CN106851920A - A kind of tri-state frequency conversion LED power output power controlling circuit - Google Patents
A kind of tri-state frequency conversion LED power output power controlling circuit Download PDFInfo
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- CN106851920A CN106851920A CN201710145362.3A CN201710145362A CN106851920A CN 106851920 A CN106851920 A CN 106851920A CN 201710145362 A CN201710145362 A CN 201710145362A CN 106851920 A CN106851920 A CN 106851920A
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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]
- H05B45/10—Controlling the intensity of the light
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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
- 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]
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Abstract
The invention discloses a kind of tri-state frequency conversion LED power output power controlling circuit,Including VFC module,The VFC that VFC module is provided with for electrically connecting IC chip U1 in frequency conversion LED drive power rectifies pole LED+,The VFC end negative pole LED and control signal input LDRV and highlighted control signal input MDRV that turns on light for connecting outside central controller,VFC module includes that PWM occurs circuit,Variable frequency drive and photoelectrical coupler,There is turn on light control signal and the highlighted control signal that circuit is input into according to outside central controller in PWM,Change the dutycycle of output pwm signal,Adjust the power output of frequency conversion LED drive power,Run LED load low-power low-light level operation or high power high luminance,And the soft start that light is gradually changed can be realized,It is few with electronic component,Circuit structure is simple,Low production cost,The advantages of small power consumption.
Description
Technical field
The present invention relates to a kind of lighting decoration controlled frequency conversion LED power, particularly a kind of frequency conversion adjustment power LED power supply.
Background technology
How the LED street lamp enormous amount of urban road, reduced the energy consumption of street lamp in the case where effective lighting is provided
Through the great difficult problem as road lamp energy-saving transformation project.Current street lamp is typically using mode realities such as time control, light-operated or sensors
Existing energy-conservation, some street lamps also possess LAN or remote control function, but the driving circuit structure of these street lamps is complicated, is produced into
This height, failure is also high.
The content of the invention
In order to overcome the deficiencies in the prior art, a kind of electronic component of present invention offer is few, and circuit structure is simple, is produced into
This low, tri-state frequency conversion LED power output power controlling circuit of small power consumption.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of tri-state frequency conversion LED power output power controlling circuit, including VFC module, the VFC module are set
Have for connect the VFC of IC chip U1 in frequency conversion LED drive power rectify pole LED+, VFC end negative pole LED- and
The control signal input LDRV and highlighted control signal input MDRV that turns on light for connecting outside central controller, it is described to open
After lamp control signal input LDRV receives the control signal of turning on light of central controller transmission, the frequency conversion LED drive power
Low-power is exported, the LED load low-light level illumination being connected with frequency conversion LED drive power, the highlighted control signal input
After MDRV receives the highlighted control signal of central controller transmission, the frequency conversion LED drive power high-power output, LED bears
Carry highlight illumination.
The frequency conversion LED drive power be additionally provided with zero line side N, zero line L, ground terminal G, 12V output cathode end DC+ and
Negative pole end DC-.
The VFC module includes：
There is circuit in PWM：Including single-chip microcomputer U6, the control signal input LDRV that turns on light, highlighted control signal input
MDRV is connected with the input of the single-chip microcomputer U6, and the single-chip microcomputer U6 is provided with pwm signal output end.
Variable frequency drive：Including phase transition transistor.
Photoelectrical coupler U5：Input connects the pwm signal output end by resistance R11, and the output termination phase turns
Change the control end of transistor, and the resistance R11 and photoelectrical coupler U5 node and publicly between be connected with resistance
R36。
The highlighted control signal input MDRV is received N seconds after the highlighted control signal that central control system sends
Interior, the pwm signal of the pwm signal output end output gradually changes to high duty ratio by low duty ratio, drives the frequency conversion LED
Dynamic output power of power supply gradually rises；M seconds interior, the PWM of the pwm signal output end output after the highlighted control signal disappears
Signal gradually changes to low duty ratio by high duty ratio, makes the frequency conversion LED drive power power output gradually reduce to realize
Soft start.
