CN207053839U - A kind of phase-cut dimming LED circuit with small night lamp function - Google Patents
A kind of phase-cut dimming LED circuit with small night lamp function Download PDFInfo
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- CN207053839U CN207053839U CN201720695961.8U CN201720695961U CN207053839U CN 207053839 U CN207053839 U CN 207053839U CN 201720695961 U CN201720695961 U CN 201720695961U CN 207053839 U CN207053839 U CN 207053839U
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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
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- 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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Abstract
The utility model discloses a kind of phase-cut dimming LED circuit with small night lamp function, including input rectification circuit, switch detection control circuit, mini light night drive circuit, mini light night auxiliary circuit and main drive circuit, the output end difference connecting valve detection control circuit of input rectification circuit and the input of main drive circuit, the output end of switch detection control circuit connects the input of mini light night drive circuit and mini light night auxiliary circuit respectively, and the output end of mini light night auxiliary circuit connects main drive circuit.Using the utility model, general lighting, small night lamp function and dimming function can be achieved to be perfectly combined, general lighting can be both used as by forming a kind of be directly installed on light fixture, it can be used as the LED lamp of mini light night again, also solve the phase-cut dimmer operation irregularity when key lighting pattern switching is into mini light night pattern and the phenomenon of flashing light occur.
Description
Technical field
It the utility model is related to LED electric light source technologies field, more particularly to a kind of phase-cut dimming LED with small night lamp function
Circuit.
Background technology
In the case where global climate warms up crisis and energy scarcity, due to LED（Light Emitting Diode）According to
It is bright that there is the characteristics such as environmental protection, light efficiency height and long lifespan, therefore LED just in high volume replaces conventional incandescent and electricity-saving lamp.
For common home lighting LED, it is mainly used for illuminating.But the light of LED often excessively pierces
Eye, usual people can close LED in order to avoid influenceing to sleep during sleep, and when people get up at midnight, the LED having been switched off is then
Illumination can not be provided in time, it is extremely inconvenient.
With the development of society and the improvement of people's living standards, people increasingly pursue light fixture functional diversities, simultaneously
It is also growing day by day to the demand of light-adjustable LED lamp, therefore, the concept of mini light night is also gradually introduced in real life.At present, market
On mini light night, most of during application be directly inserted on socket, and such child easily touches, and wastes socket
Resource, also affect the attractive in appearance of room.In addition, existing LED lamp is also the ordinary lamp and lantern that can not be dimmed mostly, function list
One, it is impossible to realize multi-functional switching, it is impossible to meet that people have the needs of dimming function to light fixture.For example, existing LED lamp
Without mini light night auxiliary circuit, when switching to mini light night pattern with switch under key lighting pattern, the meeting during switching
There is the phenomenon of flashing light；And for example, the dimming power source poor compatibility of existing LED lamp, in the light modulator pair using poor compatibility
When LED is dimmed, the AC signal after copped wave is more mixed and disorderly, and because of its detection circuit imperfection, the signal detected is miscellaneous
Disorderly, light flash has been ultimately resulted in.
Therefore, existing LED can not realize that mini light night is compatible with phase-cut dimming, and existing dimming power source is present with cutting
Phase light modulator is compatible poor, and dimming scope is narrow, the shortcomings of dimming effect difference.
Utility model content
Technical problem to be solved in the utility model is, there is provided a kind of phase-cut dimming LED electricity with small night lamp function
Road, general lighting, small night lamp function and dimming function can be achieved and be perfectly combined, also solve in key lighting pattern switching into small night
There is the phenomenon of flashing light in phase-cut dimmer operation irregularity during lamp pattern.
In order to solve the above-mentioned technical problem, the utility model provides a kind of phase-cut dimming LED electricity with small night lamp function
Road, including input rectification circuit, switch detection control circuit, mini light night drive circuit, mini light night auxiliary circuit and main driving electricity
Road, the output end difference connecting valve detection control circuit of the input rectification circuit and the input of main drive circuit, it is described
The output end of switch detection control circuit connects the input of mini light night drive circuit and mini light night auxiliary circuit respectively, described small
The output end of night-light auxiliary circuit connects main drive circuit.
As the improvement of such scheme, the input rectification circuit includes rectifier bridge, piezo-resistance and fusing resistor, described
The output end difference connecting valve detection control circuit of rectifier bridge and main drive circuit, two inputs difference of the rectifier bridge
It is connected with the both ends of piezo-resistance, one end of the rectifier bridge and piezo-resistance connects live wire, the rectification by fusing resistor
Bridge and the other end of piezo-resistance connection zero line.
