CN109769321A - A kind of LED lamp circuit with Delayed extinguishing function - Google Patents
A kind of LED lamp circuit with Delayed extinguishing function Download PDFInfo
- Publication number
- CN109769321A CN109769321A CN201910197201.8A CN201910197201A CN109769321A CN 109769321 A CN109769321 A CN 109769321A CN 201910197201 A CN201910197201 A CN 201910197201A CN 109769321 A CN109769321 A CN 109769321A
- Authority
- CN
- China
- Prior art keywords
- circuit
- control circuit
- constant
- current
- delay
- 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
-
- 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]
-
- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of LED lamp circuits with Delayed extinguishing function, including LED illuminating circuit, rectification circuit, filter circuit, trigger conversion circuit, delay control circuit and constant-current control circuit, constant-current control circuit has normal mode of operation and delay working mode, running current and delay working electric current are preset in constant-current control circuit, delay working electric current is less than running current, delay time is preset in delay control circuit, the output end of constant-current control circuit is not influenced by the input signal that its second control terminal accesses when constant-current control circuit is in normal mode of operation, constant-current control circuit is in delay working mode, the output end of constant-current control circuit is controlled by the input signal of the second control terminal access of constant-current control circuit, it is controlled by the input signal that the second control terminal of constant-current control circuit accesses permanent The output end output delay working electric current of flow control circuit or disconnection；Advantage will not be extinguished at once after being powered off, convenient for the action of user.
Description
Technical field
The present invention relates to a kind of LED lamp circuits, more particularly, to a kind of LED lamp circuit with Delayed extinguishing function.
Background technique
LED light has been widely used in illuminating industry as a kind of energy-efficient product.The performance of LED light directly takes
Certainly in its core circuit --- the performance of LED lamp circuit.
The structural block diagram of existing LED lamp circuit is as shown in Figure 1, generally include current rectifying and wave filtering circuit, constant-current control circuit
With LED illuminating circuit.Current rectifying and wave filtering circuit has firewire input terminal, zero curve input, output end and ground terminal, current constant control electricity
Road has voltage input end, ground terminal, positive output end and negative output terminal, and LED illuminating circuit has anode and cathode, rectifying and wave-filtering
The firewire input terminal of circuit and the firewire of alternating current connect, and the zero curve input terminal of current rectifying and wave filtering circuit and the zero curve of alternating current connect, whole
The voltage input end of the output end and constant-current control circuit that flow filter circuit connects, the positive output end and LED of constant-current control circuit
The anode connection of illuminating circuit, the negative output terminal of constant-current control circuit are connect with the cathode of LED illuminating circuit, current rectifying and wave filtering circuit
Ground terminal connected with the ground terminal of constant-current control circuit.
When LED lamp circuit is electrically connected with city, current rectifying and wave filtering circuit the alternating voltage of alternating current be converted to fluctuation it is lesser
DC voltage, at this point, the output end of current rectifying and wave filtering circuit exports DC voltage, constant-current control circuit exports current rectifying and wave filtering circuit
DC voltage converted, at this time between the positive output end and negative output terminal of constant-current control circuit export constant size electric current
For the power supply of LED illuminating circuit, there is electric current to pass through in LED illuminating circuit, LED illuminating circuit shines, when LED lamp circuit and alternating current
When connection disconnects, for LED lamp circuit due to not having electric energy, the electric current for flowing through LED illuminating circuit is that zero, LED illuminating circuit does not shine.
It when above-mentioned LED lamp circuit is applied in LED light, is connect by power switch with mains supply, when power switch will
When alternating current is connected to LED lamp circuit, there is electric current to flow through on LED illuminating circuit, LED illuminating circuit shines, when the power switch will
When alternating current and LED illuminating circuit disconnect, there is no electric current to flow through on LED illuminating circuit, LED illuminating circuit does not shine.Due to the electricity
Source switch is fixedly mounted at a certain position, and when closing LED light, user needs to go to manual operation power supply at power switch and opens
It closes come after powering off, LED light is extinguished at once after power-off, ambient brightness rapid drawdown, but user will also be from the peace of power switch
It is left at holding position, brings many inconvenience to the action of user like that.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of LED lamp circuit with Delayed extinguishing function, LED light electricity
Road will not extinguish at once after a loss of power, convenient for the action of user.