The VSS terminations of the model PIC12F1822, the single-chip microcomputer U6 of the single-chip microcomputer U6 are publicly；The single-chip microcomputer
The RA0 ends of U6 point two-way, leads up to resistance R23 and meets power supply VCC, separately leads up to resistance R28 and connects publicly；The single-chip microcomputer
The RA1 ends of U6 point two-way, leads up to resistance R24 and meets power supply VCC, separately leads up to resistance R27 and connects publicly；The single-chip microcomputer
The PWM/RA2 of U6 is the pwm signal output end；The vdd terminal of the single-chip microcomputer U6 meets power supply VCC；The RA5 of the single-chip microcomputer U6
End point two-way, leads up to resistance R25 and connects publicly, and another road meets the highlighted control signal input MDRV；The monolithic
The RA4 ends of machine U6 point two-way, leads up to resistance R26 and connects publicly, and another road meets the control signal input LDRV that turns on light；
The RA3 ends of the single-chip microcomputer U6 point two-way, leads up to resistance R21 and meets power supply VCC, separately leads up to electric capacity C16 and connects publicly.
In the first circuit, powered using AC power AC；The phase transition transistor is PNP type triode Q1；Institute
State AC power AC and pass sequentially through the emitter stage that resistance R15, commutation diode D7 meet the triode Q1；The triode Q1's
Base stage point two-way, leads up to resistance R30 and meets the photoelectrical coupler U5, separately leads up to resistance R31 and connects the pole of the rectification two
The node of pipe D7 and the emitter stage of the triode Q1；The node of the commutation diode D7 and the emitter stage of the triode Q1
With publicly between be parallel with electric capacity EC2 and voltage-regulator diode Z1；The colelctor electrode of the triode Q1 has been sequentially connected in series resistance
R32, diode D4, resistance R33, resistance R34 and resistance R35, another termination of the resistance R35 is publicly；The resistance R34
The VFC is connect with the node of resistance R35 rectify pole LED+；The node of the resistance R32 and diode D4 with publicly it
Between be connected with voltage-regulator diode Z2；The node of the resistance R33 and resistance R34 and publicly between be connected with electric capacity C10；It is described
The node of resistance R34 and resistance R35 and publicly between be connected with electric capacity C9.
In second circuit, powered using AC power AC；The phase transition transistor is PNP type triode Q1, institute
State AC power AC and pass sequentially through the emitter stage that resistance R15, commutation diode D7 meet the triode Q1；The triode Q1's
Base stage point two-way, leads up to resistance R30 and meets the photoelectrical coupler U5, separately leads up to resistance R31 and connects the pole of the rectification two
The node of pipe D7 and the emitter stage of the triode Q1；The node of the commutation diode D7 and the emitter stage of the triode Q1
With publicly between be parallel with electric capacity EC2 and voltage-regulator diode Z1；The colelctor electrode of the triode Q1 and publicly between connect
The node for having the colelctor electrode of resistance R35, the resistance R35 and triode Q1 connects the VFC and rectifies pole LED+.
In the third circuit, powered using dc source DC；The phase transition transistor is PNP type triode Q1, institute
State the emitter stage that dc source DC meets the triode Q1 by resistance R15；The base stage of the triode Q1 point two-way, a-road-through
Cross resistance R30 and meet the photoelectrical coupler U5, separately lead up to the hair that resistance R31 meets the resistance R15 and the triode Q1
The node of emitter-base bandgap grading；The node of the emitter stage of the resistance R15 and the triode Q1 and publicly between be connected with the pole of voltage stabilizing two
Pipe Z1；The colelctor electrode of the triode Q1 has been sequentially connected in series resistance R32, diode D4, resistance R33, resistance R34 and resistance R35,
Another termination of the resistance R35 is publicly；The node of the resistance R34 and resistance R35 connects the VFC and rectifies pole LED
+；The node of the resistance R32 and diode D4 and publicly between be connected with voltage-regulator diode Z2；The resistance R33 and resistance
The node of R34 and publicly between be connected with electric capacity C10；The node of the resistance R34 and resistance R35 and publicly between connect
There is electric capacity C9.