As the improvement of such scheme, the switch detection control circuit includes power supply circuit, the switch being electrically connected to each other
Signal deteching circuit and control circuit, the power supply circuit is used to detect circuit and control circuit power supply for switching signal, described
Switching signal detection circuit is used for the folding signal of detection switch, and the control circuit is used to generate control signal.
As the improvement of such scheme, the power supply circuit includes the 3rd NPN type triode, the 3rd voltage-regulator diode, the
Five resistance, the 11st electric capacity, the 12nd electric capacity and the second electrochemical capacitor；One end of 12nd electric capacity connects the 3rd NPN type
The emitter stage of triode, other end ground connection；The positive pole of second electrochemical capacitor connect the 3rd NPN type triode emitter stage and
Power supply, negative pole ground connection；Circuit, the current collection of the 3rd NPN type triode are detected with switching signal respectively in one end of 5th resistance
Pole and control circuit connection, the other end pass through the 11st capacity earth；The positive pole of 3rd voltage-regulator diode is respectively with the 5th
The base stage connection of resistance, the 11st electric capacity and the 3rd NPN type triode, negative pole ground connection, the 3rd NPN type triode and the 3rd
Voltage-regulator diode forms mu balanced circuit.
As the improvement of such scheme, the switching signal detection circuit includes the first voltage-regulator diode, the second voltage stabilizing two
Pole pipe, the tenth electric capacity, the 3rd diode, first resistor, second resistance, 3rd resistor and the 4th resistance；Tenth electric capacity with
4th resistor coupled in parallel is to form anti-jamming circuit；One end of the first resistor is connected with power supply circuit, another to pass through the three or two
Pole pipe, 3rd resistor and the first voltage-regulator diode are connected with anti-jamming circuit；One end of the second resistance and anti-jamming circuit
Connection, the other end are connected with control circuit and are grounded by the second voltage-regulator diode to form overvoltage crowbar.
As the improvement of such scheme, the control circuit includes the second control chip, the 6th PNP type triode, the 6th
Resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 13rd resistance, the 17th resistance and N-MOS pipes;It is described
Second control chip is connected by the 6th resistance with mini light night drive circuit, is connected by the 8th resistance and mini light night auxiliary circuit
Connect, the base stage of the 6th PNP type triode is connected by the 7th resistance, one end of the 9th resistance is connected by the 17th resistance；Institute
The other end for stating the 9th resistance connects the emitter stage of the 6th PNP type triode and the grid of N-MOS pipes respectively, and passes through the tenth electricity
Resistance ground connection；The 6th PNP type triode grounded collector, the source electrode of the N-MOS pipes and drain electrode are grounded respectively；Described tenth
One end of three resistance connects the base stage of the 6th PNP type triode, other end ground connection.
As the improvement of such scheme, the mini light night drive circuit include the 4th NPN type triode, the 11st resistance and
3rd control chip, the base stage of the 4th NPN type triode are connected with switch detection control circuit, the 4th NPN type three
The grounded emitter of pole pipe, the colelctor electrode of the 4th NPN type triode are connected by the 11st resistance with the 3rd control chip,
3rd control chip electrically connects with mini light night.
As the improvement of such scheme, the 5th NPN type triode that the mini light night auxiliary circuit includes being connected with each other, the
Four control chips, the 12nd resistance, the 14th resistance, the 15th resistance, the 16th resistance and the 4th voltage-regulator diode；Described
The base stage of five NPN type triodes is connected with switch detection control circuit, the grounded emitter of the 5th NPN type triode；Institute
The colelctor electrode for stating the 5th NPN type triode is connected by the 12nd resistance with one end of the 15th resistance, the 15th resistance
The other end be connected with the 4th control chip；The colelctor electrode of 5th NPN type triode passes through the 12nd resistance and the 16th
One end connection of resistance, the other end of the 16th resistance is connected with the 4th control chip and the 14th resistance respectively, described
14th resistance connects main drive circuit；The colelctor electrode of 5th NPN type triode connects one end of the 4th voltage-regulator diode,
The other end ground connection of 4th voltage-regulator diode.
As the improvement of such scheme, the main drive circuit includes the first control chip, the first diode, the two or two pole
Pipe, the second electric capacity, the 3rd electric capacity, the 5th electric capacity, the 6th electric capacity, air core inductor, iron inductance, the first startup resistance, second are opened
Dynamic resistance, the 18th resistance, the first electrochemical capacitor and the 19th resistance；5th electric capacity, the 6th electric capacity, first start resistance
And second start resistance one end ground connection, the other end connect the first control chip；First diode, air core inductor and the iron core
Inductance is sequentially connected in series；Second electric capacity one end ground connection, the other end are connected between the first diode and air core inductor；Described
Three electric capacity one end are grounded, and the other end is connected between air core inductor and iron inductance；One end connection the of 18th resistance
One control chip, the other end are connected between air core inductor and iron inductance；One end of second diode respectively with iron core
Inductance and the connection of the first control chip, other end connection mini light night auxiliary circuit；The positive pole connection the of first electrochemical capacitor
Two diodes and mini light night drive circuit, negative pole ground connection；One end of 19th resistance connects the second diode and mini light night
Drive circuit, other end ground connection.
