CN106211448A - A kind of quadravalence active power filtering type cold light LED energy-saving electric power - Google Patents
A kind of quadravalence active power filtering type cold light LED energy-saving electric power Download PDFInfo
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- CN106211448A CN106211448A CN201610581544.0A CN201610581544A CN106211448A CN 106211448 A CN106211448 A CN 106211448A CN 201610581544 A CN201610581544 A CN 201610581544A CN 106211448 A CN106211448 A CN 106211448A
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- 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]
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- 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]
- H05B45/40—Details of LED load circuits
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Abstract
The invention discloses a kind of quadravalence active power filtering type cold light LED energy-saving electric power, it is characterized in that, main by control chip U2, quadravalence active filter circuit, current detection circuit, diode rectifier U1, polar capacitor C1, N pole is connected with the VFB pin of control chip U2, the diode D3 that P pole is sequentially connected with the VCC pin of control chip U2 after resistance R6 through resistance R5, the field effect transistor being connected with OUT pin and the VREF pin of control chip U2 respectively triggers circuit, the VCC pin and the field effect transistor that are serially connected in control chip U2 trigger the constant current start-up circuit between circuit, and the variable frequency drive composition being connected with constant current start-up circuit.The present invention has stronger voltage endurance capability, can export stable electric current, effectively guarantee the stability of cold light LED lamp brightness.The energy consumption of the existing power circuit of observable index of the present invention reduces more than 55%.
Description
Technical field
The present invention relates to electric energy-saving field, specifically, be a kind of quadravalence active power filtering type cold light LED electricity-saving
Source.
Background technology
At present, due to LED have that energy consumption is low, the feature such as length in service life and safety and environmental protection, it has had become as people
One of the main product of life lighting.Owing to LED is different from traditional electric filament lamp, therefore it needs by special power supply electricity
Road is driven.But, the power circuit that current LED is used not only is easily subject to the impact of external voltage fluctuations, and
And its load capacity is poor, energy consumption is higher, it is impossible to controls output size of current, thus causes the brightness instability of LED, consumption
Electricity, service life short.
Therefore it provides one can improve load capacity, can ensure that again output controlled current flow, energy consumption can also be reduced simultaneously
LED power circuit is the task of top priority.
Summary of the invention
It is an object of the invention to overcome LED voltage circuit of the prior art to there is load capacity poor, energy consumption is higher,
Can not control export size of current defect, it is provided that a kind of quadravalence active power filtering type cold light LED energy-saving electric power.
The present invention is achieved through the following technical solutions: a kind of quadravalence active power filtering type cold light LED energy-saving electric power, mainly
By control chip U2, diode rectifier U1, negative pole is connected with the cathode output end of diode rectifier U1, positive pole and two poles
After the cathode output end of pipe commutator U1 is connected, polar capacitor C1, the N pole of ground connection is connected with the VFB pin of control chip U2
Connect, diode D3 that P pole is sequentially connected with the VCC pin of control chip U2 after resistance R6 through resistance R5, respectively with control
The field effect transistor that the OUT pin of chip U2 is connected with VREF pin triggers circuit, and the electric current being connected with control chip U2 is examined
Slowdown monitoring circuit, the VCC pin and the field effect transistor that are serially connected in control chip U2 trigger the constant current start-up circuit between circuit, open with constant current
The variable frequency drive that galvanic electricity road is connected, and the quadravalence active filter circuit composition being connected with variable frequency drive；Institute
State variable frequency drive to be connected with the VCC pin of control chip U2；The cathode output end of described diode rectifier U1 is with permanent
Stream start-up circuit is connected；The P pole of described diode D3 is connected with current detection circuit；The GND pipe of described control chip U2
Foot ground connection, its ISEN pin is connected with CT pin.
