CN107222951A - A kind of RC circuits and method for being used to improve LED lamp power factor - Google Patents
A kind of RC circuits and method for being used to improve LED lamp power factor Download PDFInfo
- Publication number
- CN107222951A CN107222951A CN201710599240.1A CN201710599240A CN107222951A CN 107222951 A CN107222951 A CN 107222951A CN 201710599240 A CN201710599240 A CN 201710599240A CN 107222951 A CN107222951 A CN 107222951A
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- voltage
- constant current
- led lamp
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of RC circuits for being used to improve LED lamp power factor, including power supply and zero phase intake circuit (1), control signal generation circuit (2), first controlled constant current circuit (3), second controlled constant current circuit (4) and LED lamp (5), wherein power supply and zero phase intake circuit (1) are control signal generation circuit (2), first controlled constant current circuit (3), second controlled constant current circuit (4) voltage different with LED lamp (5) offer and to control signal generation circuit (2) zero phase signal, control signal generation circuit (2) generates the luminance that two groups of different control signals control LED lamp (5) by the first controlled constant current circuit (3) and the second controlled constant current circuit (4) respectively.A kind of RC circuits for being used to improve LED lamp power factor that the present invention is provided, it is possible to increase the power factor of LED lamp, improve the life-span of LED and can effectively reduce the temperature of LED.
Description
Technical field
Circuit is controlled the present invention relates to a kind of LED, and in particular to a kind of RC electricity for being used to improve LED lamp power factor
Road.
Background technology
In LED lamp, performance, the quality of LED drivings are extremely important to the adaptation ability of pass, voltage, particularly medium and small
The LED lamp of power, had both required that low cost, price were excellent, and had had also been proposed many technical requirements.LED lamp is by lamp bead (light source), drive
The dynamic and part of shell three composition, wherein determining that quality, the quality of performance of LED lamp depend primarily on LED drivings.Outside by light fixture
The limitation of shell size, it is necessary to using the high driving of small volume, stability.The driving of the LED lamp of middle low power has resistance-capacitance depressurization
Formula, isolation constant current mode, non-isolated constant current mode etc..Capacitance-resistance step down type driving structure is simple, long lifespan, low cost, power factor are low
In 0.5, power is big with input voltage fluctuation；It is currently main flow to isolate constant current mode, the driving of non-isolated constant current mode, but cost is high,
Performance quality is closely related with circuit structure, and power factor increases cost the need for being less than 0.7, High Power Factor.
In recent years, there is problems with the LED lamp of middle low power：A, optical attenuation are serious；B, temperature are too high, filament lamp glass
Glass case temperature is up to 110 DEG C, and the temperature of internal LED filament is more than 130 DEG C, and optical attenuation is big；C, driving are easily damaged.
The content of the invention
The present invention be in order to overcome in the prior art LED lamp optical attenuation is serious in use, temperature is too high and drives
Dynamic fragile the problems such as, there is provided a kind of RC circuits for being used to improve LED lamp power factor, can effectively improve LED lamp
Power factor, improve the life-span of LED and the temperature of LED can be effectively reduced.
The present invention provides a kind of RC circuits for being used to improve LED lamp power factor, including：
Power supply absorbs circuit with zero phase：With LED lamp, the first controlled constant current circuit, control signal generation circuit and
Two controlled constant current circuits are connected, with four voltage output ends；Wherein first voltage output end is used to provide electricity for LED lamp
Pressure, second voltage output end provides voltage with for control signal generation circuit, and tertiary voltage output end is used to be the first controlled perseverance
Current circuit provides voltage, and the 4th voltage output end is used to provide voltage for the second controlled constant current circuit；
Control signal generation circuit：One end is absorbed circuit with power supply and zero phase by second voltage output end and is connected, its
Output end has two control signal outputs, and the first control signal output is connected with the first controlled constant current circuit, the second control
Signal output part processed is connected with the second controlled constant current circuit, for controlling the first controlled constant current circuit and the second controlled constant current circuit
Working condition；
First controlled constant current circuit：First voltage input absorbs electricity by first voltage output end and power supply with zero phase
Road be connected, the first control signal input is connected by the first signal control output end with control signal generation circuit, first by
The output end of control constant-current circuit is connected with LED lamp, the luminance for controlling LED lamp；
Second controlled constant current circuit：Second voltage input absorbs electricity by second voltage output end and power supply with zero phase
Road be connected, the second control signal input is connected by secondary signal control output end with control signal generation circuit, second by
The output end of control constant-current circuit is connected with LED lamp, the luminance for controlling LED lamp；
LED lamp：It is made up of two groups of LEDs being arranged in parallel, one end is connected with power supply with zero phase intake circuit, wherein
The other end of one group of LED is connected with the first controlled constant current circuit, the other end and the second controlled constant current circuit of another group of LED
It is connected.