As the improvement of such scheme, the first pin, second pin are provided with first control chip, the 3rd is drawn
Pin, the 4th pin, the 5th pin, the 6th pin, the 7th pin and the 8th pin；First pin and the 18th resistance connect
Connect, the second pin starts resistance by first respectively and the second startup resistance eutral grounding, the 3rd pin pass through the 5th electricity
Holding ground connection, the 4th pin is grounded respectively by the 6th capacity earth, the 6th pin and the 7th pin, and described the
Eight pins are connected respectively with the second diode and iron inductance.
Implement the utility model, have the advantages that：
The utility model passes through input rectification circuit, switch detection control circuit, mini light night drive circuit, mini light night is auxiliary
Help circuit and main drive circuit to be combined, realize that small night lamp function and dimming function are perfectly combined, form one kind and be directly installed on
General lighting can be both used as on light fixture, can be used as the LED lamp of mini light night again, has both avoided and has wasted socket resource, also can
Make room more attractive in appearance.
Specifically, switch detection control circuit determines mode of operation by on-off times（Key lighting pattern, mini light night mould
Formula）, the power and energy of general lighting and mini light night can be effectively realized, can keep bright in sleep, make one unlikely when getting up
In feeling about in the dark；Meanwhile mini light night auxiliary circuit solves the phase-cut dimming when key lighting pattern switching is into mini light night pattern well
There is the phenomenon of flashing light in device operation irregularity；In addition, the utility model can also connect light modulator（The first control in main drive circuit
Coremaking piece）, the first control chip and the circuit cooperation of periphery can realize phase-cut dimming function well, commonly be shone so as to form collection
Bright, mini light night, three kinds of light modulation act on the integral phase-cut dimming LED circuit with small night lamp function, and people can be according to oneself
Hobby adjust the brightness of LED, just meet demand of the market to dimming LED lamp, so as to remove from choose mini light night and
The trouble of two kinds of light fixtures of dimming lamp；Correspondingly, diversified LED, have the features such as manipulation is simple, and cost is low can pole be beneficial to
The design of light-adjustable LED lamp, production and popularization.
Brief description of the drawings
Fig. 1 is the structural representation of phase-cut dimming LED circuit of the utility model with small night lamp function；
Fig. 2 is the circuit diagram of phase-cut dimming LED circuit of the utility model with small night lamp function.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type is described in further detail.Only this state, the utility model occur in the text or will appear from upper and lower, left and right, it is preceding,
Afterwards, the orientation such as inside and outside word, only on the basis of accompanying drawing of the present utility model, it is not to specific restriction of the present utility model.
Referring to Fig. 1, Fig. 1 shows the concrete structure of phase-cut dimming LED circuit of the utility model with small night lamp function, its
Including input rectification circuit 1, switch detection control circuit 2, mini light night drive circuit 3, mini light night auxiliary circuit 4 and main driving electricity
Road 5, the output end difference connecting valve detection control circuit 2 of the input rectification circuit 1 and the input of main drive circuit 5,
The output end of the switch detection control circuit 2 connects the input of mini light night drive circuit 3 and mini light night auxiliary circuit 4 respectively
End, the output end of the mini light night auxiliary circuit 4 connect main drive circuit 5.
Specifically：
The input rectification circuit 1 is used to AC signal being converted to direct current signal.
The switch detection control circuit 2 is used for the folding signal number of real-time detection switch and produces corresponding control letter
Number.
The mini light night drive circuit 3 is used to drive mini light night to work.
The mini light night auxiliary circuit 4 is used for real-time adjustment work electric current.
The main drive circuit 5 is used to drive key lighting lamp to work and adjusts the brightness of key lighting lamp.
During work, the input rectification circuit 1 is powered for switch detection control circuit 2 and main drive circuit 5, the switch
Detect the folding signal number of 2 real-time detection switch of control circuit and produce corresponding control signal to drive mini light night driving electricity
Road 3, mini light night auxiliary circuit 4 and main drive circuit 5, wherein, the mini light night drive circuit 3 drives mini light night work, described
The real-time adjustment work electric current of mini light night auxiliary circuit 4, the main drive circuit 5 drive key lighting lamp to work and adjust key lighting lamp
Brightness.