The technical scheme of the invention to solve the technical problem is: a kind of LED light electricity with Delayed extinguishing function
Road, including LED illuminating circuit, the LED illuminating circuit have anode and cathode, further include rectification circuit, filter circuit, touching
Conversion circuit, delay control circuit and constant-current control circuit are sent out, there is the rectification circuit firewire input terminal, zero curve to input
End, output and ground, the filter circuit have input, output end and ground terminal, the triggering conversion circuit
With anode, input, output end and ground terminal, the delay control circuit has anode, ground terminal, triggering end and output
End, the current constant control electric current have the first control terminal, the second control terminal, output and ground, the rectification circuit
Firewire input terminal be used to connect the firewire of alternating current, the zero curve input terminal of the rectification circuit is used to connect the zero curve of alternating current,
The output end of the rectification circuit, the input terminal of the filter circuit, the input terminal of the triggering conversion circuit and institute
First control terminal of the constant-current control circuit stated connects, the output end of the filter circuit, the triggering conversion circuit
The anode connection of the anode of positive, described delay control circuit and the LED illuminating circuit, the triggering conversion circuit
Output end connected with the triggering end of the delay control circuit, the output end of the delay control circuit and the perseverance
The second control terminal connection of flow control circuit, the output end of the constant-current control circuit and the LED illuminating circuit are born
Pole connection, the ground connection of the ground terminal of the rectification circuit, the ground terminal of the triggering conversion circuit, the filter circuit
It holds, the ground terminal of the delay control circuit is connected with the ground terminal of the constant-current control circuit；The current constant control
Circuit has normal mode of operation and delay working mode, and running current is preset in the constant-current control circuit and is prolonged
When operating current, the delay working electric current is less than the running current, presets in the delay control circuit
There is delay time, when the voltage signal that the first control terminal of the constant-current control circuit accesses is from the low electricity for being kept for 5 seconds or more
Flat when becoming high level, the constant-current control circuit enters normal mode of operation, the output end of the constant-current control circuit
Running current is exported, and the output end of the constant-current control circuit is not by the input signal of its second control terminal access
It influences, the LED illuminating circuit issues the light being adapted with running current, is in the constant-current control circuit
When normal mode of operation, when the voltage signal that the first control terminal of the constant-current control circuit accesses is from high level to low electricity
It is flat, then from low level to high level and when a low level pulse signal of the time less than 3 seconds, the triggering conversion circuit
Input terminal has received the low level pulse signal, and generates trigger signal output, the current constant control electricity in its output end
Road also enters delay working mode simultaneously, and the output end of the constant-current control circuit is controlled by the constant-current control circuit
The triggering end of the input signal of second control terminal access, the delay control circuit is receiving the triggering conversion circuit
After the trigger signal of output, delay is generated in its output end and is turned on light control that signal is sent to the constant-current control circuit second
Control terminal, the output end of the constant-current control circuit exports the operating current of turning on light that is delayed, the LED illuminating circuit hair at this time
The light that operating current of turning on light out with delay is adapted, when the delay control circuit does not have again within preset delay time
Secondary to receive trigger signal, at the end of delay time, the output end output delay of the delay control circuit, which is turned off the light, controls letter
Number, the output end shutdown of the constant-current control circuit, no current output, the LED illuminating circuit no longer shines, when described
Constant-current control circuit when being in delay working mode, no matter Suo Shu LED illuminating circuit is in luminance or not send out
Light state, as long as being inputted from high level to low level in first control terminal of constant-current control circuit, then from low level to height
The low level pulse signal of level and time less than 3 seconds, the constant-current control circuit will be again introduced into normal work mould
Formula.
The triggering conversion circuit includes first resistor, second resistance, 3rd resistor, first capacitor and the first integrated electricity
Road chip, the model HL2711A of first IC chip, one end of the first resistor are the triggering
The input terminal of conversion circuit, the other end of the first resistor, one end of the second resistance, the first capacitor
One end is connected with the 4th foot of first IC chip, the 1st foot and the 2nd foot of first IC chip
Connection, one end of the 3rd resistor are the anode of the triggering conversion circuit, the other end of 3rd resistor and described
3rd foot of the first IC chip connects, and the 8th foot of first IC chip is the triggering conversion circuit
Output end, the other end and first ic core of the other end of the second resistance, the first capacitor
5th foot of piece connects and its connecting pin is the ground terminal of the triggering conversion circuit.The output end of the circuit has high pressure resistant
Characteristic, with delay control circuit cooperate, cost can be reduced.
The delay control circuit include the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the second capacitor and
First diode, second capacitor is electrolytic capacitor, and the first diode is zener diode, the 4th electricity
One end of resistance is the anode of the delay control circuit, the one of the other end of the 4th resistance and the 5th resistance
End connection, the other end of the 5th resistance is connected with one end of the 6th resistance and its connecting pin is the delay
The triggering end of control circuit, the anode connection of the other end and second capacitor of the 6th resistance, described second
The cathode of capacitor, the first diode cathode connected with one end of the 7th resistance and its connecting pin be it is described
The anode of the output end of delay control circuit, the first diode is connected with the other end of the 7th resistance and it connects
Connect the ground terminal that end is the delay control circuit.The circuit realizes that cost is relatively low using RC circuit structure.
The filter circuit includes the second diode and third capacitor, and the third capacitor is electrolytic capacitor, described
The second diode the just extremely described filter circuit input terminal, the cathode of second diode and the third
The anode of capacitor connects and its connecting pin is the output end of the filter circuit, and the cathode of the third capacitor is described
The ground terminal of filter circuit.
The constant-current control circuit includes NMOS tube, the 8th resistance, the 9th resistance, the tenth resistance, the 4th capacitor, the 5th
Capacitor and the second IC chip, the model SM2212E of second IC chip, the 8th resistance
One end is the first control terminal of the constant-current control circuit, the other end of the 8th resistance and the described second integrated electricity
8th foot of road chip connects, and the 5th foot of second IC chip and the connection of the 6th foot and its connecting pin are described
4th foot of the output end of constant-current control circuit, second IC chip is connected with one end of the 9th resistance,
The other end of 9th resistance is connected with the drain electrode of the NMOS tube, and the grid of the NMOS tube is the constant current
3rd foot of the second control terminal of control circuit, second IC chip is connected with one end of the tenth resistance,
1st foot of second IC chip is connected with one end of the 4th capacitor, second ic core
2nd foot of piece is connected with one end of the 5th capacitor, the bottom electrode of second IC chip, described
The source electrode of NMOS tube, the other end of the tenth resistance, the other end of the 4th capacitor and the 5th capacitor
Other end connection and its connecting pin are the ground terminal of the current constant control electric current.The second of constant-current control circuit use is integrated
Circuit chip is a kind of general two sections of light modulation linear constant current IC chips of switch, by the low pulse for being input to the 8th foot
Signal can be such that the second IC chip converts between two kinds of working conditions of delay working mode and normal mode of operation,
Output electric current in normal mode of operation can facilitate setting LED light normal by the resistance value adjusting of the tenth resistance of change
Output size of current when illuminating state, output end current when delay working mode by changing the resistance value of the 9th resistance,
Output size of current when delay illuminating state is adjusted, the on and off state of control NMOS tube is passed through, so that it may control the
The turn-on and turn-off state of one IC chip output end in delay working mode, the constant-current control circuit are a kind of controllable
Linear constant current electric current export structure, circuit is simple, and cost is relatively low.