A kind of RC circuits for being used to improve LED lamp power factor of the present invention, it is preferred that, power supply and zero
Phase intake circuit includes fuse, the first voltage-stablizer, the first rectifier bridge, the second rectifier bridge, the first diode, the two or two pole
Pipe, the first triode, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity,
8th electric capacity, the tenth electric capacity, dropping resistor, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th
Resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance, the 27th resistance,
28th resistance；Dropping resistor one end is connected by fuse with live wire, and the other end is connected with the positive pole of the first diode；The
The positive pole of one diode is connected by the first electric capacity and first resistor being arranged in parallel with the ac input end of the first rectifier bridge, the
The positive pole of one diode passes through the second electric capacity being arranged in parallel, second resistance, the 3rd electric capacity and 3rd resistor and the second rectifier bridge
Ac input end be connected, the negative pole of the first diode is connected by the 4th resistance with the base stage of the first triode；One or three pole
The base stage of pipe passes through the 5th resistance eutral grounding, the grounded emitter of the first triode, the colelctor electrode of the first triode and the 6th resistance
It is connected with zero phase output port；The output head anode of second rectifier bridge is connected with LED lamp, and the output of the second rectifier bridge is rectified
Pole is by the 4th capacity earth, the negative pole of output end ground connection of the first rectifier bridge and the second rectifier bridge, the output end of the first rectifier bridge
Positive pole is connected with the 27th resistance being arranged in parallel and the 28th resistance；The resistance of parallel resistance the 27th and the 28th
The other end of resistance is connected with the power input of the first controlled constant current circuit and the first voltage-stablizer, and the power supply of the first voltage-stablizer is defeated
Enter end with one end of the negative pole, the 5th electric capacity and the 6th electric capacity of the second diode to be connected, the positive pole of the second diode and the 5th electricity
Appearance is connected with the other end of the 6th electric capacity；The power output end of first voltage-stablizer passes through the 7th electric capacity being arranged in parallel and the 8th electricity
Hold ground connection, the power output end of the first voltage-stablizer passes through the 7th resistance being arranged in series, the 8th resistance, the 9th resistance, the tenth electricity
Resistance, the 11st resistance and the 12nd resistance eutral grounding；Tenth electric capacity, the 11st resistance and the 12nd resistance and the second controlled constant current electricity
Road is connected.
A kind of RC circuits for being used to improve LED lamp power factor of the present invention, it is preferred that, fuse is
Fast melting fuse；Second diode is voltage-regulator diode；First triode is NPN type；4th electric capacity, the 6th electric capacity, the 8th electricity
Hold for polarized electric capacity.
A kind of RC circuits for being used to improve LED lamp power factor of the present invention, it is preferred that, control signal
Generation circuit includes the second voltage-stablizer, the 9th electric capacity, the 14th electric capacity, the 29th resistance, the 30th resistance；Second voltage-stablizer
Provided with 8 ports, wherein No. 1 port and No. 8 ports and the 9th electric capacity are connected, No. 2 ports are connected with zero phase output port,
It is grounded after No. 3 ports and No. 4 ports are in parallel, No. 5 ports are connected with the second controlled constant current circuit, No. 6 ports and the first controlled perseverance
Current circuit is connected, and No. 7 ports are connected with the 14th electric capacity, the 29th resistance and the 30th resistance.
A kind of RC circuits for being used to improve LED lamp power factor of the present invention, it is preferred that, first is controlled
Constant-current circuit includes the first operational amplifier, the second triode, the first FET, the 11st electric capacity, the 12nd electric capacity, the tenth
Three resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 17th resistance, the 18th resistance, the 19th resistance, the 3rd
11 resistance；The in-phase input end of first operational amplifier is connected with tertiary voltage output end, the first operational amplifier it is anti-phase
Input is connected with the 12nd electric capacity and the 18th resistance, the output end of the first operational amplifier and the 16th resistance, the 17th
Resistance and the 19th resistance are connected, and the 19th resistance is connected with the 12nd electric capacity, the positive supply and negative electricity of the first operational amplifier
Source is connected respectively at the two ends of the 11st electric capacity；The G poles of first FET and the 16th resistance and the current collection of the second triode
Extremely it is connected, the S poles of the first FET are connected with the 14th resistance, the 15th resistance and the 18th resistance；First control signal
Input is connected with the 13rd resistance and the 31st resistance, the other end of the 13rd resistance and the base stage phase of the second triode
Even.
A kind of RC circuits for being used to improve LED lamp power factor of the present invention, it is preferred that, second is controlled
Constant-current circuit includes the second operational amplifier, the 3rd triode, the second FET, the 13rd electric capacity, the 20th resistance, second
11 resistance, the 22nd resistance, the 23rd resistance, the 24th resistance, the 25th resistance, the 26th resistance,
32 resistance；The in-phase input end of second operational amplifier is connected with the 4th voltage output end, the second operational amplifier it is anti-
Phase input is connected with the 13rd electric capacity and the 25th resistance, the output end of the second operational amplifier and the 23rd resistance,
24th resistance and the 26th resistance are connected, and the 26th resistance is connected with the 13rd electric capacity；The G poles of second FET
It is connected with the colelctor electrode of the 23rd resistance and the 3rd triode, S poles and the 21st resistance, the 20th of the second FET
Two resistance and the 25th resistance are connected；Second control signal input is connected with the 20th resistance and the 32nd resistance, the
The other end of 20 resistance is connected with the base stage of the 3rd triode.