Therefore, the utility model by by input rectification circuit 1, switch detection control circuit 2, mini light night drive circuit 3,
Mini light night auxiliary circuit 4 and main drive circuit 5 are combined, and realize that small night lamp function and dimming function are perfectly combined, and are formed a kind of
General lighting can be both used as by being directly installed on light fixture, be can be used as the LED lamp of mini light night again, both avoided waste socket
Resource, it can also make room more attractive in appearance.Specifically, switch detection control circuit 2 determines mode of operation by on-off times（It is main
Light illumination mode, mini light night pattern）, the power and energy of general lighting and mini light night can be effectively realized, can keep bright in sleep,
Make one to be unlikely to feel about in the dark when getting up；Meanwhile mini light night auxiliary circuit 4 solved in key lighting pattern switching into small night well
There is the phenomenon of flashing light in phase-cut dimmer operation irregularity during lamp pattern；In addition, the utility model can also connect light modulator（Main drive
Dynamic circuit 5）, the circuit of light modulator and periphery, which coordinates, can realize phase-cut dimming function well, so as to form collection general lighting, small
Night-light, three kinds of light modulation act on the integral phase-cut dimming LED circuit with small night lamp function, and people can be according to the hobby of oneself
To adjust the brightness of LED, demand of the market to dimming LED lamp is just met, mini light night and desk lamp with dimmer switch are chosen so as to remove from
Has the trouble of two kinds of light fixtures；Correspondingly, diversified LED, have the features such as manipulation is simple, and cost is low can pole be beneficial to tunable optical
The design of LED, production and popularization.
Referring to Fig. 2, Fig. 2 shows the circuit diagram of phase-cut dimming LED circuit of the utility model with small night lamp function.
The input rectification circuit 1 includes rectifier bridge DB1, piezo-resistance RV1 and fusing resistor FR1, the rectifier bridge DB1
Output end difference connecting valve detection control circuit 2 and main drive circuit 5, two inputs difference of the rectifier bridge DB1
It is connected with piezo-resistance RV1 both ends, one end of the rectifier bridge DB1 and piezo-resistance RV1 pass through fusing resistor FR1 connections fire
Line, the other end connection zero line of the rectifier bridge DB1 and piezo-resistance RV1.
It should be noted that AC signal is switched to direct current signal by the input rectification circuit 1 by rectifier bridge DB1.
It is described switch detection control circuit 2 include be electrically connected to each other power supply circuit 22, switching signal detection circuit 21 and
Control circuit 23, the power supply circuit 22 is used to detect circuit 21 for switching signal and control circuit 23 is powered, the switch letter
Number detection circuit 21 be used for detection switch folding signal, the control circuit 23 be used for generate control signal.
During work, power supply circuit 22 detects circuit 21 in real time for switching signal and control circuit 23 is powered, switching signal inspection
The folding signal of 21 real-time detection switch of slowdown monitoring circuit, the testing result that control circuit 23 detects circuit 21 according to switching signal generate
Control signal to drive mini light night drive circuit 3, mini light night auxiliary circuit 4 and main drive circuit 5 respectively.
The power supply circuit 22 includes the 3rd NPN type triode Q3, the 3rd voltage-regulator diode ZD3, the 5th resistance R5, the tenth
One electric capacity C11, the 12nd electric capacity C12 and the second electrochemical capacitor CE2；One end of the 12nd electric capacity C12 connects the 3rd NPN type
Triode Q3 emitter stage, other end ground connection；The positive pole of the second electrochemical capacitor CE2 connects the 3rd NPN type triode Q3's
Emitter stage and power supply, negative pole ground connection；Circuit 21, the 3rd NPN type are detected with switching signal in one end of the 5th resistance R5 respectively
Triode Q3 colelctor electrode and control circuit 23 is connected, and the other end is grounded by the 11st electric capacity C11；The pole of 3rd voltage stabilizing two
Base stage of the pipe ZD3 positive pole respectively with the 5th resistance R5, the 11st electric capacity C11 and the 3rd NPN type triode Q3 is connected, and negative pole connects
Ground, the 3rd NPN type triode Q3 and the 3rd voltage-regulator diode ZD3 form mu balanced circuit.