The beneficial effects of the invention are as follows：Turn on light control signal input LDRV, height be connected with and circuit in PWM of the invention there is
There is turn on light control signal and the highlighted control that circuit is input into according to outside central controller in bright control signal input MDRV, PWM
Signal processed, changes the dutycycle of output pwm signal, adjusts the power output of frequency conversion LED drive power, makes LED load low-power
Low-light level operation or high power high luminance run, and can realize the soft start that light is gradually changed, few with electronic component,
Circuit structure is simple, low production cost, the advantages of small power consumption.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is circuit theory diagrams of the invention；
Fig. 2 is that PWM occurs circuit diagram；
Fig. 3 is the first implementation method circuit diagram of variable frequency drive；
Fig. 4 is second implementation method circuit diagram of variable frequency drive；
Fig. 5 is the third implementation method circuit diagram of variable frequency drive.
Specific embodiment
Referring to figs. 1 to Fig. 5, a kind of tri-state frequency conversion LED power output power controlling circuit（Tri-state refers to extinguishing, low-light level operation, height
Brightness runs three kinds of working conditions）, including VFC module, the VFC module is provided with for connecting frequency conversion LED
IC chip U1 in driving power supply（The model BP3318 of IC chip U1）VFC rectify pole LED+, VFC end negative pole
The LED- and control signal input LDRV and highlighted control signal input MDRV that turns on light for connecting outside central controller.
The frequency conversion LED drive power be additionally provided with zero line side N, zero line L, ground terminal G, 12V output cathode end DC+ and
Negative pole end DC-, zero line side N, zero line L are used to connect the zero line and live wire of civil power, and to connect protection ground wire, 12V is exported ground terminal G
Positive terminal DC+ and negative pole end DC-（Publicly）For outside equipment such as radar sensor, infrared sensor and shooting head lamp etc. are carried
For 12VDC working powers.
The VFC module includes that PWM occurs circuit, variable frequency drive and photoelectrical coupler U5.There is electricity in PWM
Road includes single-chip microcomputer U6, the control signal input LDRV that turns on light, highlighted control signal input MDRV and the single-chip microcomputer
The input of U6 is connected, and the single-chip microcomputer U6 is provided with pwm signal output end.Variable frequency drive includes phase transition crystal
Pipe, the phase difference that adjustment photoelectrical coupler U5 is produced, the VFC rectifies pole LED+ and the phase transition transistor
Output end is connected, and the VFC end negative pole LED- connects publicly.Photoelectrical coupler U5 inputs connect described by resistance R11
Pwm signal output end, the control end of the output termination phase transition transistor（The base stage of triode, the grid of FET
Pole）, and the resistance R11 and photoelectrical coupler U5 node and publicly between be connected with resistance R36.Resistance R11 is limited
Leakage resistance, resistance R36 is pull down resistor, and it is defeated to drag down photoelectrical coupler U5 in pwm signal disappearance and in the pwm signal low level period
Enter the voltage at end.
The VSS terminations of the model PIC12F1822, the single-chip microcomputer U6 of the single-chip microcomputer U6 are publicly；The single-chip microcomputer
The RA0 ends of U6 point two-way, leads up to resistance R23 and meets power supply VCC, separately leads up to resistance R28 and connects publicly；The single-chip microcomputer
The RA1 ends of U6 point two-way, leads up to resistance R24 and meets power supply VCC, separately leads up to resistance R27 and connects publicly；The single-chip microcomputer
The PWM/RA2 of U6 is the pwm signal output end；The vdd terminal of the single-chip microcomputer U6 meets power supply VCC；The RA5 of the single-chip microcomputer U6
End point two-way, leads up to resistance R25 and connects publicly, and another road meets the highlighted control signal input MDRV；The monolithic
The RA4 ends of machine U6 point two-way, leads up to resistance R26 and connects publicly, and another road meets the control signal input LDRV that turns on light；
The RA3 ends of the single-chip microcomputer U6 point two-way, leads up to resistance R21 and meets power supply VCC, separately leads up to electric capacity C16 and connects publicly
（A ends are connected with the A ends in Fig. 3 to Fig. 5 in Fig. 2）.
Power supply VCC is direct current 5V power supplys, and resistance R23, resistance R24 are pull-up resistor, resistance R27, resistance R28, resistance
R25, resistance R26 are pull down resistor, and resistance R21 and electric capacity C16 constitutes reset circuit.