The rectification circuit realizes that the 1st foot of the full bridge rectifier bridge heap is described using full bridge rectifier bridge heap
The firewire input terminal of rectification circuit, the 3rd foot of the full bridge rectifier bridge heap are the zero curve input terminal of the rectification circuit, institute
2nd foot of the full bridge rectifier bridge heap stated is the output end of the rectification circuit, and the 4th foot of the full bridge rectifier bridge heap is institute
The ground terminal for the rectification circuit stated.
The LED illuminating circuit is formed by several LED luminescence unit parallel connections, each LED luminescence unit point
It is not connected and is formed by several LED light emitting diodes, the positive parallel connected end of the LED luminescence unit described in several is described
The anode of LED illuminating circuit, the cathode parallel connected end of the LED luminescence unit described in several are the negative of the LED illuminating circuit
Pole.
Compared with the prior art, the advantages of the present invention are as follows pass through rectification circuit, filter circuit, triggering conversion circuit, prolong
When control circuit, constant-current control circuit and LED illuminating circuit construct LED lamp circuit, constant-current control circuit, which has, works normally mould
Formula and delay working mode are preset with running current and delay working electric current, delay working electric current in constant-current control circuit
Less than running current, delay time is preset in delay control circuit, when LED lamp circuit and city are electrically disconnected, LED lamp circuit
Middle no current passes through, and the voltage signal of the first control terminal access of constant-current control circuit is low level, when LED lamp circuit and alternating current
When reconnecting after disconnection 5 seconds or more, the voltage signal of the first control terminal access of constant-current control circuit will be from holding 5 seconds or more
Low level becomes high level, regards as turning on light at this time, and constant-current control circuit enters normal mode of operation, constant-current control circuit it is defeated
Outlet exports running current, and the output end of constant-current control circuit is not by the shadow of the input signal of its second control terminal access
It rings, LED illuminating circuit issues the light being adapted with running current, when constant-current control circuit is in normal mode of operation
When, LED lamp circuit and alternating current enter off-state from connection status and enter back into connection status (process can pass through continuous operation
Power switch is realized) time less than 3 seconds when, i.e. the voltage signal of the first control terminal access of constant-current control circuit is from height
Level is to low level, then from low level to high level and when a low level pulse signal of the time less than 3 seconds, triggering conversion electricity
The input terminal on road has received the low level pulse signal, and generates trigger signal output in its output end, regards as closing at this time
Lamp, constant-current control circuit enter delay working mode, and the output end of constant-current control circuit is controlled by the second of constant-current control circuit
The input signal of control terminal access, the triggering end of delay control circuit is in the trigger signal for receiving triggering conversion circuit output
Afterwards, it first generates delay in its output end and turns on light and control the second control terminal that signal is sent to constant-current control circuit, at this time constant current control
The output end output delay of circuit processed is turned on light operating current, and LED illuminating circuit, which is issued, turns on light what operating current was adapted with delay
Light at the end of delay time, prolongs when delay control circuit is not received again by trigger signal within preset delay time
When control circuit output end generate delay and turn off the light and control signal output, the output end shutdown of constant-current control circuit, no current is defeated
Out, LED illuminating circuit no longer shines, and the delay-action of LED light is realized, when the constant-current control circuit is in delay working mould
When formula, no matter Suo Shu LED illuminating circuit is in luminance or non-light emitting state, as long as in the current constant control electricity
The first control terminal of road is inputted from high level to low level, then from low level to high level and a low level of the time less than 3 seconds
Pulse signal, the constant-current control circuit will be again introduced into normal mode of operation, and thus LED lamp circuit of the invention has and prolongs
When turn off the light function, will not extinguish at once after a loss of power, convenient for the action of user, and can have making for traditional LED lamp circuit
Use function.