The switching signal detection circuit 21 includes the first voltage-regulator diode ZD1, the second voltage-regulator diode ZD2, the tenth electricity
Hold C10, the 3rd diode D3, first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4；Tenth electric capacity
C10 is in parallel with the 4th resistance R4 to form anti-jamming circuit；One end of the first resistor R1 is connected with power supply circuit 22, another
It is connected by the 3rd diode D3,3rd resistor R3 and the first voltage-regulator diode ZD1 with anti-jamming circuit；The second resistance R2
One end be connected with anti-jamming circuit, the other end be connected with control circuit 23 and by the second voltage-regulator diode ZD2 be grounded with structure
Into overvoltage crowbar.Wherein, the first voltage-regulator diode ZD1 is used to set minimum cut angle valve value.
The control circuit 23 includes the second control chip U2, the 6th PNP type triode Q6, the 6th resistance R6, the 7th electricity
Hinder R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 13rd resistance R13, the 17th resistance R17 and N-MOS pipes
Q7;The second control chip U2 is connected by the 6th resistance R6 with mini light night drive circuit 3, passes through the 8th resistance R8 and small night
Lamp auxiliary circuit 4 connects, and by the PNP type triode Q6 of the 7th resistance R7 connections the 6th base stage, is connected by the 17th resistance R17
Connect the 9th resistance R9 one end；The other end of the 9th resistance R9 connect respectively the 6th PNP type triode Q6 emitter stage and
N-MOS pipes Q7 grid, and be grounded by the tenth resistance R10；The 6th PNP type triode Q6 grounded collectors, the N-
Metal-oxide-semiconductor Q7 source electrode and drain electrode are grounded respectively；One end of the 13rd resistance R13 connects the 6th PNP type triode Q6 base
Pole, other end ground connection.
Further, be provided with the second control chip U2 the first pin, second pin, the 3rd pin, the 4th pin,
5th pin, the 6th pin, the 7th pin and the 8th pin, first pin connect power supply circuit 22, the 3rd pin
Connecting valve signal deteching circuit 21, the 5th pin are connected by the 8th resistance R8 with mini light night auxiliary circuit 4, and described
Six pins by the PNP type triode Q6 of the 7th resistance R7 connections the 6th base stage, the 7th pin by the 6th resistance R6 with
Mini light night drive circuit 3 connects, the 8th pin ground connection.
It should be noted that switching on-off number and turn-off time will be recorded on the second control chip U2, for the first time
When switching folding, the 6th pin conducting on the second control chip U2, main drive circuit 5 works.During second of folding, the second control
The 7th pin conducting on coremaking piece U2, mini light night drive circuit 3 work.
The mini light night drive circuit 3 includes the 4th NPN type triode Q4, the 11st resistance R11 and the 3rd control chip
U3, the 4th NPN type triode Q4 base stage are connected with switch detection control circuit 2, the 4th NPN type triode Q4's
Grounded emitter, the colelctor electrode of the 4th NPN type triode Q4 are connected by the 11st resistance R11 and the 3rd control chip U3
Connect, the 3rd control chip U3 electrically connects with mini light night.The 3rd control chip U3 is preferably the linear chip of single hop.
It should be noted that the utility model detects the folding signal of 2 real-time detection switch of control circuit by switching
Count and produce corresponding control signal.Specifically, switch detection control electricity will be recorded in by switching on-off number and turn-off time
In road 2, when switch detection control circuit 2 judges switching signal to switch folding for the first time, main drive circuit 5 works, and opens
Open key lighting pattern；When switch detection control circuit 2 judges that switching signal switchs folding for second, mini light night driving electricity
Road 3 works, and opens mini light night pattern.
The 5th NPN type triode Q5 that the mini light night auxiliary circuit 4 includes being connected with each other, the 4th control chip U4, the
12 resistance R12, the 14th resistance R14, the 15th resistance R15, the 16th resistance R16 and the 4th voltage-regulator diode ZD4；It is described
5th NPN type triode Q5 base stage is connected with switch detection control circuit 2, the emitter stage of the 5th NPN type triode Q5
Ground connection；The colelctor electrode of the 5th NPN type triode Q5 is connected by the 12nd resistance R12 with the 15th resistance R15 one end,
The other end of the 15th resistance R15 is connected with the 4th control chip U4；The colelctor electrode of the 5th NPN type triode Q5 leads to
Cross the 12nd resistance R12 to be connected with the 16th resistance R16 one end, the other end of the 16th resistance R16 is respectively with the 4th
Control chip U4 and the 14th resistance R14 connections, the main drive circuit 5 of the 14th resistance R14 connections；5th NPN type
Triode Q5 colelctor electrode connects the 4th voltage-regulator diode ZD4 one end, another termination of the 4th voltage-regulator diode ZD4
Ground.The 4th control chip U4 is preferably the linear chip of single hop.