Described quadravalence active filter circuit by amplifier P1, amplifier P2, amplifier P3, amplifier P4, audion VT2,
Negative pole negative input with amplifier P1 after resistance R22 is connected, positive pole after resistance R24 with the outfan of amplifier P1
The polar capacitor C11 being connected, positive pole is connected with the electrode input end of amplifier P1, the negative pole of negative pole and polar capacitor C11
The input being collectively forming quadravalence active filter circuit polar capacitor C10, the N pole being connected with variable frequency drive are through resistance
The diode D9 that after R28, the base stage with audion VT2 is connected, P pole is connected with the positive pole of polar capacitor C11, negative pole with put
The polar capacitor C12 that electrode input end is connected, positive pole is connected with the P pole of diode D9 after resistance R27 of big device P4, just
Pole negative input with amplifier P3 after adjustable resistance R31 is connected, negative pole is connected with the negative input of amplifier P4
Polar capacitor C15, the N pole connect outfan with amplifier P1 after resistance R23 is connected, P pole after resistance R21 with amplifier
Diode D8, the P pole that the electrode input end of P1 is connected sequentially extremely is connected through resistance R29 N with diode D8 after resistance R25
Connect, diode D10 that N pole electrode input end with amplifier P3 after resistance R32 is connected, negative pole after resistance R30 with put
The polar capacitor C13 that big device P2 electrode input end is connected, positive pole outfan with amplifier P1 after resistance R26 is connected,
The polar capacitor C14 that negative pole is connected with the outfan of amplifier P4, positive pole is connected with the electrode input end of amplifier P4, with
And the inductance L4 composition that one end is connected with the P pole of diode D10, the other end is connected with the outfan of amplifier P4；Described
The outfan of amplifier P1 is connected with the electrode input end of amplifier P2；The emitter stage of described audion VT2 and amplifier P2
Outfan be connected；The outfan of described amplifier P2 is connected with the electrode input end of amplifier P3；Described amplifier P4
Electrode input end be connected with the colelctor electrode of audion VT2, its outfan is connected with the outfan of amplifier P3, puts simultaneously
The big negative input of device P4 and the outfan of amplifier P3 are collectively forming the outfan of quadravalence active filter circuit.
Described current detection circuit is connected with the COMP pin of control chip U2 by negative pole, the P of positive pole and diode D3
Polar capacitor C4, the P pole that pole is connected is connected with the COMP pin of control chip U2, N pole after resistance R7 with polar capacitor
The diode D4 that the positive pole of C4 is connected, positive pole is sequentially connected through resistance R9 ISEN pin with control chip U2 after resistance R8
Connect, polar capacitor C5 that negative pole is connected with the positive pole of polar capacitor C4, and one end is connected with the CT pin of control chip U2
Connect, resistance R10 that the other end is connected with the negative pole of polar capacitor C5 composition；The negative pole of described polar capacitor C5 respectively with control
The GND pin of chip U2 triggers ground connection after circuit is connected with field effect transistor.
Described field effect transistor triggers circuit by field effect transistor MOS, N pole after resistance R12 with the source electrode phase of field effect transistor MOS
The diode D5 that connection, P pole are connected with the VREF pin of control chip U2 after resistance R11, negative pole and field effect transistor MOS
Polar capacitor C6, P electrode resistance R16 that grid is connected, positive pole is connected with the OUT pin of control chip U2 after resistance R15
Be connected with the drain electrode of field effect transistor MOS afterwards, diode that N pole is connected with the source electrode of field effect transistor MOS after resistance R13
D6, and positive pole source electrode with field effect transistor MOS after resistance R14 is connected, negative pole is connected with the source electrode of field effect transistor MOS
Polar capacitor C7 composition；The source electrode of described field effect transistor MOS respectively with negative pole and the GND of control chip U2 of polar capacitor C5
Pin be connected after ground connection；The drain electrode of described field effect transistor MOS triggers the outfan of circuit as field effect transistor and opens with constant current
Galvanic electricity road is connected.
Described constant current start-up circuit is connected with the emitter stage of audion VT1 by audion VT1, N pole, P pole and field effect
The diode D2 that the drain electrode of pipe MOS is connected, positive pole colelctor electrode with audion VT1 after resistance R4 is connected, minus earth
Polar capacitor C3, N pole VCC pin with control chip U2 after resistance R2 be connected, P pole whole with diode after resistance R1
The diode D1 that is connected of cathode output end of stream device U1, and positive pole base stage with audion VT1 after resistance R3 is connected,
Outfan that negative pole is collectively forming constant current start-up circuit with the N pole of diode D2 the polarity electricity being connected with variable frequency drive
Hold C2 composition；The base stage of described audion VT1 is connected with the cathode output end of diode rectifier U1.
Described variable frequency drive by transformator T, positive pole non-with transformator T secondary inductance coil L3 after resistance R20
Same Name of Ends is connected, negative pole is sequentially connected through resistance R18 Same Name of Ends with transformator T secondary inductance coil L3 after resistance R17
Polar capacitor C9, the N pole connect is connected with the negative pole of polar capacitor C9, P pole after resistance R19 with transformator T secondary inductance line
The diode D7 that is connected of Same Name of Ends of circle L3, and negative pole is connected with the N pole of diode D7, positive pole and transformator T secondary
The polar capacitor C8 composition that the Same Name of Ends of inductance coil L3 is connected；The Same Name of Ends of described transformator T former limit inductance coil L1 with
The negative pole of polar capacitor C2 is connected, and the non-same polarity of its inductance coil L1 is connected with the N pole of diode D2；Described transformator
The Same Name of Ends of T former limit inductance coil L2 is connected with the VCC pin of control chip U2, and the non-same polarity of its inductance coil L2 connects
Ground；The N pole of described diode D7 is connected with the negative pole of polar capacitor C10；Described transformator T secondary inductance coil L3's is of the same name
End negative pole with polar capacitor C11 after resistance R17 is connected.
For the practical effect of the present invention, it is real that described control chip U2 the most preferentially uses the integrated chip of UC3843AN
Existing.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) present invention has stronger load capacity, can regulate output electric current accurately, and the present invention can also simultaneously
Eliminate the harmonic wave in electric current, and the vibration frequency of the output electric current of the present invention is less than the 5%～8% of reference frequency, thus this
Invention effectively guarantees the stability of cold light LED lamp brightness.
(2) energy consumption of the present invention is low, and the energy consumption of the existing power circuit of its observable index reduces more than 60%, thus it is born
Loading capability improves more than 70% than the load capacity of existing LED power circuit, and the present invention can provide for many LED simultaneously
Stable operating current.
(3) one power frequency can be converted to another kind power frequency according to the situation of the required electric current of load by the present invention,
Effectively guarantee that LED can keep stable brightness under different quantity.
(4) service life that can effectively extend LED of the present invention, the electricity of more than 50% can be saved simultaneously, thus full
Foot people to LED control system in the demand of energy-conservation aspect.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the quadravalence active filter circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U2, diode rectifier U1, resistance R5, resistance R6, polarity electricity
Appearance C1, diode D3, quadravalence active filter circuit, constant current start-up circuit, field effect transistor triggering circuit, current detection circuit, with
And variable frequency drive composition.
Wherein, the negative pole of polar capacitor C1 be connected with the cathode output end of diode rectifier U1, positive pole and diode
The cathode output end of commutator U1 be connected after ground connection.The N pole of diode D3 is connected with the VFB pin of control chip U2, P pole
Sequentially it is connected through resistance R5 VCC pin with control chip U2 after resistance R6.Field effect transistor trigger circuit the most respectively with control
The OUT pin of coremaking sheet U2 is connected with VREF pin.Current detection circuit is connected with control chip U2.Constant current start-up circuit
The VCC pin and the field effect transistor that are serially connected in control chip U2 trigger between circuit.Variable frequency drive and constant current start-up circuit phase
Connect.Quadravalence active filter circuit is connected with variable frequency drive.
Described variable frequency drive is connected with the VCC pin of control chip U2；The positive pole of described diode rectifier U1
Outfan is connected with constant current start-up circuit；The P pole of described diode D3 is connected with current detection circuit；Described control chip
The GND pin ground connection of U2, its ISEN pin is connected with CT pin.
Further, described current detection circuit is by resistance R7, resistance R8, resistance R9, resistance R10, polar capacitor C4, pole
Property electric capacity C5, and diode D4 composition.
During connection, the negative pole of polar capacitor C4 is connected with the COMP pin of control chip U2, the P of positive pole and diode D3
Pole is connected.The P pole of diode D4 is connected with the COMP pin of control chip U2, N pole after resistance R7 with polar capacitor C4
Positive pole be connected.The positive pole of polar capacitor C5 is sequentially connected through resistance R9 ISEN pin with control chip U2 after resistance R8
Connect, negative pole is connected with the positive pole of polar capacitor C4.Resistance R10 one end is connected with the CT pin of control chip U2, the other end
It is connected with the negative pole of polar capacitor C5.The negative pole of described polar capacitor C5 respectively with the GND pin of control chip U2 and field effect
Ground connection after circuit is connected should be triggered by pipe.
Wherein, described field effect transistor triggers circuit by field effect transistor MOS, resistance R11, resistance R12, resistance R13, resistance
R14, resistance R15, resistance R16, polar capacitor C6, polar capacitor C7, diode D5, and diode D6 form.
During connection, the N pole of diode D5 source electrode with field effect transistor MOS after resistance R12 is connected, P pole is through resistance R11
It is connected with the VREF pin of control chip U2 afterwards.The negative pole of polar capacitor C6 is connected with the grid of field effect transistor MOS, positive pole
After resistance R15, the OUT pin with control chip U2 is connected.With field effect transistor MOS after P electrode resistance R16 of diode D6
Drain electrode is connected, N pole source electrode with field effect transistor MOS after resistance R13 is connected.The positive pole of polar capacitor C7 is through resistance R14
Be connected with the source electrode of field effect transistor MOS afterwards, negative pole is connected with the source electrode of field effect transistor MOS.
The source electrode of described field effect transistor MOS is connected with the negative pole of polar capacitor C5 and the GND pin of control chip U2 respectively
Connect rear ground connection；Described field effect transistor MOS drain electrode as field effect transistor trigger circuit outfan and with constant current start-up circuit phase
Connect.
Further, described constant current start-up circuit is by audion VT1, resistance R1, resistance R2, resistance R3, resistance R4, pole
Property electric capacity C2, polar capacitor C3, diode D1, and diode D2 composition.
During connection, the N pole of diode D2 is connected with the emitter stage of audion VT1, the drain electrode of P pole and field effect transistor MOS
It is connected.The positive pole of polar capacitor C3 colelctor electrode with audion VT1 after resistance R4 is connected, minus earth.Diode D1
N pole VCC pin with control chip U2 after resistance R2 be connected, P pole after resistance R1 with diode rectifier U1 just
Pole outfan is connected.The positive pole of polar capacitor C2 base stage with audion VT1 after resistance R3 is connected, negative pole and diode
The N pole of D2 is collectively forming the outfan of constant current start-up circuit and is connected with variable frequency drive.The base stage of described audion VT1
It is connected with the cathode output end of diode rectifier U1.
Meanwhile, described variable frequency drive is by transformator T, resistance R17, resistance R18, resistance R19, resistance R20, polarity electricity
Hold C8, polar capacitor C9, and diode D7 composition.
During connection, the positive pole of polar capacitor C9 after resistance R20 with the non-same polarity phase of transformator T secondary inductance coil L3
Connect, negative pole is sequentially connected through resistance R18 Same Name of Ends with transformator T secondary inductance coil L3 after resistance R17.Diode
The N pole of D7 is connected with the negative pole of polar capacitor C9, P pole after resistance R19 with the Same Name of Ends of transformator T secondary inductance coil L3
It is connected.The negative pole of polar capacitor C8 is connected with the N pole of diode D7, positive pole is same with transformator T secondary inductance coil L3's
Name end is connected.
The Same Name of Ends of described transformator T former limit inductance coil L1 is connected with the negative pole of polar capacitor C2, its inductance coil
The non-same polarity of L1 is connected with the N pole of diode D2；The Same Name of Ends of described transformator T former limit inductance coil L2 and control chip
The VCC pin of U2 is connected, the non-same polarity ground connection of its inductance coil L2；The N pole of described diode D7 is with polar capacitor C10's
Negative pole is connected；The Same Name of Ends of described transformator T secondary inductance coil L3 after resistance R17 with the negative pole phase of polar capacitor C11
Connect.