Detailed description of the invention
Fig. 1 is the structural block diagram of existing LED lamp circuit；
Fig. 2 is the structural block diagram of the LED lamp circuit of the invention with Delayed extinguishing function；
Fig. 3 is the circuit diagram of the LED lamp circuit of the invention with Delayed extinguishing function.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment one: as shown in Fig. 2, a kind of LED lamp circuit with Delayed extinguishing function, including LED illuminating circuit, LED
Illuminating circuit has anode and cathode, further includes rectification circuit, filter circuit, triggering conversion circuit, delay control circuit and perseverance
Flow control circuit, rectification circuit have firewire input terminal, zero curve input, output end and ground terminal, and filter circuit has input
There is anode, input, output end and ground terminal, delay control circuit to have for end, output and ground, triggering conversion circuit
Anode, ground terminal, triggering end and output end, current constant control electric current have the first control terminal, the second control terminal, output end and ground connection
End, the firewire input terminal of rectification circuit are used to connect the firewire of alternating current, and the zero curve input terminal of rectification circuit is for connecting alternating current
Zero curve, the output end of rectification circuit, filter circuit input terminal, trigger conversion circuit input terminal and constant-current control circuit the
The connection of one control terminal, the output end of filter circuit, the anode for triggering conversion circuit, the anode of delay control circuit and LED shine
The anode connection of circuit, the output end for triggering conversion circuit are connected with the triggering end of delay control circuit, delay control circuit
Output end is connected with the second control terminal of constant-current control circuit, the output end of constant-current control circuit and the cathode of LED illuminating circuit
Connection, the ground terminal of rectification circuit, the triggering ground terminal of conversion circuit, the ground terminal of filter circuit, delay control circuit connect
Ground terminal is connected with the ground terminal of constant-current control circuit；Constant-current control circuit has normal mode of operation and delay working mode, permanent
Running current and delay working electric current are preset in flow control circuit, delay working electric current is less than running current, prolongs
When control circuit in be preset with delay time, when constant-current control circuit the first control terminal access voltage signal from keep 5 seconds
When above low level becomes high level, constant-current control circuit enters normal mode of operation, and the output end of constant-current control circuit is defeated
Running current out, and the output end of constant-current control circuit is not influenced by the input signal that its second control terminal accesses, LED
Illuminating circuit issues the light being adapted with running current and works as perseverance when constant-current control circuit is in normal mode of operation
Flow control circuit the first control terminal access voltage signal be from high level to low level, then from low level to high level and when
Between a low level pulse signal less than 3 seconds when, the input terminal for triggering conversion circuit has received the low level pulse signal,
And trigger signal output is generated in its output end, constant-current control circuit enters delay working mode, the output of constant-current control circuit
End is controlled by the input signal of the second control terminal access of constant-current control circuit, and the triggering end of delay control circuit is receiving touching
After the trigger signal for sending out conversion circuit output, generates delay in its output end and turn on light and control signal and be sent to constant-current control circuit
Second control terminal, the output end of constant-current control circuit exports the operating current of turning on light that is delayed at this time, and LED illuminating circuit issues and delay
The adaptable light of operating current of turning on light, when delay control circuit is not received again by triggering letter within preset delay time
Number, at the end of delay time, the output delay of the output end of delay control circuit, which is turned off the light, controls signal, constant-current control circuit it is defeated
Outlet shutdown, no current output, LED illuminating circuit no longer shines, when constant-current control circuit is in delay working mode, no matter
LED illuminating circuit is in luminance or non-light emitting state, as long as inputting in the first control terminal of constant-current control circuit from height
Level is to low level, then from low level to high level and a low level pulse signal of the time less than 3 seconds, constant-current control circuit
Normal mode of operation will be again introduced into.
The working principle of LED lamp circuit with Delayed extinguishing function of the invention are as follows: LED lamp circuit is passed through into power switch
It is electrically connected with city, two kinds of work of constant-current control circuit in LED lamp circuit are realized in the disconnection and closure switched by operation power
The switching of mode.When user's lamp, if current power switch is in closed state, illustrate at current constant-current control circuit
It in delay working state, first disconnects reclose power switch (operating time is less than 3 seconds) at this time, if current power switch is in
Off-state then shows that LED lamp circuit using normal light-off mode, does not use Delayed extinguishing mode, power switch is directly closed
Close, when LED lamp circuit enters use state from non-working condition, at this time constant-current control circuit the first control terminal access voltage
Signal becomes high level from holding 5 seconds or more low levels, and constant-current control circuit enters normal mode of operation, constant-current control circuit
Output end export running current, and the output end of constant-current control circuit not by its second control terminal access input signal
Influence, LED illuminating circuit issue with running current be adapted light, constant-current control circuit be in work normally mould
When formula, when user will turn off the light, if not selecting Delayed extinguishing, directly power switch is disconnected, if selection delay
It turns off the light, then first disconnects and reclose power switch (operating time is less than 3 seconds), at this time the first control terminal access of constant-current control circuit
Voltage signal be from high level to low level, then from low level to high level and the time is less than 3 seconds low level pulses
When signal, the input terminal for triggering conversion circuit has received the low level pulse signal, and generates trigger signal in its output end
Output regards as delay at this time and turns off the light, and constant-current control circuit enters delay working mode, and the output end of constant-current control circuit is controlled
Triggering conversion is being received in the triggering end of the input signal that the second control terminal of constant-current control circuit accesses, delay control circuit
After the trigger signal of circuit output, delay is first generated in its output end and is turned on light control that signal is sent to constant-current control circuit second
Control terminal, the output end of constant-current control circuit exports the operating current of turning on light that is delayed at this time, and the sending of LED illuminating circuit is turned on light with delay
The adaptable light of operating current, when delay control circuit is not received again by trigger signal within preset delay time,
At the end of delay time, the output end of delay control circuit, which generates delay, turns off the light and controls signal output, constant-current control circuit it is defeated
Outlet shutdown, no current output, LED illuminating circuit no longer shine, and the delay-action of LED light are realized, if delay control circuit
It is received again by trigger signal within preset delay time, when restarting delay meter, when constant-current control circuit is in delay
When operating mode, no matter LED illuminating circuit is in luminance or non-light emitting state, as long as in constant-current control circuit first
Control terminal input from high level to low level, then from low level to high level and the time less than 3 seconds a low level pulse letter
Number, constant-current control circuit will be again introduced into normal mode of operation.
