim 1, it is characterised in that the chip U1's and chip U2 Model is FP7175.