The first implementation method of variable frequency drive is powered referring to Fig. 3 using AC power AC.The phase transition is brilliant
Body pipe is PNP type triode Q1, and the AC power AC passes sequentially through resistance R15, commutation diode D7 and meets the triode Q1
Emitter stage；The base stage of the triode Q1 point two-way, leads up to resistance R30 and meets the photoelectrical coupler U5, another a-road-through
Cross the node that resistance R31 meets the commutation diode D7 and the emitter stage of the triode Q1；The commutation diode D7 and institute
State the emitter stage of triode Q1 node and publicly between be parallel with electric capacity EC2 and voltage-regulator diode Z1；The triode Q1
Colelctor electrode be sequentially connected in series resistance R32, diode D4, resistance R33, resistance R34 and resistance R35, the resistance R35's is another
Termination is publicly；The node of the resistance R34 and resistance R35 connects the VFC and rectifies pole LED+；The resistance R32 and two
The node of pole pipe D4 and publicly between be connected with voltage-regulator diode Z2；The node of the resistance R33 and resistance R34 with publicly
Between be connected with electric capacity C10；The node of the resistance R34 and resistance R35 and publicly between be connected with electric capacity C9.
The 12V alternating currents of input by passing through commutation diode D7 rectifications again after resistance R15 current limlitings（Halfwave rectifier）, input
To the emitter stage of triode Q1, there is the input that the square-wave voltage that circuit produces is loaded into photoelectrical coupler U5 in PWM.Work as PWM
When the square-wave signal that circuit occurs is high level, the voltage of resistance R30 is pulled low, and triode Q1 saturation conductions, signal input is given
IC chip U1, frequency conversion LED drive power output current provides operating current to LED load, and LED load is lighted.When PWM occurs
When the square-wave signal of circuit is low level, triode Q1 cut-offs give IC chip U1, frequency conversion LED without high level pulse signal input
Driving power supply is also exported without electric current, and LED load is extinguished.Electric capacity EC2 is filter capacitor, voltage-regulator diode Z1, voltage-regulator diode
Z2 plays voltage-stabilizing protection effect to the voltage of triode Q1 both sides.Resistance R15, resistance R32 are current-limiting resistance, and diode D4 is played
Reverse isolation is acted on, and prevents load current, electric capacity C9, the electric current of electric capacity C10 from pouring in down a chimney, and resistance R33 and electric capacity C10 constitutes one-level product
Parallel circuit, resistance R34 and electric capacity C9 constitute second order product parallel circuit, and pwm signal is converted into linear DC signal, are believed by direct current
Number adjustment frequency conversion LED drive power power output.Resistance R35 is discharge resistance, after triode Q1 cut-offs, electric capacity C9, electricity
Hold C10 and resistance R35 and constitute discharge loop.
After the control signal input LDRV that turns on light receives the control signal of turning on light of central controller transmission, the change
Frequency LED drive power low-power is exported, LED load low-light level illumination, during the highlighted control signal input MDRV is received
After the highlighted control signal that centre controller sends, the frequency conversion LED drive power high-power output, LED load highlight illumination,
Control signal input of turning on light LDRV do not turn on light control signal be input into when, no matter whether highlighted control signal input MDRV receives
To highlighted control signal, the closing output of VFC module, LED load extinguishing.
Control signal of turning off the light is sent by central control system, realizes that daytime, LED load was extinguished, at dusk, center control system
System output is turned on light the peak hours/period that control signal go on a journey with highlighted control signal, LED load in people, highlight illumination, guarantee
Good brightness of illumination.After peak hours/period, central control system closes highlighted control signal（Highlighted control signal input
MDRV does not have signal input）, LED load low-light level illumination, saving power supply.
Work as sensor（Sensor is connected with central controller, at each street lamp etc.）Someone or object are detected at it
When search coverage range of motion or identification someone are in the range of its search coverage, the highlighted control letter of central control system output
Number, tri-state frequency conversion LED power outputs signal to IC chip U1, and IC chip U1 controls frequency conversion LED drive power high-power output,
LED load illumination highlights；When sensor detects people leaves its investigative range or object transfixion, central control system is closed
Highlighted control signal is closed, tri-state frequency conversion control circuit outputs signal to IC chip U1, IC chip U1 control frequency conversion LED drive powers
Low-power is exported, low-light level illumination.