Embodiment two: the present embodiment is basically the same as the first embodiment, and difference is as described below:
As shown in figure 3, triggering conversion circuit includes first resistor R1, second resistance R2,3rd resistor in the present embodiment
R3, first capacitor C1 and the first IC chip U1, the model HL2711A of the first IC chip U1, first resistor
One end of R1 is the input terminal for triggering conversion circuit, the other end of first resistor R1, one end of second resistance R2, first capacitor C1
One end connected with the 4th foot of the first IC chip U1, the 1st foot of the first IC chip U1 and the connection of the 2nd foot, the
One end of three resistance R3 is the anode for triggering conversion circuit, the of the other end of 3rd resistor R3 and the first IC chip U1
The connection of 3 feet, the 8th foot of the first IC chip U1 be the output end of triggering conversion circuit, the other end of second resistance R2, the
The connection of the 5th foot of the other end of one capacitor C1 and the first IC chip U1 and its connecting pin are the ground connection for triggering conversion circuit
End.
As shown in figure 3, delay control circuit includes the 4th resistance R4, the 5th resistance R5, the 6th resistance in the present embodiment
R6, the 7th resistance R7, the second capacitor C2 and first diode D1, the second capacitor C2 are electrolytic capacitors, and first diode D1 is steady
Diode is pressed, one end of the 4th resistance R4 is the anode of delay control circuit, the other end and the 5th resistance R5 of the 4th resistance R4
One end connection, one end connection of the other end of the 5th resistance R5 and the 6th resistance R6 and its connecting pin is delay control circuit
The anode connection of triggering end, the other end of the 6th resistance R6 and the second capacitor C2, cathode, the first diode D1 of the second capacitor C2
Cathode and the 7th resistance R7 one end connection and its connecting pin be delay control circuit output end, first diode D1 is just
Pole is connected with the other end of the 7th resistance R7 and its connecting pin is the ground terminal of delay control circuit.
As shown in figure 3, filter circuit includes the second diode D2 and third capacitor C3, third capacitor C3 in the present embodiment
For electrolytic capacitor, the just extremely input terminal of filter circuit of the second diode D2, the cathode and third capacitor of the second diode D2
The anode of C3 connects and its connecting pin is the output end of filter circuit, and the cathode of third capacitor C3 is the ground terminal of filter circuit.
As shown in figure 3, in the present embodiment, constant-current control circuit include NMOS tube M1, the 8th resistance R8, the 9th resistance R9,
Tenth resistance R10, the 4th capacitor C4, the 5th capacitor C5 and the second IC chip U2, the type of the second IC chip U2
It number is SM2212E, one end of the 8th resistance R8 is the first control terminal of constant-current control circuit, the other end of the 8th resistance R8 and the
The 8th foot of two IC chip U2 connects, and the 5th foot of the second IC chip U2 and the connection of the 6th foot and its connecting pin are
The output end of constant-current control circuit, one end connection of the 4th foot and the 9th resistance R9 of the second IC chip U2, the 9th resistance
The other end of R9 is connected with the drain electrode of NMOS tube M1, and the grid of NMOS tube M1 is the second control terminal of constant-current control circuit, and second
One end connection of the 3rd foot and the tenth resistance R10 of IC chip U2, the 1st foot and the 4th of the second IC chip U2
One end of capacitor C4 connects, one end connection of the 2nd foot and the 5th capacitor C5 of the second IC chip U2, the second integrated circuit
The bottom electrode of chip U2, the source electrode of NMOS tube M1, the other end of the tenth resistance R10, the 4th capacitor C4 the other end and the 5th
The other end of capacitor C5 connects and its connecting pin is the ground terminal of current constant control electric current.
As shown in figure 3, rectification circuit is realized using full bridge rectifier bridge heap Db, full bridge rectifier bridge heap Db's in the present embodiment
1st foot is the firewire input terminal of rectification circuit, and the 3rd foot of full bridge rectifier bridge heap Db is the zero curve input terminal of rectification circuit, full-bridge
The 2nd foot of rectifier bridge stack Db is the output end of rectification circuit, and the 4th foot of full bridge rectifier bridge heap Db is the ground terminal of rectification circuit.
As shown in figure 3, LED illuminating circuit is formed by several LED luminescence unit parallel connections in the present embodiment, each LED hair
Light unit is connected by several LED Light-emitting diode LED 1-LEDn formed respectively, and n is the integer more than or equal to 1, several LED
The positive parallel connected end of luminescence unit is the anode of LED illuminating circuit, and the cathode parallel connected end of several LED luminescence units is LED hair
The cathode of optical circuit.