A kind of RC circuits for being used to improve LED lamp power factor of the present invention, it is preferred that, the two or three pole
Pipe and the 3rd triode are NPN type；It is that the first FET and the second FET N ditches are enhanced.
The present invention in use, comprises the following steps：
S1, power supply and zero phase absorb the formation of circuit zero phase：Power supply passes through F1, R0, D3, R4, R5 after switching on power
The positive half cycle of 50Hz alternating current is added between triode Q5 base stage and emitter stage, with the changes in amplitude of alternating current,
Transistor collector generates the zero phase pulse with the alternating current same-phase of input, as shown in Figure 4；
The first via RC step-down rectifying circuits that S2, power supply are constituted via F1, R0, C1, R1, D1, form first via direct current,
Current limliting is depressured through R27, R28, by D4 voltage stabilizings, is filtered through C5, C6, obtains VCC burning voltages, provided for the first controlled constant current circuit
Voltage；VCC burning voltages provide electricity through U1 voltage stabilizings, C7, C8 filtering, the vdd voltage stablized for control signal generation circuit
Pressure；Vdd voltage passes through R7,8R, 9R, R10, R11, R12 partial pressure, obtains constant current reference voltage, is that the second controlled constant current circuit is carried
Voltage supplied；
S3, another road power supply through F1, R0 pass through C2, C3, R2, R3 resistance-capacitance depressurization, D2 rectifications, produce VOUT voltages, are
LED provides voltage；
S4, control signal generation circuit：Zero phase signal ZC is inputted the job initiation state for controlling U2, output end by P02
M1_CTRL and M2_CTRL control signal is controlled by ZC signals, under the control of ZC signals, can effectively change LED in pulse
Inverse peak voltage and negative peak electric current during work, protect LED not breakdown；AN0, AN1 export M1_CTRL and M2_CTRL signals, such as
Shown in Fig. 5；
S5, C14, R29, R30 constitute dimming input circuit, and the 0~10V analog voltages or pwm signal of light modulation are by AN4 ends
Input, controls M1_CTRL and M2_CTRL output amplitude, reaches the purpose of light modulation；
S6, the first controlled constant current circuit receive M1_CTRL signals, control first group of LED luminance；Second control constant current
Circuit receives M2_CTRL signals, controls second group of LED luminance.
The present invention can reach following technique effect：
1) signal of circuit is formed by zero phase, LED operation current phase is controlled so that the phase of LED operation electric current connects
It is bordering on input voltage phase, it is ensured that power factor (PF values) is more than 0.9.
2) using subitem control mode, it is ensured that LED junction temperature will not increase, thus it is possible to reduce by 30% or so LED
Junction temperature temperature.
3) multichannel light phase superimposing technique is used, LED light flux and light efficiency is improved.
Brief description of the drawings
Fig. 1 is a kind of RC circuit diagrams for being used to improve LED lamp power factor；
Fig. 2 is a kind of RC circuit composition figures for being used to improve LED lamp power factor；
Fig. 3 absorbs circuit composition figure for a kind of RC circuit powers for being used to improve LED lamp power factor with zero phase；
Fig. 4 is a kind of RC circuit control signal generation circuit composition figures for being used to improve LED lamp power factor；
Fig. 5 is a kind of RC circuits the first controlled constant current circuit composition figure for being used to improve LED lamp power factor；
Fig. 6 is a kind of RC circuits the second controlled constant current circuit composition figure for being used to improve LED lamp power factor；
Fig. 7 absorbs circuit output waveform for a kind of RC circuit powers for being used to improve LED lamp power factor with zero phase
With zero phase graph of a relation；
Fig. 8 is a kind of RC circuit control signal generation circuits work wave extension for being used to improve LED lamp power factor
Figure.
Reference：
1st, power supply and zero phase intake circuit；11st, first voltage output end；12nd, second voltage output end；13rd, the 3rd electricity
Press output end；14th, the 4th voltage output end；2nd, control signal generation circuit；21st, the first control signal output；22nd, the second control
Signal output part processed；3rd, the first controlled constant current circuit；31st, first voltage output end；32nd, the first control signal input；4th,
Two controlled constant current circuits composition figure；41st, second voltage output end；42nd, the second control signal input；5th, LED lamp.
Embodiment
Embodiment 1
As shown in Fig. 1~2, the present invention provides a kind of RC circuits for being used to improve LED lamp power factor, and its feature exists
In：Including：
Power supply absorbs circuit 1 with zero phase：With LED lamp 5, the first controlled constant current circuit 3, control signal generation circuit 2
It is connected with the second controlled constant current circuit 4, with four voltage output ends；Wherein first voltage output end 11 is used to be LED lamp 5
Voltage is provided, second voltage output end 12 provides voltage with for control signal generation circuit 2, and tertiary voltage output end 13 is for being
First controlled constant current circuit 3 provides voltage, and the 4th voltage output end 14 is used to provide voltage for the second controlled constant current circuit 4.