The highlighted control signal input MDRV is received N seconds after the highlighted control signal that central control system sends
（It is 3 seconds in the present embodiment, can adjusts as needed）Interior, the pwm signal of the pwm signal output end output is gradually by low
Change in duty cycle gradually rises the frequency conversion LED drive power power output to high duty ratio；The highlighted control signal disappears
M seconds after mistake（It is 3 seconds in the present embodiment, can adjusts as needed）It is interior, the pwm signal of the pwm signal output end output
Low duty ratio is gradually changed to by high duty ratio, the frequency conversion LED drive power power output is gradually reduced, realize light by
The soft start of gradual change.
Second implementation method of variable frequency drive is powered referring to Fig. 4 using AC power AC, and the phase transition is brilliant
Body pipe is PNP type triode Q1, and the AC power AC passes sequentially through resistance R15, commutation diode D7 and meets the triode Q1
Emitter stage；The base stage of the triode Q1 point two-way, leads up to resistance R30 and meets the photoelectrical coupler U5, another a-road-through
Cross the node that resistance R31 meets the commutation diode D7 and the emitter stage of the triode Q1；The commutation diode D7 and institute
State the emitter stage of triode Q1 node and publicly between be parallel with electric capacity EC2 and voltage-regulator diode Z1；The triode Q1
Colelctor electrode and publicly between be connected with resistance R35, the resistance R35 and triode Q1 the node of colelctor electrode connect the change
Frequency control end positive pole LED+.
Second circuit is identical with the circuit operation principle of the first circuit, has simply lacked voltage-regulator diode Z2, by resistance
The one-level integrating circuit of R33 and electric capacity C10 compositions and the second order product parallel circuit being made up of resistance R34 and electric capacity C9, make circuit knot
Structure is simpler, but after omitting these circuits, its corresponding function also just disappears, and adapts to the direct controlled output power of pwm signal,
Can be selected according to the design requirement of product.
The third implementation method of variable frequency drive is powered referring to Fig. 5 using dc source DC；The phase transition is brilliant
Body pipe connects the emitter stage of the triode Q1 by resistance R15 for PNP type triode Q1, the dc source DC；Three pole
The base stage of pipe Q1 point two-way, leads up to resistance R30 and meets the photoelectrical coupler U5, separately leads up to resistance R31 and connects the electricity
Hinder the node of R15 and the emitter stage of the triode Q1；The node of the resistance R15 and the emitter stage of the triode Q1 with it is public
Voltage-regulator diode Z1 is connected between altogether；The colelctor electrode of the triode Q1 has been sequentially connected in series resistance R32, diode D4, electricity
Resistance R33, resistance R34 and resistance R35, another termination of the resistance R35 is publicly；The node of the resistance R34 and resistance R35
Connect the VFC and rectify pole LED+；The node of the resistance R32 and diode D4 and publicly between be connected with voltage stabilizing two
Pole pipe Z2；The node of the resistance R33 and resistance R34 and publicly between be connected with electric capacity C10；The resistance R34 and resistance
The node of R35 and publicly between be connected with electric capacity C9.
The operation principle of the third circuit is identical with the first circuit, due to being powered using dc source, also just eliminates
Commutation diode D7, electric capacity EC2.
There is turn on light control signal and the highlighted control letter that circuit is input into according to outside central controller in PWM of the invention
Number, change the dutycycle of output pwm signal, the power output of frequency conversion LED drive power is adjusted, make LED load low-power low bright
Degree operation or high power high luminance operation, and the soft start that light is gradually changed can be realized, circuit few with electronic component
The advantages of simple structure, low production cost, small power consumption.
Conventional phase transition transistor has NPN type triode, PNP type triode, N-type FET, p-type an effect at present
Should pipe etc., in the present invention, these transistors are operated under on off state, it is possible to use different types of Replacement of Electronic Components, specialty
The technical staff in field on the premise of the invention objective is not departed from, the electronic component or circuit that are done directly replace or
Equivalent variations, still fall within the scope of the invention covers.