Claims (7)
1. a kind of LED lamp circuit with Delayed extinguishing function, including LED illuminating circuit, the LED illuminating circuit has anode
And cathode, it is characterised in that further include rectification circuit, filter circuit, triggering conversion circuit, delay control circuit and current constant control
Circuit, the rectification circuit have firewire input terminal, zero curve input, output end and ground terminal, the filter circuit tool
There are input, output end and ground terminal, the triggering conversion circuit has anode, input, output end and ground terminal, described
Delay control circuit have anode, ground terminal, triggering end and output end, the current constant control electric current have first control
End, the second control terminal, output and ground, the firewire input terminal of the rectification circuit are used to connect the firewire of alternating current, institute
The zero curve input terminal for the rectification circuit stated is used to connect the zero curve of alternating current, the output end of the rectification circuit, the filtering
The input terminal of circuit, the triggering conversion circuit input terminal connected with the first control terminal of the constant-current control circuit,
The output end of the filter circuit, the anode of positive, described delay control circuit for triggering conversion circuit and institute
The anode connection for the LED illuminating circuit stated, the touching of the output end and the delay control circuit of the triggering conversion circuit
Originator connection, the output end of the delay control circuit is connected with the second control terminal of the constant-current control circuit, described
The output end of constant-current control circuit connected with the cathode of the LED illuminating circuit, the ground terminal of the rectification circuit, institute
State triggering the ground terminal of conversion circuit, the ground terminal of the filter circuit, the delay control circuit ground terminal and
The ground terminal of the constant-current control circuit connects；
The constant-current control circuit has normal mode of operation and delay working mode, presets in the constant-current control circuit
There are running current and delay working electric current, the delay working electric current is less than the running current, described
Delay time is preset in delay control circuit, when the constant-current control circuit the first control terminal access voltage signal from
When holding 5 seconds or more low levels become high level, the constant-current control circuit enters normal mode of operation, the constant current
The output end of control circuit exports running current, and the output end of the constant-current control circuit is not by its second control terminal
The influence of the input signal of access, the LED illuminating circuit issues the light being adapted with running current, described
When constant-current control circuit has normal mode of operation, when the voltage signal that the first control terminal of the constant-current control circuit accesses
It is described for from high level to low level, then from low level to high level and when a low level pulse signal of the time less than 3 seconds
The input terminal of triggering conversion circuit have received the low level pulse signal, and generate trigger signal output in its output end,
The constant-current control circuit enters delay working mode, and the output end of the constant-current control circuit is controlled by the constant current
The triggering end of the input signal of the second control terminal access of control circuit, the delay control circuit is receiving the touching
After the trigger signal for sending out conversion circuit output, generates delay in its output end and turn on light and control signal and be sent to the current constant control
Second control terminal of circuit, the output end of the constant-current control circuit exports the operating current of turning on light that is delayed, the LED at this time
Illuminating circuit sending and the adaptable light of operating current of turning on light that is delayed, when the delay control circuit is in preset delay
Interior not to be received again by trigger signal, at the end of delay time, the output end of the delay control circuit exports delay
It turns off the light and controls signal, the output end shutdown of the constant-current control circuit, no current output, the LED illuminating circuit is no longer
It shines, when the constant-current control circuit is in delay working mode, no matter Suo Shu LED illuminating circuit is in the shape that shines
State or non-light emitting state, if it is inputted from high level to low level in first control terminal of constant-current control circuit, then from
Low level is to high level and a low level pulse signal of the time less than 3 seconds, the constant-current control circuit will be again introduced into
Normal mode of operation.
2. a kind of LED lamp circuit with Delayed extinguishing function according to claim 1, it is characterised in that the triggering turns
Changing circuit includes first resistor, second resistance, 3rd resistor, first capacitor and the first IC chip, first collection
At the model HL2711A of circuit chip, one end of the first resistor is the input terminal of the triggering conversion circuit, institute
The other end for the first resistor stated, one end of the second resistance, one end of the first capacitor and first collection
It is connected at the 4th foot of circuit chip, the 1st foot of first IC chip and the connection of the 2nd foot, the 3rd resistor
One end be the described triggering conversion circuit anode, the of the other end of 3rd resistor and first IC chip
The connection of 3 feet, the 8th foot of first IC chip are the output end of the triggering conversion circuit, described second
The other end of resistance, the first capacitor the other end connected with the 5th foot of first IC chip and its connect
Connect the ground terminal that end is the triggering conversion circuit.
3. a kind of LED lamp circuit with Delayed extinguishing function according to claim 1, it is characterised in that the delay control
Circuit processed include the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the second capacitor and first diode, described second
Capacitor is electrolytic capacitor, and the first diode is zener diode, and one end of the 4th resistance is the delay
The other end of the anode of control circuit, the 4th resistance is connected with one end of the 5th resistance, the 5th electricity
The other end of resistance is connected with one end of the 6th resistance and its connecting pin is the triggering end of the delay control circuit, institute
The anode connection of the other end of the 6th resistance stated and second capacitor, the cathode of second capacitor, described the
The cathode of one diode is connected with one end of the 7th resistance and its connecting pin is the output of the delay control circuit
The anode at end, the first diode is connected with the other end of the 7th resistance and its connecting pin is the delay control
The ground terminal of circuit processed.
4. a kind of LED lamp circuit with Delayed extinguishing function according to claim 1, it is characterised in that the filtered electrical
Road include the second diode and third capacitor, the third capacitor be electrolytic capacitor, second diode just extremely
The anode of the input terminal of the filter circuit, the cathode of second diode and the third capacitor connects and it connects
The output end that end is the filter circuit is connect, the cathode of the third capacitor is the ground terminal of the filter circuit.