Power supply and zero phase absorb the circuit diagram of circuit 1 as shown in figure 3, R0 one end is connected by F1 with live wire, the other end
It is connected with D3 positive pole；D3 positive pole is connected by the C1 and R1 being arranged in parallel with D1 ac input end, and D3 positive pole passes through
C1, R1, C3 and the R3 being arranged in parallel are connected with D2 ac input end, and D3 negative pole is connected by R4 with Q5 base stage；Q5's
Base stage is grounded by R5, Q5 grounded emitter, and Q5 colelctor electrode is connected with R6 and zero phase output port；D2 output is rectified
Pole is connected with LED lamp 5, and D2 output head anode is grounded by C4, and D1 and D2 negative pole of output end ground connection, D1 output are rectified
Pole is connected with the R27 and R28 that are arranged in parallel；Parallel resistance R27 and the R28 other end and the first controlled constant current circuit 3 and U1
Power input is connected, and U1 power input is connected with D4 negative pole, C5 and C6 one end, and D4 positive pole is another with C5's and C6
One end is connected；U1 power output end is grounded by the C7 and C8 that are arranged in parallel, and U1 power output end is by being arranged in series
R7~R12 is grounded；C 10, R11 and R12 are connected with the second controlled constant current circuit 4.
Control signal generation circuit 2：One end the phase of circuit 1 is absorbed with power supply and zero phase by second voltage output end 12
Even, its output end has two control signal outputs, the first control signal output 21 and the phase of the first controlled constant current circuit 3
Even, the second control signal output 22 is connected with the second controlled constant current circuit 4, for the first controlled constant current circuit 3 of control and the
The working condition of two controlled constant current circuits 4.
The circuit diagram of control signal generation circuit 2 is as shown in figure 4, U2 is provided with 8 ports, wherein No. 1 port and No. 8 ports
With being connected for C9, No. 2 ports are connected with zero phase output port, No. 3 ports and No. 4 ports it is in parallel after be grounded, No. 5 ports and the
Two controlled constant current circuits 4 are connected, and No. 6 ports are connected with the first controlled constant current circuit 3, and No. 7 ports are connected with C14, R29 and R30.
First controlled constant current circuit 3：First voltage input 31 passes through the first voltage output end 11 and power supply and zero
Phase intake circuit 1 is connected, and the first control signal input 32 is produced by the first signal control output end 21 and control signal
Circuit 2 is connected, and the output end of the first controlled constant current circuit 3 is connected with LED lamp 5, the luminance for controlling LED lamp 5.
The circuit diagram of first controlled constant current circuit 3 is as shown in figure 5, U3A in-phase input end and tertiary voltage output end 13
It is connected, U3A inverting input is connected with C12 and R18, and U3A output end is connected with R16, R17 and R19, R19 and C12 phases
Even, U3A positive supply is connected with negative supply respectively at C11 two ends；Q1 G poles are connected with R16 and Q3 colelctor electrode, Q1 S
Pole is connected with R14, R15 and R18；First control signal input 21 is connected with R13 and R31, R13) the other end and Q3 base
Extremely it is connected.
Second controlled constant current circuit 4：Second voltage input 41 passes through second voltage output end 12 and power supply and zero phase
Absorb circuit 1 to be connected, the second control signal input 42 passes through secondary signal control output end 22 and control signal generation circuit 2
It is connected, the output end of the second controlled constant current circuit 4 is connected with LED lamp 5, the luminance for controlling LED lamp 5；
The circuit diagram of second controlled constant current circuit 4 is as shown in fig. 6, U3B in-phase input end and the 4th voltage output end 14
It is connected, U3B inverting input is connected with C12 and R25, and U3B output end is connected with R23, R24 and R26, R26 and C13 phases
Even；Q2 G poles are connected with R23 and Q4 colelctor electrode, and Q2 S poles are connected with R21, R22 and R25；Second control signal input
22 are connected with R20 and R32, and the R20 other end is connected with Q4 base stage.
LED lamp (5)：It is made up of two groups of LEDs being arranged in parallel, circuit is absorbed in one end with the power supply with zero phase
(1) be connected, the other end of one of which LED is connected with the first controlled constant current circuit (3), another group of LED it is another
End is connected with the second controlled constant current circuit (4).