As in figure 2 it is shown, described quadravalence active filter circuit is by amplifier P1, amplifier P2, amplifier P3, amplifier P4,
Audion VT2, resistance R21, resistance R22, resistance R23, resistance R24, resistance R25, resistance R26, resistance R27, resistance R28, electricity
Resistance R29, resistance R30, adjustable resistance R31, resistance R32, polar capacitor C10, polar capacitor C11, polar capacitor C12, polarity electricity
Hold C13, polar capacitor C14, polar capacitor C15, diode D8, diode D9, diode D10, and inductance L4 composition.
During connection, the negative pole of polar capacitor C11 negative input with amplifier P1 after resistance R22 is connected, positive pole
After resistance R24, the outfan with amplifier P1 is connected.The electrode input end phase of the positive pole of polar capacitor C10 and amplifier P1
The negative pole of connection, negative pole and polar capacitor C11 is collectively forming input and the variable frequency drive of quadravalence active filter circuit
It is connected.The N pole of diode D9 base stage with audion VT2 after resistance R28 is connected, the positive pole of P pole and polar capacitor C11
It is connected.
Wherein, the negative pole of polar capacitor C12 be connected with the electrode input end of amplifier P4, positive pole after resistance R27 with
The P pole of diode D9 is connected.The positive pole of polar capacitor C15 after adjustable resistance R31 with the negative input phase of amplifier P3
Connect, negative pole is connected with the negative input of amplifier P4.The N pole of diode D8 defeated with amplifier P1 after resistance R23
Go out that end is connected, P pole electrode input end with amplifier P1 after resistance R21 is connected.
Meanwhile, the P pole of diode D10 be sequentially connected through resistance R29 N pole with diode D8 after resistance R25, N pole
After resistance R32, the electrode input end with amplifier P3 is connected.The negative pole of polar capacitor C13 after resistance R30 with amplifier
P2 electrode input end is connected, positive pole outfan with amplifier P1 after resistance R26 is connected.The negative pole of polar capacitor C14
Be connected with the outfan of amplifier P4, positive pole is connected with the electrode input end of amplifier P4.One end of inductance L4 and two poles
The P pole of pipe D10 is connected, the other end is connected with the outfan of amplifier P4.
The outfan of described amplifier P1 is connected with the electrode input end of amplifier P2；The transmitting of described audion VT2
Pole is connected with the outfan of amplifier P2；The outfan of described amplifier P2 is connected with the electrode input end of amplifier P3；
The electrode input end of described amplifier P4 is connected with the colelctor electrode of audion VT2, its outfan and the outfan of amplifier P3
Being connected, the negative input of amplifier P4 is collectively forming the defeated of quadravalence active filter circuit with the outfan of amplifier P3 simultaneously
Go out end.
During operation, the present invention has stronger load capacity, can regulate output electric current accurately, the present invention simultaneously
The harmonic wave in electric current can also be eliminated, and the vibration frequency of the output electric current of the present invention is less than the 5%～8% of reference frequency, from
And the present invention effectively guarantees the stability of cold light LED lamp brightness.The energy consumption of the present invention is low, the existing power circuit of its observable index
Energy consumption reduce more than 60%, thus its load capacity than the load capacity of existing LED power circuit improve 70% with
On, the present invention can provide stable operating current for many LED simultaneously.Meanwhile, the present invention can not only be according to the required electricity of load
One power frequency is converted to another kind of power frequency by the situation of stream, effectively guarantees that LED can under different quantity
Keep stable brightness；And, in the service life that can effectively extend LED of the present invention, the electricity of more than 50% can be saved simultaneously
Amount, thus meet people to LED control system in the demand of energy-conservation aspect.For the practical effect of the present invention, institute
Stating control chip U2 the most preferentially uses the integrated chip of UC3843AN to realize.
According to above-described embodiment, can well realize the present invention.
Claims (7)
1. a quadravalence active power filtering type cold light LED energy-saving electric power, it is characterised in that main by control chip U2, diode
Commutator U1, negative pole is connected with the cathode output end of diode rectifier U1, positive pole is defeated with the negative pole of diode rectifier U1
Go out polar capacitor C1, the N pole of ground connection after end is connected be connected with the VFB pin of control chip U2, P pole sequentially through resistance R5 and
The diode D3 being connected with the VCC pin of control chip U2 after resistance R6, respectively with OUT pin and the VREF of control chip U2
The field effect transistor that pin is connected triggers circuit, the current detection circuit being connected with control chip U2, is serially connected in control chip
The VCC pin of U2 and field effect transistor trigger the constant current start-up circuit between circuit, and the frequency conversion being connected with constant current start-up circuit is driven
Galvanic electricity road, and the quadravalence active filter circuit composition being connected with variable frequency drive；Described variable frequency drive and control
The VCC pin of chip U2 is connected；The cathode output end of described diode rectifier U1 is connected with constant current start-up circuit；Described
The P pole of diode D3 is connected with current detection circuit；The GND pin ground connection of described control chip U2, its ISEN pin and CT
Pin is connected.
A kind of quadravalence active power filtering type cold light LED energy-saving electric power the most according to claim 1, it is characterised in that described
Quadravalence active filter circuit is by amplifier P1, amplifier P2, amplifier P3, amplifier P4, audion VT2, and negative pole is through resistance R22
The polarity that negative input with amplifier P1 is connected afterwards, positive pole outfan with amplifier P1 after resistance R24 is connected
Electric capacity C11, positive pole is connected with the electrode input end of amplifier P1, negative pole is collectively forming quadravalence with the negative pole of polar capacitor C11
The input of active filter circuit polar capacitor C10, the N pole that is connected with variable frequency drive after resistance R28 with three poles
The positive pole of the diode D9 that the base stage of pipe VT2 is connected, P pole is connected with the positive pole of polar capacitor C11, negative pole and amplifier P4
The polar capacitor C12 that input is connected, positive pole is connected with the P pole of diode D9 after resistance R27, positive pole is through adjustable resistance
The polar capacitor that after R31, the negative input with amplifier P3 is connected, negative pole is connected with the negative input of amplifier P4
C15, N pole outfan with amplifier P1 after resistance R23 is connected, P pole positive pole with amplifier P1 after resistance R21 inputs
Diode D8, the P pole that is connected of end is sequentially connected through resistance R29 N pole with diode D8 after resistance R25, N pole is through resistance
The diode D10 that after R32, electrode input end with amplifier P3 is connected, negative pole is defeated with amplifier P2 positive pole after resistance R30
Enter the polar capacitor C13 that end is connected, positive pole outfan with amplifier P1 after resistance R26 is connected, negative pole and amplifier
The polar capacitor C14 that the outfan of P4 is connected, positive pole is connected with the electrode input end of amplifier P4, and one end and two poles
The inductance L4 composition that the P pole of pipe D10 is connected, the other end is connected with the outfan of amplifier P4；Described amplifier P1's is defeated
Go out end to be connected with the electrode input end of amplifier P2；The emitter stage of described audion VT2 is connected with the outfan of amplifier P2
Connect；The outfan of described amplifier P2 is connected with the electrode input end of amplifier P3；The electrode input end of described amplifier P4
Being connected with the colelctor electrode of audion VT2, its outfan is connected with the outfan of amplifier P3, simultaneously the negative pole of amplifier P4
The outfan of input and amplifier P3 is collectively forming the outfan of quadravalence active filter circuit.
A kind of quadravalence active power filtering type cold light LED energy-saving electric power the most according to claim 2, it is characterised in that described
The pole that current detection circuit is connected with the COMP pin of control chip U2 by negative pole, positive pole is connected with the P pole of diode D3
Property electric capacity C4, P pole is connected with the COMP pin of control chip U2, N pole positive pole with polar capacitor C4 after resistance R7 is connected
The diode D4 connect, positive pole is sequentially connected through resistance R9 ISEN pin with control chip U2 after resistance R8, negative pole and pole
Property electric capacity C4 the polar capacitor C5 that is connected of positive pole, and one end is connected with the CT pin of control chip U2, the other end with
The resistance R10 composition that the negative pole of polar capacitor C5 is connected；The negative pole of described polar capacitor C5 respectively with the GND of control chip U2
Pin triggers ground connection after circuit is connected with field effect transistor.