5. a kind of LED lamp circuit with Delayed extinguishing function according to claim 1, it is characterised in that the constant current control
Circuit processed includes NMOS tube, the 8th resistance, the 9th resistance, the tenth resistance, the 4th capacitor, the 5th capacitor and the second ic core
Piece, the model SM2212E of second IC chip, one end of the 8th resistance are the current constant control
The other end of first control terminal of circuit, the 8th resistance is connected with the 8th foot of second IC chip, institute
5th foot of the second IC chip stated and the connection of the 6th foot and its connecting pin are the output end of the constant-current control circuit,
4th foot of second IC chip is connected with one end of the 9th resistance, the 9th resistance it is another
End is connected with the drain electrode of the NMOS tube, and the grid of the NMOS tube is the second control of the constant-current control circuit
End, the 3rd foot of second IC chip are connected with one end of the tenth resistance, second integrated circuit
1st foot of chip is connected with one end of the 4th capacitor, the 2nd foot of second IC chip and described
One end of five capacitors connects, the bottom electrode of second IC chip, the source electrode of the NMOS tube, described the
The other end of ten resistance, the 4th capacitor the other end connected with the other end of the 5th capacitor and its connecting pin is
The ground terminal of the current constant control electric current.
6. a kind of LED lamp circuit with Delayed extinguishing function according to claim 1, it is characterised in that the rectified current
Road realizes that the 1st foot of the full bridge rectifier bridge heap is the firewire input terminal of the rectification circuit using full bridge rectifier bridge heap,
3rd foot of the full bridge rectifier bridge heap be the rectification circuit zero curve input terminal, the 2nd of the full bridge rectifier bridge heap the
Foot is the output end of the rectification circuit, and the 4th foot of the full bridge rectifier bridge heap is the ground terminal of the rectification circuit.
7. a kind of LED lamp circuit with Delayed extinguishing function according to claim 1, it is characterised in that the LED hair
Optical circuit is formed by several LED luminescence unit parallel connections, and each LED luminescence unit is respectively by several LED luminous two
Pole pipe connects to be formed, and the positive parallel connected end of the LED luminescence unit described in several is the anode of the LED illuminating circuit, if
The cathode parallel connected end of the dry LED luminescence unit is the cathode of the LED illuminating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910197201.8A CN109769321B (en) | 2019-03-15 | 2019-03-15 | LED lamp circuit with delayed light-off function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910197201.8A CN109769321B (en) | 2019-03-15 | 2019-03-15 | LED lamp circuit with delayed light-off function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109769321A true CN109769321A (en) | 2019-05-17 |
| CN109769321B CN109769321B (en) | 2021-01-12 |
Family
ID=66459060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910197201.8A Active CN109769321B (en) | 2019-03-15 | 2019-03-15 | LED lamp circuit with delayed light-off function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109769321B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110351922A (en) * | 2019-05-30 | 2019-10-18 | 鹰潭阳光照明有限公司 | A kind of intelligence light-adjustable LED lamp |
| CN111405717A (en) * | 2020-02-21 | 2020-07-10 | 浙江阳光照明电器集团股份有限公司 | L ED lamp circuit with human body induction function |
| CN111467519A (en) * | 2020-03-23 | 2020-07-31 | 浙江阳光照明电器集团股份有限公司 | Ultraviolet light disinfection lamp circuit |
| CN113038660A (en) * | 2021-04-21 | 2021-06-25 | 嘉兴市光泰照明有限公司 | LED turns to auxiliary lighting lamp control circuit |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101827477A (en) * | 2009-03-06 | 2010-09-08 | 夏普株式会社 | Led drive circuit, LED lamp, LED lighting apparatus and LED illuminator |
| CN101882879A (en) * | 2010-06-30 | 2010-11-10 | 海洋王照明科技股份有限公司 | Circuit converting constant current source to constant voltage source and light using same |
| US8058815B1 (en) * | 2007-05-31 | 2011-11-15 | Spectrum Illumination Co., Inc. | LED drivers and driver controllers |
| CN202095134U (en) * | 2011-05-03 | 2011-12-28 | 四川新力光源有限公司 | Sound control lighting device |
| CN103118456A (en) * | 2012-12-14 | 2013-05-22 | 浙江明烁电子科技有限公司 | Acousto-optical double control timed control circuit and floodlight |
| CN103152951A (en) * | 2013-03-13 | 2013-06-12 | 绍兴光大芯业微电子有限公司 | LED (light emitting diode) driving control circuit and driving circuit structure of LED driving control circuit |
| CN203722882U (en) * | 2014-01-22 | 2014-07-16 | 无锡硅动力微电子股份有限公司 | High-precision primary side control LED constant current driving circuit for realizing line voltage compensation |
| CN203748061U (en) * | 2014-01-22 | 2014-07-30 | 刘胜泉 | Novel driver used for induction LED |
| CN204104200U (en) * | 2014-11-13 | 2015-01-14 | 周艳艳 | A kind of Novel light-operated LED drive circuit |
| CN204145851U (en) * | 2014-11-05 | 2015-02-04 | 西安路方电子科技有限公司 | A kind of LED drive power |
| CN104968118A (en) * | 2012-10-30 | 2015-10-07 | 四川新力光源股份有限公司 | Sound control time-delay LED drive circuit |