It should be noted that when mini light night drive circuit 3 is with main 5 switch operating of drive circuit, mini light night auxiliary circuit 4 can
According to cut depth adjustment operating current, to avoid mini light night drive circuit 3 and phase-cut dimming during main 5 switch operating of drive circuit
There is flashing light phenomenon in device operation irregularity, so as to solve light modulator flicker problem.
The main drive circuit 5 is key lighting compatibility phase-cut dimming, and it includes the first control chip U1, the first diode
D1, the second diode D2, the second electric capacity C2, the 3rd electric capacity C3, the 5th electric capacity C5, the 6th electric capacity C6, air core inductor L1, iron core electricity
Feel T1, the first startup resistance RS1, the second startup resistance RS2, the 18th resistance R18, the electricity of the first electrochemical capacitor CE1 and the 19th
Hinder R19；The 5th electric capacity C5, the 6th electric capacity C6, first start one end ground connection that resistance RS1 and second starts resistance RS2, separately
One end connects the first control chip U1；First diode D1, air core inductor L1 and the iron inductance T1 are sequentially connected in series；Described
Two electric capacity C2 one end are grounded, and the other end is connected between the first diode D1 and air core inductor L1；Described 3rd electric capacity C3 one end
Ground connection, the other end are connected between air core inductor L1 and iron inductance T1；The control of one end connection first of the 18th resistance R18
Coremaking piece U1, the other end are connected between air core inductor L1 and iron inductance T1；One end of the second diode D2 respectively with
Iron inductance T1 and the first control chip U1 connections, other end connection mini light night auxiliary circuit 4；The first electrochemical capacitor CE1
Positive pole connect the second diode D2 and mini light night drive circuit 3（Specifically, the first electrochemical capacitor CE1 positive pole connects small night
The 14th resistance R14 in lamp drive circuit 3）, negative pole ground connection；One end of the 19th resistance R19 connects the second diode
D2 and mini light night drive circuit 3, other end ground connection.
It should be noted that the utility model detects the folding signal of 2 real-time detection switch of control circuit by switching
Count and produce corresponding control signal.Specifically, switch detection control electricity will be recorded in by switching on-off number and turn-off time
In road 2, when switch detection control circuit 2 judges switching signal to switch folding for the first time, main drive circuit 5 works, and opens
Open key lighting pattern；When switch detection control circuit 2 judges that switching signal switchs folding for second, mini light night driving electricity
Road 3 works, and opens mini light night pattern.Preferably, the first control chip U1 is phase-cut dimming control chip, first control
Coremaking piece U1 and the circuit of periphery coordinate, can be compatible with controllable silicon dimmer well, realize non-pole light regulating effect.
The first pin is provided with the first control chip U1（HV）, second pin（SOURCED）, the 3rd pin
（VCC）, the 4th pin（NTC）, the 5th pin（DTDT）, the 6th pin（GND）, the 7th pin（GND）And the 8th pin
（DRAIN）；First pin（HV）It is connected with the 18th resistance R18, the second pin（SOURCED）Pass through first respectively
Start resistance RS1 and second and start resistance RS2 ground connection, the 3rd pin（VCC）It is grounded by the 5th electric capacity C5, the described 4th
Pin（NTC）It is grounded by the 6th electric capacity C6, the 6th pin（GND）And the 7th pin（GND）It is grounded respectively, it is described
8th pin（DRAIN）It is connected respectively with the second diode D2 and iron inductance T1.
From the foregoing, it will be observed that the utility model by input rectification circuit 1, switch detection control circuit 2, mini light night by driving electricity
Road 3, mini light night auxiliary circuit 4 and main drive circuit 5 are combined, and realize that small night lamp function and dimming function are perfectly combined, and are formed
A kind of be directly installed on light fixture can both be used as general lighting, can be used as the LED lamp of mini light night again, both avoided waste
Socket resource, it can also make room more attractive in appearance.
Specifically, switch detection control circuit 2 determines mode of operation by on-off times（Key lighting pattern, mini light night mould
Formula）, the power and energy of general lighting and mini light night can be effectively realized, can keep bright in sleep, make one unlikely when getting up
In feeling about in the dark；Meanwhile mini light night auxiliary circuit 4 solves the phase-cut dimming when key lighting pattern switching is into mini light night pattern well
There is the phenomenon of flashing light in device operation irregularity；In addition, the utility model can also connect light modulator（First in main drive circuit 5
Control chip U1）, the first control chip U1 and the circuit cooperation of periphery can realize phase-cut dimming function well, so as to form collection
General lighting, mini light night, three kinds of light modulation act on the integral phase-cut dimming LED circuit with small night lamp function, and people can root
Adjust the brightness of LED according to the hobby of oneself, just meet demand of the market to dimming LED lamp, so as to remove from choose it is small
The trouble of two kinds of light fixtures of night-light and dimming lamp；Correspondingly, diversified LED, there is the features such as manipulation is simple, and cost is low energy
Pole is beneficial to the design of light-adjustable LED lamp, production and popularization.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the scope of protection of the utility model.
Claims (10)
1. a kind of phase-cut dimming LED circuit with small night lamp function, it is characterised in that including input rectification circuit, switch detection
Control circuit, mini light night drive circuit, mini light night auxiliary circuit and main drive circuit, the output end point of the input rectification circuit
The input of other connecting valve detection control circuit and main drive circuit, the output end of the switch detection control circuit connect respectively
The input of mini light night drive circuit and mini light night auxiliary circuit is connect, the output end of the mini light night auxiliary circuit connects main driving
Circuit.
2. the phase-cut dimming LED circuit with small night lamp function as claimed in claim 1, it is characterised in that the input rectifying
Circuit includes rectifier bridge, piezo-resistance and fusing resistor, the output end difference connecting valve detection control circuit of the rectifier bridge
And main drive circuit, two inputs of the rectifier bridge are connected with the both ends of piezo-resistance respectively, the rectifier bridge and pressure-sensitive
One end of resistance connects the other end connection zero line of live wire, the rectifier bridge and piezo-resistance by fusing resistor.
3. the phase-cut dimming LED circuit with small night lamp function as claimed in claim 1, it is characterised in that the switch detection
Power supply circuit, switching signal detection circuit and control circuit, the power supply circuit that control circuit includes being electrically connected to each other are used for
Circuit and control circuit power supply are detected for switching signal, the switching signal detection circuit is used for the folding signal of detection switch,
The control circuit is used to generate control signal.
4. the phase-cut dimming LED circuit with small night lamp function as claimed in claim 3, it is characterised in that the power supply circuit
Including the 3rd NPN type triode, the 3rd voltage-regulator diode, the 5th resistance, the 11st electric capacity, the 12nd electric capacity and the second electrolysis electricity
Hold；
One end of 12nd electric capacity connects the emitter stage of the 3rd NPN type triode, other end ground connection；
The positive pole of second electrochemical capacitor connects the emitter stage and power supply of the 3rd NPN type triode, negative pole ground connection；
One end of 5th resistance is electric with switching signal detection circuit, the colelctor electrode of the 3rd NPN type triode and control respectively
Road connects, and the other end passes through the 11st capacity earth；
The positive pole of 3rd voltage-regulator diode base stage with the 5th resistance, the 11st electric capacity and the 3rd NPN type triode respectively
Connection, negative pole ground connection, the 3rd NPN type triode form mu balanced circuit with the 3rd voltage-regulator diode.
5. the phase-cut dimming LED circuit with small night lamp function as claimed in claim 3, it is characterised in that the switching signal
Detecting circuit includes the first voltage-regulator diode, the second voltage-regulator diode, the tenth electric capacity, the 3rd diode, first resistor, the second electricity
Resistance, 3rd resistor and the 4th resistance；
Tenth electric capacity and the 4th resistor coupled in parallel are to form anti-jamming circuit；
One end of the first resistor is connected with power supply circuit, another to pass through the 3rd diode, 3rd resistor and the first voltage stabilizing two
Pole pipe is connected with anti-jamming circuit；
One end of the second resistance is connected with anti-jamming circuit, and the other end is connected with control circuit and by the pole of the second voltage stabilizing two
Pipe is grounded to form overvoltage crowbar.
6. the phase-cut dimming LED circuit with small night lamp function as claimed in claim 3, it is characterised in that the control circuit
Including the second control chip, the 6th PNP type triode, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth electricity
Resistance, the 13rd resistance, the 17th resistance and N-MOS pipes;
Second control chip is connected by the 6th resistance with mini light night drive circuit, is aided in by the 8th resistance and mini light night
Circuit is connected, and the base stage of the 6th PNP type triode is connected by the 7th resistance, and the one of the 9th resistance is connected by the 17th resistance
End；
The other end of 9th resistance connects the grid of the emitter stage and N-MOS pipes of the 6th PNP type triode respectively, and passes through
Tenth resistance eutral grounding；
The 6th PNP type triode grounded collector, the source electrode of the N-MOS pipes and drain electrode are grounded respectively；
One end of 13rd resistance connects the base stage of the 6th PNP type triode, other end ground connection.
7. the phase-cut dimming LED circuit with small night lamp function as claimed in claim 1, it is characterised in that the mini light night drives
Dynamic circuit includes the 4th NPN type triode, the 11st resistance and the 3rd control chip, the base stage of the 4th NPN type triode
It is connected with switch detection control circuit, the grounded emitter of the 4th NPN type triode, the 4th NPN type triode
Colelctor electrode is connected by the 11st resistance with the 3rd control chip, and the 3rd control chip electrically connects with mini light night.