Claims (8)
1. a kind of tri-state frequency conversion LED power output power controlling circuit, it is characterised in that it includes VFC module, the change
The VFC that frequency control module is provided with for connecting IC chip U1 in frequency conversion LED drive power rectifies pole LED+, frequency conversion control
Negative pole LED- in end processed and for connect outside central controller turn on light control signal input LDRV and highlighted control signal it is defeated
Enter and hold MDRV, it is described after the control signal input LDRV that turns on light receives the control signal of turning on light of central controller transmission
Frequency conversion LED drive power low-power is exported, the LED load low-light level illumination being connected with frequency conversion LED drive power, the highlighted control
After signal input part MDRV processed receives the highlighted control signal of central controller transmission, the frequency conversion LED drive power Gao Gong
Rate is exported, the LED load highlight illumination.
2. tri-state frequency conversion LED power output power controlling circuit according to claim 1, it is characterised in that the frequency conversion
LED drive power is additionally provided with zero line side N, zero line L, ground terminal G, 12V output cathode end DC+ and negative pole end DC-.
3. tri-state frequency conversion LED power output power controlling circuit according to claim 1 and 2, it is characterised in that the change
Frequency control module includes：
There is circuit in PWM：Including single-chip microcomputer U6；The control signal input LDRV that turns on light, highlighted control signal input
MDRV is connected with the input of the single-chip microcomputer U6, and the single-chip microcomputer U6 is provided with pwm signal output end；
Variable frequency drive：Including phase transition transistor；
Photoelectrical coupler U5：Input connects the pwm signal output end by resistance R11, and the output termination phase transition is brilliant
The control end of body pipe, and the resistance R11 and photoelectrical coupler U5 node and publicly between be connected with resistance R36.
4. tri-state frequency conversion LED power output power controlling circuit according to claim 3, it is characterised in that the highlighted control
Signal input part MDRV processed receives N seconds interior, the pwm signal output end after the highlighted control signal that central control system sends
The pwm signal of output gradually changes to high duty ratio by low duty ratio, the frequency conversion LED drive power power output is gradually risen
It is high；After the highlighted control signal disappearance in M seconds, the pwm signal of the pwm signal output end output is gradually become by high duty ratio
Change to low duty ratio, the frequency conversion LED drive power power output is gradually reduced.
5. tri-state frequency conversion LED power output power controlling circuit according to claim 4, it is characterised in that the tri-state frequency conversion
LED power output power controlling circuit is powered using AC power AC；The phase transition transistor is PNP type triode Q1；
The AC power AC passes sequentially through the emitter stage that resistance R15, commutation diode D7 meet the triode Q1；The triode Q1
Base stage point two-way, lead up to resistance R30 and meet the photoelectrical coupler U5, separately lead up to resistance R31 and connect the rectification two
The node of pole pipe D7 and the emitter stage of the triode Q1；The knot of the commutation diode D7 and the emitter stage of the triode Q1
Point and publicly between be parallel with electric capacity EC2 and voltage-regulator diode Z1；The colelctor electrode of the triode Q1 has been sequentially connected in series resistance
R32, diode D4, resistance R33, resistance R34 and resistance R35, another termination of the resistance R35 is publicly；The resistance R34
The VFC is connect with the node of resistance R35 rectify pole LED+；The node of the resistance R32 and diode D4 with publicly it
Between be connected with voltage-regulator diode Z2；The node of the resistance R33 and resistance R34 and publicly between be connected with electric capacity C10；It is described
The node of resistance R34 and resistance R35 and publicly between be connected with electric capacity C9.
6. tri-state frequency conversion LED power output power controlling circuit according to claim 4, it is characterised in that the described tri-state
Frequency conversion LED power output power controlling circuit is powered using AC power AC；The phase transition transistor is PNP type triode
Q1；The AC power AC passes sequentially through the emitter stage that resistance R15, commutation diode D7 meet the triode Q1；Three pole
The base stage of pipe Q1 point two-way, leads up to resistance R30 and meets the photoelectrical coupler U5, separately leads up to resistance R31 and connects described whole
Flow the node of diode D7 and the emitter stage of the triode Q1；The emitter stage of the commutation diode D7 and triode Q1
Node and publicly between be parallel with electric capacity EC2 and voltage-regulator diode Z1；The colelctor electrode of the triode Q1 with publicly it
Between be connected with resistance R35, the resistance R35 and triode Q1 colelctor electrode node connect the VFC rectify pole LED+.