| CN106545762A (en) * | 2016-08-31 | 2017-03-29 | 刘达 | A kind of light-operated LED lamp tube |
| CN106793339A (en) * | 2017-02-06 | 2017-05-31 | 苏州智浦芯联电子科技股份有限公司 | Self adaptation line voltage compensation LED drive circuit based on primary side feedback |
| CN106973461A (en) * | 2017-05-05 | 2017-07-21 | 电子科技大学 | A kind of LED drive circuit |
-
2019
- 2019-03-15 CN CN201910197201.8A patent/CN109769321B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8058815B1 (en) * | 2007-05-31 | 2011-11-15 | Spectrum Illumination Co., Inc. | LED drivers and driver controllers |
| CN101827477A (en) * | 2009-03-06 | 2010-09-08 | 夏普株式会社 | Led drive circuit, LED lamp, LED lighting apparatus and LED illuminator |
| CN101882879A (en) * | 2010-06-30 | 2010-11-10 | 海洋王照明科技股份有限公司 | Circuit converting constant current source to constant voltage source and light using same |
| CN202095134U (en) * | 2011-05-03 | 2011-12-28 | 四川新力光源有限公司 | Sound control lighting device |
| CN104968118A (en) * | 2012-10-30 | 2015-10-07 | 四川新力光源股份有限公司 | Sound control time-delay LED drive circuit |
| CN103118456A (en) * | 2012-12-14 | 2013-05-22 | 浙江明烁电子科技有限公司 | Acousto-optical double control timed control circuit and floodlight |
| CN103152951A (en) * | 2013-03-13 | 2013-06-12 | 绍兴光大芯业微电子有限公司 | LED (light emitting diode) driving control circuit and driving circuit structure of LED driving control circuit |
| CN203722882U (en) * | 2014-01-22 | 2014-07-16 | 无锡硅动力微电子股份有限公司 | High-precision primary side control LED constant current driving circuit for realizing line voltage compensation |
| CN203748061U (en) * | 2014-01-22 | 2014-07-30 | 刘胜泉 | Novel driver used for induction LED |
| CN204145851U (en) * | 2014-11-05 | 2015-02-04 | 西安路方电子科技有限公司 | A kind of LED drive power |
| CN204104200U (en) * | 2014-11-13 | 2015-01-14 | 周艳艳 | A kind of Novel light-operated LED drive circuit |
| CN106545762A (en) * | 2016-08-31 | 2017-03-29 | 刘达 | A kind of light-operated LED lamp tube |
| CN106793339A (en) * | 2017-02-06 | 2017-05-31 | 苏州智浦芯联电子科技股份有限公司 | Self adaptation line voltage compensation LED drive circuit based on primary side feedback |
| CN106973461A (en) * | 2017-05-05 | 2017-07-21 | 电子科技大学 | A kind of LED drive circuit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110351922A (en) * | 2019-05-30 | 2019-10-18 | 鹰潭阳光照明有限公司 | A kind of intelligence light-adjustable LED lamp |
| CN111405717A (en) * | 2020-02-21 | 2020-07-10 | 浙江阳光照明电器集团股份有限公司 | L ED lamp circuit with human body induction function |
| CN111467519A (en) * | 2020-03-23 | 2020-07-31 | 浙江阳光照明电器集团股份有限公司 | Ultraviolet light disinfection lamp circuit |
| CN111467519B (en) * | 2020-03-23 | 2021-06-15 | 浙江阳光照明电器集团股份有限公司 | Ultraviolet light disinfection lamp circuit |
| CN113038660A (en) * | 2021-04-21 | 2021-06-25 | 嘉兴市光泰照明有限公司 | LED turns to auxiliary lighting lamp control circuit |
| CN113038660B (en) * | 2021-04-21 | 2023-08-29 | 嘉兴市光泰照明有限公司 | LED turns to auxiliary lighting lamp control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109769321B (en) | 2021-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109769321A (en) | A kind of LED lamp circuit with Delayed extinguishing function | |
| CN103442501B (en) | Forced constant flow source dimming LED (Light Emitting Diode) lamp | |
| CN101888730B (en) | Alternating current constant current source LED driving circuit | |
| CN206212329U (en) | A kind of LED drive circuit | |
| CN101657057A (en) | LED power circuit | |
| CN104918387B (en) | A kind of LED light device of exchange driving | |
| CN101437342A (en) | Low energy consumption monopole electronic switching circuit and micro energy consumption brightening circuit of indicating lamp | |
| CN201550315U (en) | LED driving circuit | |
| CN107148132B (en) | Single live wire on-state power taking circuit | |
| CN107734778A (en) | LED drive power circuit and luminaire | |
| CN204795739U (en) | LED street lamp controller and LED lighting device | |
| CN206629299U (en) | A kind of Projecting Lamp infrared sensing switch | |
| CN206602702U (en) | Electric ballast and UV lamp | |
| CN205124073U (en) | Utilize switch to realize circuit and lamps and lanterns of adjusting luminance | |
| CN212163763U (en) | Silicon controlled rectifier dimming control circuit | |
| CN205005320U (en) | Driving circuit of light -emitting diode (LED) fluorescent tube | |
| CN108040400A (en) | LED drive circuit and LED lamp | |
| CN208739455U (en) | LED touch dimmer temperature driving power | |
| CN203761636U (en) | Universal alternating-current LED lamp | |
| CN208402161U (en) | A kind of color-temperature regulating LED lamp panel with power failure memory function | |
| CN201509348U (en) | LED power circuit | |
| CN206596269U (en) | Dimmable LED drive control circuit | |
| CN209627743U (en) | A kind of LED daylight lamp of compatible ballast | |
| CN205071382U (en) | Intelligence emergency light device | |
| CN210986524U (en) | Linear L ED lamp circuit with dimming function |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201116 Address after: Room 2107, Kechuang building, 683 Yangming North Road, Yuecheng District, Shaoxing City, Zhejiang Province Applicant after: Shaoxing Jiuyue Electronic Technology Co., Ltd Address before: 312000 Taoyan Village No. 465, Taoyan Town, Yuecheng District, Shaoxing City, Zhejiang Province Applicant before: SHAOXING JIUXIN ELECTRONIC SCI-TECH Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |