CN208675581U - A kind of control circuit of the LED light of high brightness - Google Patents

Abstract

The utility model discloses a kind of control circuits of the LED light of high brightness, the control circuit of the LED light of the high brightness includes capacitor pressure drop circuit, rectification circuit, LED illuminating circuit, light control circuit and feed circuit, the capacitor pressure drop circuit, rectification circuit, light control circuit and LED illuminating circuit are sequentially connected in series, the feed circuit 5 is connected in parallel on the both ends of the LED illuminating circuit, the capacitor pressure drop circuit includes first capacitor C1 and first resistor R1 in parallel, it is 15V or less that 220V alternating current, which flows into the rectification circuit alternating voltage after the first capacitor C1 and first resistor R1 decompression current limliting, the rectification circuit includes first diode D1, second diode D2, third diode D3 and the 4th diode D4, the first diode D1, second diode D2, third diode D3 and the 4th diode D4 constitute bridge rectifier, and the voltage after the rectifier circuit rectifies is in 14V hereinafter, and being coupled into the LED illuminating circuit via the second capacitor C2.

Description

A kind of control circuit of the LED light of high brightness

Technical field

The utility model relates to led light technology field, the control circuit of the LED light of specifically a kind of high brightness.

Background technique

Currently, the development of LED Novel electric light source is maked rapid progress, since it is compared with conventional incandescent energy-saving lamp, there are energy conservation, length The features such as longevity, response time are short, environmentally friendly is widely used in illuminating industry, display screen industry, automobile lamp, traffic lamps and lanterns etc. Industry.Especially in illuminating industry, as every country increasingly payes attention to lighting energy saving and environmental issue, carrying out making energetically Use LED lamp.

Ultra-high brightness LED lamp is Novel LED light nearly a hundred times higher than the brightness of general LED light, and shell is colorless and transparent Resin-encapsulated, illuminator can inherently issue the light of a certain wavelength, to show a certain color.Ultra-high brightness LED lamp It is widely used in outdoor billboard, electronic display, traffic lights, sign board, automobile tail light, LED backlight etc. is super bright It spends LED and is used for outdoor billboard, electronic display, be all a large amount of LED light series and parallels when the occasions such as traffic lights, sign board It is composed, since there are many led quantity, the requirement to control circuit is high.

Utility model content

The purpose of this utility model is to provide a kind of control circuits of the LED light of high brightness, to solve in background technique The problem of proposition.To achieve the above object, the utility model provides the following technical solutions；

A kind of control circuit of the LED light of high brightness, the control circuit of the LED light of the high brightness include capacitor pressure drop electricity Road, rectification circuit, LED illuminating circuit, light control circuit and feed circuit, the capacitor pressure drop circuit, rectification circuit, photocontrol Circuit and LED illuminating circuit are sequentially connected in series, and the feed circuit is connected in parallel on the both ends of the LED illuminating circuit, the capacitor pressure Drop circuit includes first capacitor C1 and first resistor R1,220V alternating current in parallel through the first capacitor C1 and first resistor R1 It is 15V hereinafter, the rectification circuit includes first diode D1, second that the rectification circuit alternating voltage is flowed into after decompression current limliting Diode D2, third diode D3 and the 4th diode D4, the first diode D1, the second diode D2, third diode D3 and the 4th diode D4 constitutes bridge rectifier, and the voltage after the rectifier circuit rectifies is in 14V hereinafter, and via second Capacitor C2 is coupled into the LED illuminating circuit, as the operating voltage of the LED illuminating circuit, the light control circuit packet Include photo resistance Rz, second resistance R2 and triode Q1, the voltage at the both ends the second capacitor C2 through the photo resistance Rz and The DC offset voltage of the triode Q1 base stage is supplied to after second resistance R2 partial pressure, to control the LED illuminating circuit Operating voltage is integrated with voltage reference and the first transport and placing device K1 and the second transport and placing device K2, the feedback electricity in the feed circuit The electric current in the control circuit of the LED light of the high brightness is detected on road, and converts thereof into voltage and voltage reference progress Compare.

Preferably, the LED illuminating circuit includes the LED light of n concatenated high brightness.

Preferably, the voltage reference is 2.5V.

Preferably, the feed circuit is constant current constant voltage secondary side controller.

Preferably, the capacitance of the first capacitor C1 is 0.22u, and the capacitance of the second capacitor C2 is 100u.

Preferably, the resistance value of the first electricity group R1 is the Europe 1M, and the resistance value of the second capacitor R2 is the Europe 2K.

Compared with prior art, the utility model has the beneficial effects that being let out since first capacitor C1 does not consume active power The power for putting resistance consumption is negligible, therefore the power consumption of entire circuit is about 0-2 (W), and power consumption is extremely low, and in this way Feed circuit can make the voltage and current of output all in stable state.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of the control circuit of the LED light of high brightness provided by the utility model；

Fig. 2 is the structural schematic diagram of another of the control circuit of the LED light of high brightness provided by the utility model；

Fig. 3 is the structural schematic diagram of the feed circuit of the control circuit of the LED light of high brightness provided by the utility model；

Wherein, capacitor pressure drop circuit 1, rectification circuit 2, LED illuminating circuit 3, light control circuit 4 and feed circuit 5.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical aspect in the utility model embodiment 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 embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-Fig. 3 is please referred to, a kind of embodiment provided by the utility model:

A kind of control circuit of the LED light of high brightness, the control circuit of the LED light of the high brightness include capacitor pressure drop electricity Road 1, rectification circuit 2, LED illuminating circuit 3, light control circuit 4 and feed circuit 5, the capacitor pressure drop circuit 1, rectification circuit 2, light control circuit 4 and LED illuminating circuit 3 are sequentially connected in series, and the feed circuit 5 is connected in parallel on the two of the LED illuminating circuit 3 End, the capacitor pressure drop circuit 1 include first capacitor C1 and first resistor R1,220V alternating current in parallel through the first capacitor It is 15V hereinafter, the rectification circuit 2 includes that 2 alternating voltage of rectification circuit is flowed into after C1 and first resistor R1 decompression current limliting First diode D1, the second diode D2, third diode D3 and the 4th diode D4, the first diode D1, the two or two Pole pipe D2, third diode D3 and the 4th diode D4 constitute bridge rectifier, and the voltage after the rectification circuit 2 rectifies exists 14V via the second capacitor C2 hereinafter, and be coupled into the LED illuminating circuit 3, the work electricity as the LED illuminating circuit 3 Pressure, the light control circuit 4 include photo resistance Rz, second resistance R2 and triode Q1, the electricity at the both ends the second capacitor C2 The DC offset voltage that the triode Q1 base stage is supplied to after the photo resistance Rz and second resistance R2 partial pressure is pressed, with control The operating voltage of the LED illuminating circuit 3 is made, voltage reference and the first transport and placing device K1 and are integrated in the feed circuit 5 Two transport and placing device K2, the electric current in the control circuit for the LED light that the feed circuit 5 detects the high brightness, and convert thereof into Voltage is compared with the voltage reference.

In the present embodiment, the LED illuminating circuit 3 includes the LED light of n concatenated high brightness.

In the present embodiment, the voltage reference is 2.5V.

In the present embodiment, the feed circuit 5 is constant current constant voltage secondary side controller.

In the present embodiment, the capacitance of the first capacitor C1 is 0.22u, and the capacitance of the second capacitor C2 is 100u.

In the present embodiment, the resistance value of the first electricity group R1 is the Europe 1M, and the resistance value of the second capacitor R2 is the Europe 2K.

Working principle: the utility model is provided with a kind of control circuit of the LED light of high brightness, and 220V alternating current is through first Alternating voltage after capacitor C1, first resistor R1 decompression current limliting in rectification circuit is about 15V, is rectified by rectification circuit, Operating voltage of the DC voltage of about 14V as LED illuminating circuit 3, the work of LED illuminating circuit 3 are obtained on second capacitor C2 Electric current is about 14mA.Since capacitor first capacitor C1 does not consume active power, the power of bleeder resistance consumption is negligible, because The power consumption of this entire circuit is about 0-2 (W).

In order to further save electric energy and extend the service life of high brightness LED, joined in circuit by photosensitive The photoelectric control circuit of the compositions such as resistance Rz, 3rd resistor R3 and triode VT1, it is reachable in the resistance value of night photo resistance Rz 100K or more, at this moment the voltage at the second both ends capacitor C2 is supplied to triode Q1 after photo resistance Rz and second resistance R2 partial pressure The DC offset voltage very little of base stage, triode Q1 cut-off, to the no any influence of the work of light emitting diode；When daytime, by 1OK can be reduced in the resistance value of photoelectric effect, photo resistance Rz hereinafter, at this moment triode Q1 is connected and approaches saturation, Due to can only achieve 15mA by the electric current maximum of C1, due to the shunting of triode Q1, the voltage on the second capacitor C2 can decline To 4V or less.

Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all It is included within the scope of protection of this utility model.

Claims (6)

1. a kind of control circuit of the LED light of high brightness, it is characterised in that: the control circuit of the LED light of the high brightness includes Capacitor pressure drop circuit (1), rectification circuit (2), LED illuminating circuit (3), light control circuit (4) and feed circuit (5), the electricity Hold pressure drop circuit (1), rectification circuit (2), light control circuit (4) and LED illuminating circuit (3) to be sequentially connected in series, the feed circuit (5) both ends of the LED illuminating circuit (3) are connected in parallel on, the capacitor pressure drop circuit (1) includes first capacitor C1 in parallel and the One resistance R1,220V alternating current flows into the rectification circuit (2) after the first capacitor C1 and first resistor R1 decompression current limliting Alternating voltage be 15V hereinafter, the rectification circuit (2) include first diode D1, the second diode D2, third diode D3 and 4th diode D4, the first diode D1, the second diode D2, third diode D3 and the 4th diode D4 constitute bridge-type Rectification circuit, the voltage after rectification circuit (2) rectification is in 14V hereinafter, and being coupled into the LED hair via the second capacitor C2 In optical circuit (3), as the operating voltage of the LED illuminating circuit (3), the light control circuit (4) include photo resistance Rz, The voltage of second resistance R2 and triode Q1, the both ends the second capacitor C2 are divided through the photo resistance Rz and second resistance R2 It is supplied to the DC offset voltage of the triode Q1 base stage, afterwards to control the operating voltage of the LED illuminating circuit (3), institute It states and is integrated with voltage reference and the first transport and placing device K1 and the second transport and placing device K2, feed circuit (5) detection in feed circuit (5) Electric current in the control circuit of the LED light of the high brightness, and convert thereof into voltage and be compared with the voltage reference.

2. a kind of control circuit of the LED light of high brightness according to claim 1, it is characterised in that: the LED shines electric Road (3) includes the LED light of n concatenated high brightness.

3. a kind of control circuit of the LED light of high brightness according to claim 2, it is characterised in that: the voltage reference For 2.5V.

4. a kind of control circuit of the LED light of high brightness according to claim 3, it is characterised in that: the feed circuit It (5) is constant current constant voltage secondary side controller.

5. a kind of control circuit of the LED light of high brightness according to claim 4, it is characterised in that: the first capacitor The capacitance of C1 is 0.22u, and the capacitance of the second capacitor C2 is 100u.

6. a kind of control circuit of the LED light of high brightness according to claim 1, it is characterised in that: the described first electric group The resistance value of R1 is the Europe 1M, and the resistance value of the second capacitor R2 is the Europe 2K.