7. tri-state frequency conversion LED power output power controlling circuit according to claim 4, it is characterised in that the described tri-state
Frequency conversion LED power output power controlling circuit is powered using dc source DC；The phase transition transistor is PNP type triode
Q1；The dc source DC connects the emitter stage of the triode Q1 by resistance R15；The base stage of the triode Q1 point two-way,
Lead up to resistance R30 and meet the photoelectrical coupler U5, separately lead up to resistance R31 and connect the resistance R15 and the triode
The node of the emitter stage of Q1；The node of the emitter stage of the resistance R15 and the triode Q1 and publicly between be connected with it is steady
Pressure diode Z1；The colelctor electrode of the triode Q1 has been sequentially connected in series resistance R32, diode D4, resistance R33, resistance R34 and electricity
Resistance R35, another termination of the resistance R35 is publicly；The node of the resistance R34 and resistance R35 connects the VFC end
Positive pole LED+；The node of the resistance R32 and diode D4 and publicly between be connected with voltage-regulator diode Z2；The resistance
The node of R33 and resistance R34 and publicly between be connected with electric capacity C10；The node of the resistance R34 and resistance R35 with it is public
Electric capacity C9 is connected between ground.
8. according to any described tri-state frequency conversion LED power output power controlling circuits of claim 5-7, it is characterised in that described
The VSS terminations of the model PIC12F1822, the single-chip microcomputer U6 of single-chip microcomputer U6 are publicly；The RA0 ends of the single-chip microcomputer U6 point
Two-way, leads up to resistance R23 and meets power supply VCC, separately leads up to resistance R28 and connects publicly；The RA1 ends of the single-chip microcomputer U6 point
Two-way, leads up to resistance R24 and meets power supply VCC, separately leads up to resistance R27 and connects publicly；The PWM/RA2 of the single-chip microcomputer U6
It is the pwm signal output end；The vdd terminal of the single-chip microcomputer U6 meets power supply VCC；The RA5 ends of the single-chip microcomputer U6 point two-way, one
Road is connect publicly by resistance R25, and another road meets the highlighted control signal input MDRV；The RA4 ends of the single-chip microcomputer U6
Divide two-way, lead up to resistance R26 and connect publicly, another road meets the control signal input LDRV that turns on light；The single-chip microcomputer
The RA3 ends of U6 point two-way, leads up to resistance R21 and meets power supply VCC, separately leads up to electric capacity C16 and connects publicly.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180193.1A CN108282928B (en) | 2017-03-13 | 2017-03-13 | A kind of tri-state frequency conversion LED power output power controlling circuit powered using AC power source |
| CN201710145362.3A CN106851920B (en) | 2017-03-13 | 2017-03-13 | A kind of tri-state frequency conversion LED power output power controlling circuit |
| CN201810179733.4A CN108449829B (en) | 2017-03-13 | 2017-03-13 | A kind of tri-state frequency conversion LED power output power controlling circuit powered using DC power supply |
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| CN201710145362.3A CN106851920B (en) | 2017-03-13 | 2017-03-13 | A kind of tri-state frequency conversion LED power output power controlling circuit |
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| CN201810180193.1A Division CN108282928B (en) | 2017-03-13 | 2017-03-13 | A kind of tri-state frequency conversion LED power output power controlling circuit powered using AC power source |
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| CN201710145362.3A Active CN106851920B (en) | 2017-03-13 | 2017-03-13 | A kind of tri-state frequency conversion LED power output power controlling circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190391549A1 (en) * | 2018-06-20 | 2019-12-26 | Pilz Gmbh & Co. Kg | Circuit Arrangement for Switching an Electrical Load and Method for Checking a Status of a Safety Output of a Circuit Arrangement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110336618A (en) * | 2019-06-17 | 2019-10-15 | 武汉永信丰科技有限公司 | A kind of optical module control method, device and storage medium |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108449829B (en) | 2019-08-06 |
| CN108282928A (en) | 2018-07-13 |
| CN108449829A (en) | 2018-08-24 |
| CN108282928B (en) | 2019-08-06 |
| CN106851920B (en) | 2018-11-02 |
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