The present embodiment in use, comprises the following steps：
S1, power supply and zero phase absorb the formation of circuit zero phase：Power supply passes through F1, R0, D3, R4, R5 after switching on power
The positive half cycle of 50Hz alternating current is added between triode Q5 base stage and emitter stage, with the changes in amplitude of alternating current,
Transistor collector generates the zero phase pulse with the alternating current same-phase of input, as shown in Figure 4；
The first via RC step-down rectifying circuits that S2, power supply are constituted via F1, R0, C1, R1, D1, form first via direct current,
Current limliting is depressured through R27, R28, by D4 voltage stabilizings, is filtered through C5, C6, obtains 12V VCC burning voltages, is the first controlled constant current electricity
Road provides voltage；12V voltages are filtered through U1 voltage stabilizings, C7, C8, and the 5V stablized vdd voltage is control signal generation circuit
Voltage is provided；5V voltage R7,8R, 9R, R10, R11, R12 partial pressures, obtain 500mV constant current reference voltage, are the second controlled perseverance
Current circuit provides voltage；
S3, another road power supply through F1, R0 pass through C2, C3, R2, R3 resistance-capacitance depressurization, D2 rectifications, produce VOUT voltages, are
LED provides voltage；Wherein C2, C3 can be adjusted according to the requirement of LED light source power and electric current；C2, C3 are using electrodeless
Property electric capacity, without high-voltage electrolytic capacitor, safety patch capacitor can also be used, therefore small volume, long lifespan, reliability increase；
S4, control signal generation circuit：Zero phase signal ZC is inputted the job initiation state for controlling U2, output end by P02
M1_CTRL and M2_CTRL control signal is controlled by ZC signals, under the control of ZC signals, can effectively change LED in pulse
Inverse peak voltage and negative peak electric current during work, protect LED not breakdown；AN0, AN1 export M1_CTRL and M2_CTRL signals, such as
Shown in Fig. 5, working frequency when LED is lighted is 1000Hz, in every 1ms time, it is divided into three groups of work, phase is
120 °, the first via and second group of working time are 600us, and the 3rd group is not involved in work, and then the first via and the second road are equal
Work and pulse condition, its dutycycle very little, the people that is not added with the 3rd tunnel work, it is ensured that the gap of the first via and the second paths of LEDs
Time, so will not increasing for LED junction temperature is ensure that, thus it is possible to reduce by 30% or so LED junction temperature temperature；
S5, C14, R29, R30 constitute dimming input circuit, and the 0~10V analog voltages or pwm signal of light modulation are by AN4 ends
Input, controls M1_CTRL and M2_CTRL output amplitude, reaches the purpose of light modulation；
S6, the first controlled constant current circuit receive M1_CTRL signals, control first group of LED luminance；Second control constant current
Circuit receives M2_CTRL signals, controls second group of LED luminance.
Illustrate to be merely exemplary for the purpose of the present invention, and it is nonrestrictive, and those of ordinary skill in the art understand, not
In the case of departing from the spirit and scope that claim is limited, any modification, change or the equivalents that can be made will all fall
Enter within the protection domain of invention.
Claims (8)
1. a kind of RC circuits for being used to improve LED lamp power factor, it is characterised in that：Including：
Power supply and zero phase intake circuit (1)：With LED lamp (5), the first controlled constant current circuit (3), control signal generation circuit
(2) it is connected with the second controlled constant current circuit (4), with four voltage output ends；Wherein first voltage output end (11) is for being
The LED lamp (5) provides voltage, and second voltage output end (12) provides voltage with for the control signal generation circuit (2),
Tertiary voltage output end (13) is used to provide voltage for the first controlled constant current circuit (3), and the 4th voltage output end (14) is used
In for the second controlled constant current circuit (4) provide voltage；
Control signal generation circuit (2)：Absorbed by the second voltage output end (12) and the power supply with zero phase one end
Circuit (1) is connected, and its output end has two control signal outputs, the first control signal output (21) with described first by
Control constant-current circuit (3) to be connected, the second control signal output (22) is connected with the second controlled constant current circuit (4), for controlling
Make the working condition of the first controlled constant current circuit (3) and the second controlled constant current circuit (4)；
First controlled constant current circuit (3)：First voltage input (31) passes through the first voltage output end (11) and the electricity
Source is connected with zero phase intake circuit (1), and the first control signal input (32) passes through the first signal control output end
(21) it is connected with the control signal generation circuit (2), output end and the LED lamp (5) of the first controlled constant current circuit (3)
It is connected, the luminance for controlling LED lamp (5)；
Second controlled constant current circuit (4)：Second voltage input (41) passes through the second voltage output end (12) and the electricity
Source is connected with zero phase intake circuit (1), and the second control signal input (42) passes through the secondary signal control output end
(22) it is connected with the control signal generation circuit (2), output end and the LED lamp (5) of the second controlled constant current circuit (4)
It is connected, the luminance for controlling LED lamp (5)；
LED lamp (5)：It is made up of two groups of LEDs being arranged in parallel, circuit (1) phase is absorbed in one end with the power supply and zero phase
Even, the other end of one of which LED is connected with the first controlled constant current circuit (3), the other end of another group of LED and institute
The second controlled constant current circuit (4) is stated to be connected.
2. a kind of RC circuits for being used to improve LED lamp power factor according to claim 1, it is characterised in that：It is described
Power supply includes fuse (F1), the first voltage-stablizer (U1), the first rectifier bridge (D1), the second rectification with zero phase intake circuit (1)
Bridge (D2), the first diode (D3), the second diode (D4), the first triode (Q5), the first electric capacity (C1), the second electric capacity
(C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), the 5th electric capacity (C5), the 6th electric capacity (C6), the 7th electric capacity (C7), the 8th electricity
Hold (C8), the tenth electric capacity (C10), dropping resistor (R0), first resistor (R1), second resistance (R2), 3rd resistor (R3), the 4th
Resistance (R4), the 5th resistance (R5), the 6th resistance (R6), the 7th resistance (R7), the 8th resistance (R8), the 9th resistance (R9),
Ten resistance (R10), the 11st resistance (R11), the 12nd resistance (R12), the 27th resistance (R27), the 28th resistance
(R28)；Described dropping resistor (R0) one end is connected by the fuse (F1) with live wire, the other end and first diode
(D3) positive pole is connected；The positive pole of first diode (D3) passes through first electric capacity (C1) being arranged in parallel and described
One resistance (R1) is connected with the ac input end of first rectifier bridge (D1), and the positive pole of first diode (D3) passes through simultaneously
Join second electric capacity (C1), the second resistance (R1), the 3rd electric capacity (C3) and the 3rd resistor (R3) set
It is connected with the ac input end of second rectifier bridge (D2), the negative pole of first diode (D3) passes through the 4th resistance
(R4) base stage with first triode (Q5) is connected；The base stage of first triode (Q5) passes through the 5th resistance
(R5) it is grounded, the grounded emitter of first triode (Q5), the colelctor electrode and the described 6th of first triode (Q5)
Resistance (R6) is connected with zero phase output port；The output head anode of second rectifier bridge (D2) is connected with LED lamp (5),
The output head anode of second rectifier bridge (D2) is grounded by the 4th electric capacity (C4), first rectifier bridge (D1) and institute
State the negative pole of output end ground connection of the second rectifier bridge (D2), the output head anode of first rectifier bridge (D1) and the institute being arranged in parallel
The 27th resistance (R27) is stated with the 28th resistance (R28) to be connected；27th resistance (R27) described in parallel resistance
With the other end and the first controlled constant current circuit (3) and first voltage-stablizer (U1) of the 28th resistance (R28)
Power input be connected, the negative pole of the power input of first voltage-stablizer (U1) and second diode (D4), institute
State the 5th electric capacity (C5) with one end of the 6th electric capacity (C6) to be connected, the positive pole and the described 5th of second diode (D4)
Electric capacity (C5) is connected with the other end of the 6th electric capacity (C6)；The power output end of first voltage-stablizer (U1) passes through parallel connection
The 7th electric capacity (C7) set and the 8th electric capacity (C8) ground connection, the power output end of first voltage-stablizer (U1) lead to
Cross the 7th resistance (R7) being arranged in series, the 8th resistance (R8), the 9th resistance (R9), the tenth resistance
(R10), the 11st resistance (R11) and the 12nd resistance (R12) ground connection；Tenth electric capacity (C10), the described tenth
One resistance (R11) and the 12nd resistance (R12) are connected with the second controlled constant current circuit (4).
3. a kind of RC circuits for being used to improve LED lamp power factor according to claim 2, it is characterised in that：It is described
Fuse (F1) is fast melting fuse；Second diode (D4) is voltage-regulator diode；First triode (Q5) is NPN
Type；4th electric capacity (C4), the 6th electric capacity (C6), the 8th electric capacity (C8) are polarized electric capacity.
4. a kind of RC circuits for being used to improve LED lamp power factor according to claim 1, it is characterised in that：It is described
Control signal generation circuit (2) includes the second voltage-stablizer (U2), the 9th electric capacity (C9), the 14th electric capacity (C14), the 29th electricity
Hinder (R29), the 30th resistance (R30)；Second voltage-stablizer (U2) provided with 8 ports, wherein No. 1 port and No. 8 ports with
9th electric capacity (C9) is connected, and No. 2 ports are connected with the zero phase output port, behind No. 3 ports and the parallel connections of No. 4 ports
Ground connection, No. 5 ports are connected with the second controlled constant current circuit (4), No. 6 ports and the first controlled constant current circuit (3) phase
Even, No. 7 ports and the 14th electric capacity (C14), the 29th resistance (R29) and the 30th resistance (R30) phase
Even.