A kind of quadravalence active power filtering type cold light LED energy-saving electric power the most according to claim 3, it is characterised in that described
Field effect transistor triggers circuit by field effect transistor MOS, and N pole source electrode with field effect transistor MOS after resistance R12 is connected, P pole is through electricity
The diode D5 that is connected with the VREF pin of control chip U2 after resistance R11, negative pole is connected with the grid of field effect transistor MOS,
With field effect transistor after polar capacitor C6, P electrode resistance R16 that positive pole is connected with the OUT pin of control chip U2 after resistance R15
The diode D6 that the drain electrode of MOS is connected, N pole is connected with the source electrode of field effect transistor MOS after resistance R13, and positive pole warp
The polar capacitor C7 that after resistance R14, the source electrode with field effect transistor MOS is connected, negative pole is connected with the source electrode of field effect transistor MOS
Composition；After the source electrode of described field effect transistor MOS is connected with the negative pole of polar capacitor C5 and the GND pin of control chip U2 respectively
Ground connection；The drain electrode of described field effect transistor MOS triggers the outfan of circuit as field effect transistor and is connected with constant current start-up circuit.
A kind of quadravalence active power filtering type cold light LED energy-saving electric power the most according to claim 4, it is characterised in that described
Constant current start-up circuit is connected with the emitter stage of audion VT1 by audion VT1, N pole, the drain electrode phase of P pole and field effect transistor MOS
The diode D2 connected, positive pole colelctor electrode with audion VT1 after resistance R4 is connected, the polar capacitor C3, N of minus earth
Pole VCC pin with control chip U2 after resistance R2 is connected, P pole is defeated with the positive pole of diode rectifier U1 after resistance R1
Go out the diode D1 that is connected of end, and positive pole base stage with audion VT1 after resistance R3 is connected, negative pole and diode D2
The N pole outfan that is collectively forming constant current start-up circuit and the polar capacitor C2 composition that is connected with variable frequency drive；Described
The base stage of audion VT1 is connected with the cathode output end of diode rectifier U1.
A kind of quadravalence active power filtering type cold light LED energy-saving electric power the most according to claim 5, it is characterised in that described
Variable frequency drive by transformator T, positive pole non-same polarity with transformator T secondary inductance coil L3 after resistance R20 is connected,
The polar capacitor that negative pole is sequentially connected through resistance R18 Same Name of Ends with transformator T secondary inductance coil L3 after resistance R17
C9, N pole is connected with the negative pole of polar capacitor C9, P pole after resistance R19 with the Same Name of Ends of transformator T secondary inductance coil L3
The diode D7 being connected, and negative pole is connected with the N pole of diode D7, positive pole and transformator T secondary inductance coil L3
The polar capacitor C8 composition that Same Name of Ends is connected；The Same Name of Ends of described transformator T former limit inductance coil L1 is with polar capacitor C2's
Negative pole is connected, and the non-same polarity of its inductance coil L1 is connected with the N pole of diode D2；Described transformator T former limit inductor wire
The Same Name of Ends of circle L2 is connected with the VCC pin of control chip U2, the non-same polarity ground connection of its inductance coil L2；Described diode
The N pole of D7 is connected with the negative pole of polar capacitor C10；The Same Name of Ends of described transformator T secondary inductance coil L3 is after resistance R17
It is connected with the negative pole of polar capacitor C11.
A kind of quadravalence active power filtering type cold light LED energy-saving electric power the most according to claim 6, it is characterised in that described
Control chip U2 is the integrated chip of UC3843AN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610581544.0A CN106211448A (en) | 2016-07-21 | 2016-07-21 | A kind of quadravalence active power filtering type cold light LED energy-saving electric power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610581544.0A CN106211448A (en) | 2016-07-21 | 2016-07-21 | A kind of quadravalence active power filtering type cold light LED energy-saving electric power |
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