8. the phase-cut dimming LED circuit with small night lamp function as claimed in claim 1, it is characterised in that the mini light night is auxiliary
Help fiveth NPN type triode of the circuit including interconnection, the 4th control chip, the 12nd resistance, the 14th resistance, the 15th
Resistance, the 16th resistance and the 4th voltage-regulator diode；
The base stage of 5th NPN type triode is connected with switch detection control circuit, the transmitting of the 5th NPN type triode
Pole is grounded；
The colelctor electrode of 5th NPN type triode is connected by the 12nd resistance with one end of the 15th resistance, and the described tenth
The other end of five resistance is connected with the 4th control chip；
The colelctor electrode of 5th NPN type triode is connected by the 12nd resistance with one end of the 16th resistance, and the described tenth
The other end of six resistance is connected with the 4th control chip and the 14th resistance respectively, the main driving electricity of the 14th resistance connection
Road；
The colelctor electrode of 5th NPN type triode connects one end of the 4th voltage-regulator diode, the 4th voltage-regulator diode
The other end is grounded.
9. the phase-cut dimming LED circuit with small night lamp function as claimed in claim 1, it is characterised in that the main driving electricity
Road include the first control chip, the first diode, the second diode, the second electric capacity, the 3rd electric capacity, the 5th electric capacity, the 6th electric capacity,
Air core inductor, iron inductance, first start resistance, the second startup resistance, the 18th resistance, the first electrochemical capacitor and the 19th electricity
Resistance；
5th electric capacity, the 6th electric capacity, the first startup resistance and second start one end ground connection of resistance, other end connection first
Control chip；
First diode, air core inductor and the iron inductance are sequentially connected in series；
Second electric capacity one end ground connection, the other end are connected between the first diode and air core inductor；
3rd electric capacity one end ground connection, the other end are connected between air core inductor and iron inductance；
One end of 18th resistance connects the first control chip, and the other end is connected between air core inductor and iron inductance；
One end of second diode is connected with iron inductance and the first control chip respectively, other end connection mini light night auxiliary
Circuit；
The positive pole of first electrochemical capacitor connects the second diode and mini light night drive circuit, negative pole ground connection；
One end of 19th resistance connects the second diode and mini light night drive circuit, other end ground connection.
10. the phase-cut dimming LED circuit with small night lamp function as claimed in claim 9, it is characterised in that first control
Be provided with chip the first pin, second pin, the 3rd pin, the 4th pin, the 5th pin, the 6th pin, the 7th pin and
8th pin；
First pin is connected with the 18th resistance, and the second pin starts resistance and the second startup electricity by first respectively
Resistance ground connection, the 3rd pin pass through the 6th capacity earth, the 6th pin by the 5th capacity earth, the 4th pin
And the 7th pin is grounded respectively, the 8th pin is connected respectively with the second diode and iron inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720695961.8U CN207053839U (en) | 2017-06-15 | 2017-06-15 | A kind of phase-cut dimming LED circuit with small night lamp function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720695961.8U CN207053839U (en) | 2017-06-15 | 2017-06-15 | A kind of phase-cut dimming LED circuit with small night lamp function |
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| Publication Number | Publication Date |
|---|---|
| CN207053839U true CN207053839U (en) | 2018-02-27 |
Family
ID=61493891
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720695961.8U Active CN207053839U (en) | 2017-06-15 | 2017-06-15 | A kind of phase-cut dimming LED circuit with small night lamp function |
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| Country | Link |
|---|---|
| CN (1) | CN207053839U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241828A (en) * | 2017-06-15 | 2017-10-10 | 佛山电器照明股份有限公司 | A kind of phase-cut dimming LED circuit with small night lamp function |
| CN112543532A (en) * | 2020-12-15 | 2021-03-23 | 上海晶丰明源半导体股份有限公司 | Dimming control circuit and device thereof |
-
2017
- 2017-06-15 CN CN201720695961.8U patent/CN207053839U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241828A (en) * | 2017-06-15 | 2017-10-10 | 佛山电器照明股份有限公司 | A kind of phase-cut dimming LED circuit with small night lamp function |
| CN112543532A (en) * | 2020-12-15 | 2021-03-23 | 上海晶丰明源半导体股份有限公司 | Dimming control circuit and device thereof |
| CN112543532B (en) * | 2020-12-15 | 2023-09-26 | 上海晶丰明源半导体股份有限公司 | Dimming control circuit and device thereof |
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