5. a kind of RC circuits for being used to improve LED lamp power factor according to claim 1, it is characterised in that：It is described
First controlled constant current circuit (3) includes the first operational amplifier (U3A), the second triode (Q3), the first FET (Q1), the
11 electric capacity (C11), the 12nd electric capacity (C12), the 13rd resistance (R13), the 14th resistance (R14), the 15th resistance
(R15), the 16th resistance (R16), the 17th resistance (R17), the 18th resistance (R18), the 19th resistance (R19), the 30th
One resistance (R31)；The in-phase input end of first operational amplifier (U3A) is connected with the tertiary voltage output end (13),
The inverting input of first operational amplifier (U3A) and the 12nd electric capacity (C12) and the 18th resistance (R18)
It is connected, output end and the 16th resistance (R16), the 17th resistance (R17) of first operational amplifier (U3A)
It is connected with the 19th resistance (R19), the 19th resistance (R19) is connected with the 12nd electric capacity (C12), described
The positive supply of one operational amplifier (U3A) is connected with negative supply respectively at the two ends of the 11st electric capacity (C11)；Described first
The G poles of FET (Q1) are connected with the colelctor electrode of the 16th resistance (R16) and second triode (Q3), and described
The S poles of one FET (Q1) and the 14th resistance (R14), the 15th resistance (R15) and the 18th resistance
(R18) it is connected；First control signal input (21) and the 13rd resistance (R13) and the 31st resistance
(R31) it is connected, the other end of the 13rd resistance (R13) is connected with the base stage of second triode (Q3).
6. a kind of RC circuits for being used to improve LED lamp power factor according to claim 1, it is characterised in that：It is described
Second controlled constant current circuit (4) includes the second operational amplifier (U3B), the 3rd triode (Q4), the second FET (Q2), the
13 electric capacity (C13), the 20th resistance (R20), the 21st resistance (R21), the 22nd resistance (R22), the 23rd electricity
Hinder (R23), the 24th resistance (R24), the 25th resistance (R25), the 26th resistance (R26), the 32nd resistance
(R32)；The in-phase input end of second operational amplifier (U3B) is connected with the 4th voltage output end (14), and described
The inverting input of two operational amplifiers (U3B) and the 13rd electric capacity (C12) and the 25th resistance (R25) phase
Even, the output end of second operational amplifier (U3B) and the 23rd resistance (R23), the 24th resistance
(R24) it is connected with the 26th resistance (R26), the 26th resistance (R26) and the 13rd electric capacity (C13) phase
Even；The G poles of second FET (Q2) and the current collection of the 23rd resistance (R23) and the 3rd triode (Q4)
Extremely it is connected, S poles and the 21st resistance (R21), the 22nd resistance (R22) of second FET (Q2)
It is connected with the 25th resistance (R25)；Second control signal input (22) and the 20th resistance (R20) and
32nd resistance (R32) is connected, the other end of the 20th resistance (R20) and the base of the 3rd triode (Q4)
Extremely it is connected.
7. a kind of RC circuits for being used to improve LED lamp power factor according to any one of claim 5 or 6, it is special
Levy and be：Second triode (Q3) and the 3rd triode (Q4) are NPN type；It is described be the first FET (Q1) and
Second FET (Q2) the N ditches are enhanced.
8. a kind of RC circuits that LED lamp power factor is improved with being used for described in claim 1-7 any claims
Method, it is characterised in that：Comprise the steps,
S1, power supply and zero phase absorb the formation of circuit (1) zero phase：After switching on power power supply by the fuse (F1),
The dropping resistor (R0), first diode (D3), the 4th resistance (R4), the 5th resistance (R5) are by alternating current
Positive half cycle be added between the base stage of first triode (Q5) and emitter stage, with the changes in amplitude of alternating current, described
First triode (Q5) colelctor electrode generates the zero phase pulse with the alternating current same-phase of input；
S2, power supply are via the fuse (F1), the dropping resistor (R0), first electric capacity (C1), the first resistor
(R1), the first via RC step-down rectifying circuits of the first rectifier bridge (D1) composition, form first via direct current, through described second
17 resistance (R27), the 28th resistance (R28) decompression current limliting, by the second triode (D4) voltage stabilizing, through described the
Five electric capacity (C5), the 6th electric capacity (C6) filtering, obtain VCC burning voltages, are that the first controlled constant current circuit (3) provides electricity
Pressure；VCC burning voltages are through U1 voltage stabilizings, the 7th electric capacity (C7), the 8th electric capacity (C8) filtering, the VDD electricity stablized
Pressure, is that control signal generation circuit (2) provides voltage；Vdd voltage passes through the 7th resistance (R7), the 8th resistance
(R8), the 9th resistance (R9), the tenth resistance (R10), the 11st resistance (R11), the 12nd resistance
(R12) partial pressure, obtains constant current reference voltage, is that the second controlled constant current circuit (4) provides voltage；
S3, another road power supply through the F1 fuses (F1), the dropping resistor (R0) pass through second electric capacity (C2), institute
State the 3rd electric capacity (C3), the second resistance (R2), the 3rd resistor (R3) resistance-capacitance depressurization, second rectifier bridge (D2) whole
Stream, produces VOUT voltages, is that the LED lamp (5) provides voltage；
S4, control signal generation circuit (2)：Zero phase signal ZC is inputted the work for controlling second voltage-stablizer (U2) by P02
Initial state, the signal M1_CTRL and second control signal output of the first control signal output (21) output
(22) the signal M2_CTRL of output is controlled by ZC signals, can effectively change inverse peak voltages of the LED in pulsed operation and anti-
Peak current, protects LED not breakdown；
S5, the 14th electric capacity (C14), the 29th resistance (R29), the 30th resistance (R30) constitute tune
Light input circuit, the 0~10V analog voltages or pwm signal of light modulation are inputted by AN4 ends, control signal M1_CTRL and M2_CTRL
Output amplitude, reach the purpose of light modulation；
S6, the first controlled constant current circuit (3) receive M1_CTRL signals, control first group of LED luminance；Described
Two control constant-current circuits (4) receive M2_CTRL signals, control second group of LED luminance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710599240.1A CN107222951B (en) | 2017-07-21 | 2017-07-21 | It is a kind of for improving the RC circuit and method of LED lamp power factor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710599240.1A CN107222951B (en) | 2017-07-21 | 2017-07-21 | It is a kind of for improving the RC circuit and method of LED lamp power factor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107222951A true CN107222951A (en) | 2017-09-29 |
| CN107222951B CN107222951B (en) | 2019-02-05 |
Family
ID=59953756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710599240.1A Active CN107222951B (en) | 2017-07-21 | 2017-07-21 | It is a kind of for improving the RC circuit and method of LED lamp power factor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107222951B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202696969U (en) * | 2012-06-27 | 2013-01-23 | 上舜照明（中国）有限公司 | Light-emitting diode (LED) constant-current drive power supply capable of resisting alternating current (AC) voltage shocks |
| CN103155708A (en) * | 2010-07-15 | 2013-06-12 | 绿色照明概念公司 | Power integrated circuit for LED lighting |
| WO2015064775A1 (en) * | 2013-10-28 | 2015-05-07 | 정연문 | Power integrated circuit for led lighting |
| US20170019960A1 (en) * | 2015-07-14 | 2017-01-19 | The Hong Kong Polytechnic University | Multi-string led driver with current balancing |
| CN207219092U (en) * | 2017-07-21 | 2018-04-10 | 江苏丰特光电科技有限公司 | A kind of RC circuits for being used to improve LED lamp power factor |
-
2017
- 2017-07-21 CN CN201710599240.1A patent/CN107222951B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103155708A (en) * | 2010-07-15 | 2013-06-12 | 绿色照明概念公司 | Power integrated circuit for LED lighting |
| CN202696969U (en) * | 2012-06-27 | 2013-01-23 | 上舜照明（中国）有限公司 | Light-emitting diode (LED) constant-current drive power supply capable of resisting alternating current (AC) voltage shocks |
| WO2015064775A1 (en) * | 2013-10-28 | 2015-05-07 | 정연문 | Power integrated circuit for led lighting |
| US20170019960A1 (en) * | 2015-07-14 | 2017-01-19 | The Hong Kong Polytechnic University | Multi-string led driver with current balancing |
| CN207219092U (en) * | 2017-07-21 | 2018-04-10 | 江苏丰特光电科技有限公司 | A kind of RC circuits for being used to improve LED lamp power factor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107222951B (en) | 2019-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105744678B (en) | Electrochemical capacitor LED driver is gone based on PWM duty cycle control strategy | |
| CN104640322B (en) | The LED lamp tube driver of compatible electronic ballast | |
| CN101330785A (en) | High voltage AC light-adjusting controller for general constant-current LED | |
| CN105704867B (en) | Voltage control circuit, LED drive circuit and its control method | |
| CN105451409B (en) | The straight tube LED power of compatible inductance, electric ballast | |
| CN102014557A (en) | LED dimming power supply | |
| CN207219092U (en) | A kind of RC circuits for being used to improve LED lamp power factor | |
| CN108323247A (en) | Lamp tube drive circuit | |
| CN104968106B (en) | A kind of LED drive circuit of compatible high frequency electric ballast and low frequency input | |
| CN206585802U (en) | Low-voltage dimming power source | |
| CN106793346B (en) | Low-voltage dimming power source | |
| CN207070406U (en) | A kind of LED lamp zero phase forms circuit | |
| CN207219091U (en) | A kind of LED lamp controlled constant current circuit | |
| CN207070405U (en) | A kind of LED lamp zero phase absorbs circuit | |
| CN107197568A (en) | The driving power source system of LED intelligent lamps | |
| CN107222951B (en) | It is a kind of for improving the RC circuit and method of LED lamp power factor | |
| CN207884926U (en) | A kind of LED drive signal control circuit | |
| CN207884939U (en) | Lamp tube drive circuit | |
| CN207251959U (en) | A kind of LED lamp tube compatible circuit and LED lamp tube | |
| CN109831849A (en) | A kind of light modulation toning of analog signal is without stroboscopic LED drive circuit | |
| CN206226794U (en) | automobile lamp control device | |
| CN104918360B (en) | A kind of comprehensive protection circuit of LED power | |
| CN205491284U (en) | Permanent power LED power supply circuit system | |
| CN208210365U (en) | A kind of LED drive module | |
| CN202455634U (en) | Electronic ballast of electrodeless lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |