CN108575004B - Dimming drive circuit - Google Patents
Dimming drive circuit Download PDFInfo
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- CN108575004B CN108575004B CN201710130744.9A CN201710130744A CN108575004B CN 108575004 B CN108575004 B CN 108575004B CN 201710130744 A CN201710130744 A CN 201710130744A CN 108575004 B CN108575004 B CN 108575004B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
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- 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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Abstract
The embodiment of the invention provides a dimming driving circuit, which comprises a battery pack, a main control circuit, a floodlight driving circuit, a spotlight driving circuit, a first switch control circuit, a second switch control circuit, a first LED load and a second LED load; the master control circuit is used for generating a first PWM signal according to the received first control signal output by the first switch control circuit and outputting the first PWM signal to the floodlight driving circuit; the floodlight driving circuit is used for receiving and adjusting the duty ratio of the first PWM signal to obtain a first constant current driving signal so as to drive the first LED load to carry out floodlight illumination; similarly, the main control circuit is further configured to perform relevant adjustment processing on a second control signal output by the second switch control circuit to obtain a second constant current driving signal, so as to drive the second LED load to perform spotlight illumination. The invention can meet the dimming requirement of users and save energy.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a dimming driving circuit.
Background
Under the condition that energy is increasingly tense, energy conservation of lamps is more and more concerned by people. In order to save energy, the common energy-saving lamp replaces an incandescent lamp, the development is rarely carried out towards the dimming technology, and the energy is saved by adjusting the brightness of the lamp. Lamps appearing in the market at present generally have a light condensation function, for example, lamps 5130, 6121, 6211 and the like, and when a user uses the lamps to work, the user is generally influenced by strong light beams emitted by the lamps, the light beams directly irradiate human eyes, so that the user feels discomfort such as dazzling and the like, and the working efficiency of the user is influenced; the dimming requirement of the user cannot be met, and the user experience is poor.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a dimming driving circuit, which can realize automatic adjustment of the brightness of a lamp, save energy, and meet the dimming requirement of a user, thereby improving the user experience.
In a first aspect, an embodiment of the present invention discloses a dimming driving circuit, including: the LED lamp comprises a battery pack, a main control circuit, a floodlight driving circuit, a spotlight driving circuit, a first switch control circuit, a second switch control circuit, a first LED load and a second LED load; the battery pack is electrically connected with the main control circuit, the floodlight driving circuit and the spotlight driving circuit respectively; the master control circuit is respectively electrically connected with the floodlight driving circuit, the spotlight driving circuit, the first switch control circuit and the second switch control circuit, the floodlight driving circuit is electrically connected with the first LED load, and the spotlight driving circuit is electrically connected with the second LED load;
the battery pack is used for providing working voltage for the dimming driving circuit;
the first switch control circuit is used for outputting a first control signal;
the master control circuit is used for receiving the first control signal, generating a first PWM signal according to the first control signal, and outputting the first PWM signal to the floodlight driving circuit;
the floodlight driving circuit is used for receiving the first PWM signal, adjusting the duty ratio of the first PWM signal to obtain a first constant current driving signal, and driving the first LED load to carry out floodlight illumination through the first constant current driving signal;
the second switch control circuit is used for outputting a second control signal;
the main control circuit is further configured to receive the second control signal, generate a second PWM signal according to the second control signal, and output the second PWM signal to the light condensing drive circuit;
and the light condensation driving circuit is used for receiving the second PWM signal, adjusting the duty ratio of the second PWM signal to obtain a second constant current driving signal, and driving the second LED load to carry out light condensation illumination through the second constant current driving signal.
Optionally, the dimming driving circuit further includes: the battery pack is electrically connected with the main control circuit through the electric quantity display circuit,
the electric quantity display circuit is used for detecting the residual electric quantity of the battery pack according to the indication of the electric quantity detection signal output by the main control circuit and displaying the residual electric quantity;
the electric quantity display circuit comprises a first field effect transistor, a first resistor and a second resistor; the drain electrode of the first field effect transistor is connected with the battery pack, and the grid electrode of the first field effect transistor is electrically connected with the main control circuit; the source electrode of the first field effect transistor is electrically connected with one end of the first resistor, the other end of the first resistor is electrically connected with one end of the second resistor, the other end of the first resistor and one end of the second resistor are electrically connected with the main control circuit, and the other end of the second resistor is connected with the ground.
With reference to the first aspect, in some possible implementations, the dimming driving circuit further includes: the battery charging circuit is electrically connected with the battery pack and the main control circuit respectively;
the battery charging circuit is used for sending a charging detection signal to the main control circuit when the battery pack is charged;
the main control circuit is further used for determining that the battery pack is being charged according to the charging detection signal;
the battery charging circuit comprises a first triode, a third resistor and a fourth resistor, wherein the base of the first triode is connected with the external power supply and the battery pack electrically connected with the third resistor respectively, the base of the first triode is connected with the ground through the fourth resistor, the collector of the first triode is connected with the main control circuit electrically connected with the ground, and the transmitter of the first triode is connected with the ground.
With reference to the first aspect, in some possible implementations, the dimming driving circuit further includes: the on-off control circuit is electrically connected with the main control circuit and the light-gathering drive circuit respectively;
the on-off control circuit is used for controlling the on-off of the light condensation driving circuit according to the indication of the on-off detection signal output by the main control circuit;
the on-off control circuit comprises a second triode and a second field effect transistor, the base of the second triode is electrically connected with the main control circuit, the collector of the second triode is electrically connected with the grid of the second field effect transistor, the drain of the second field effect transistor is electrically connected with the battery pack, and the source of the second field effect transistor is electrically connected with the light gathering driving circuit.
In some possible implementation manners with reference to the first aspect, the first switch control circuit includes a first switch, the second switch control circuit includes a second switch, the main control circuit includes a single chip, and the single chip includes a first pin and a second pin; the first pin is connected with the ground through the first switch, and the second pin is connected with the ground through the second switch.
With reference to the first aspect, in some possible implementation manners, the main control circuit is further configured to detect a number of times that the first switch is pressed, and send a first pressing number notification signal to the floodlight driving circuit;
the floodlight driving circuit is further configured to receive the first pressing frequency notification signal, determine the pressed frequency of the first switch, and adjust the duty ratio of the first PWM signal according to the pressed frequency of the first switch to obtain the first constant current driving signal;
the pressed times of the different first switches correspond to the different first constant current driving signals.
With reference to the first aspect, in some possible implementation manners, optionally, the main control circuit is further configured to detect a number of times that the second switch is pressed, and send a second pressing number notification signal to the light condensing driving circuit;
the light gathering driving circuit is further configured to receive the second push frequency notification signal, determine the number of times of the second switch is pushed, and adjust the duty ratio of the second PWM signal according to the number of times of the second switch is pushed to obtain the second constant current driving signal;
and the pressed times of different second switches correspond to different second constant current driving signals.
In some possible implementations with reference to the first aspect, the main control circuit is further configured to determine a waveform of the second PWM signal according to the number of times the second switch is pressed;
wherein the waveform of the second PWM signal includes at least a square wave and a non-square wave.
With reference to the first aspect, in some possible implementations, the floodlight driving circuit includes: the circuit comprises a reverse amplification unit, a first inductor, a first diode, a first capacitor, a fifth resistor, a sixth resistor and a seventh resistor; the main control circuit is electrically connected with the first LED load through the fifth resistor, and the first LED load is connected with the ground through the sixth resistor and the seventh resistor respectively;
the reverse amplification unit is electrically connected with the first LED load through the first inductor, the reverse amplification unit and the first inductor are connected with the ground through the first diode, and the first inductor and the first LED load are connected with the ground through the first capacitor.
With reference to the first aspect, in some possible implementations, the light condensing driving circuit includes: the switch control unit passes through the second inductor with second LED load electric connection, the switch control unit with the second inductor passes through second diode and earth electric connection, the second inductor with the second LED load passes through the second capacitor is connected with earth, just the eighth resistance with the ninth resistance is parallelly connected, the switch control unit with the second LED load passes through the eighth resistance or the ninth resistance is connected with earth.
In a second aspect, the embodiment of the present invention also discloses a dimming driving apparatus, where the apparatus includes the dimming driving circuit provided in any one of the above first aspects.
It can be seen that the dimming driving circuit in the technical scheme of the embodiment of the invention comprises a battery pack, a main control circuit, a floodlight driving circuit, a spotlight driving circuit, a first switch control circuit, a second switch control circuit, a first LED load and a second LED load; the master control circuit is used for generating a first PWM signal according to the received first control signal output by the first switch control circuit and outputting the first PWM signal to the floodlight driving circuit; the floodlight driving circuit is used for receiving and adjusting the duty ratio of the first PWM signal to obtain a first constant current driving signal so as to drive the first LED load to carry out floodlight illumination; similarly, the main control circuit is further configured to perform relevant adjustment processing on a second control signal output by the second switch control circuit to obtain a second constant current driving signal, so as to drive the second LED load to perform spotlight illumination; therefore, the automatic adjustment of the brightness of the lamp can be realized, the energy is saved, the dimming requirement of a user is met, and the user experience is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dimming driving circuit according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of another dimming driving circuit according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a master control circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a voltage conversion circuit according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a power display circuit according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a battery charging circuit according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a first switch control circuit according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a second switch control circuit according to an embodiment of the present invention;
fig. 9 is a schematic wiring diagram of a floodlight driving circuit according to an embodiment of the present invention;
fig. 10 is a schematic wiring diagram of a light condensing driving circuit according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a connection of an on/off control circuit according to an embodiment of the present invention;
fig. 12 is a schematic wiring diagram of a dimming driving circuit according to a third embodiment of the present invention;
fig. 13 is a schematic wiring diagram of an LED load according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," and "third" (if any) in the description and claims of the invention and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Referring to fig. 1, a dimming driving circuit according to a first embodiment of the present invention includes: the system comprises a battery pack 101, a main control circuit 102, a floodlight driving circuit 103, a spotlight driving circuit 104, a first switch control circuit 105, a second switch control circuit 106, a first LED load 107 and a second LED load 108; the battery pack 101 is electrically connected to the main control circuit 102, the floodlight driving circuit 103 and the spotlight driving circuit 104 respectively; the main control circuit 102 is electrically connected to the floodlight driving circuit 103, the spotlight driving circuit 104, the first switch control circuit 105 and the second switch control circuit 106, respectively, the floodlight driving circuit 103 is electrically connected to the first LED load 107, and the spotlight driving circuit 104 is electrically connected to the second LED load 108;
the battery pack 101 is used for providing working voltage for the dimming driving circuit;
the first switch control circuit 105 is configured to output a first control signal;
the main control circuit 102 is configured to receive the first control signal, generate a first PWM signal according to the first control signal, and output the first PWM signal to the floodlight driving circuit;
the floodlight driving circuit 103 is configured to receive the first PWM signal, adjust a duty ratio of the first PWM signal to obtain a first constant current driving signal, and drive the first LED load 107 through the first constant current driving signal to perform floodlight illumination;
the second switch control circuit 106 is configured to output a second control signal;
the main control circuit 102 is further configured to receive the second control signal, generate a second PWM signal according to the second control signal, and output the second PWM signal to the light condensing drive circuit;
the light condensation driving circuit 104 is configured to receive the second PWM signal, adjust a duty ratio of the second PWM signal to obtain a second constant current driving signal, and drive the second LED load 108 to perform light condensation lighting through the second constant current driving signal.
It can be seen that the dimming driving circuit in the technical scheme of the embodiment of the invention comprises a battery pack, a main control circuit, a floodlight driving circuit, a spotlight driving circuit, a first switch control circuit, a second switch control circuit, a first LED load and a second LED load; the master control circuit is used for generating a first PWM signal according to the received first control signal output by the first switch control circuit and outputting the first PWM signal to the floodlight driving circuit; the floodlight driving circuit is used for receiving and adjusting the duty ratio of the first PWM signal to obtain a first constant current driving signal so as to drive the first LED load to carry out floodlight illumination; similarly, the main control circuit is further configured to perform relevant adjustment processing on a second control signal output by the second switch control circuit to obtain a second constant current driving signal, so as to drive the second LED load to perform spotlight illumination; therefore, the automatic adjustment of the brightness of the lamp can be realized, the energy is saved, the dimming requirement of a user is met, and the user experience is improved.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a dimming driving circuit according to a second embodiment of the present invention, and the dimming driving circuit shown in fig. 2 is developed based on the dimming driving circuit shown in fig. 1. As shown in fig. 2, the dimming driving circuit in the embodiment of the present invention includes: the LED spotlight driving circuit comprises a battery pack 101, a main control circuit 102, a floodlight driving circuit 103, a spotlight driving circuit 104, a first switch control circuit 105, a second switch control circuit 106, a first LED load 107 and a second LED load 108.
Optionally, the dimming driving circuit further includes a power display circuit 109, the battery pack 101 is electrically connected to the main control circuit 102 through the power display circuit 109,
the electric quantity display circuit 109 is configured to detect the remaining electric quantity of the battery pack according to an indication of the electric quantity detection signal output by the main control circuit 102, and display the remaining electric quantity;
the electric quantity display circuit comprises a first field effect transistor, a first resistor and a second resistor; the drain electrode of the first field effect transistor is connected with the battery pack, and the grid electrode of the first field effect transistor is electrically connected with the main control circuit; the source electrode of the first field effect transistor is electrically connected with one end of the first resistor, the other end of the first resistor is electrically connected with one end of the second resistor, the other end of the first resistor and one end of the second resistor are electrically connected with the main control circuit, and the other end of the second resistor is connected with the ground.
Optionally, the dimming driving circuit may further include: a battery charging circuit 110, wherein the battery charging circuit 110 is electrically connected to the battery pack 101 and the main control circuit 102 respectively;
the battery charging circuit 110 is configured to send a charging detection signal to the main control circuit 102 when the battery pack 101 is charged;
the main control circuit 102 is further configured to determine that the battery pack 101 is being charged according to the charging detection signal;
the battery charging circuit comprises a first triode, a third resistor and a fourth resistor, wherein the base of the first triode is connected with the external power supply and the battery pack electrically connected with the third resistor respectively, the base of the first triode is connected with the ground through the fourth resistor, the collector of the first triode is connected with the main control circuit electrically connected with the ground, and the transmitter of the first triode is connected with the ground.
Optionally, the dimming driving circuit may further include: the on-off control circuit 111, the on-off control circuit 111 is electrically connected with the main control circuit 102 and the light-gathering drive circuit 104 respectively;
the on-off control circuit 111 is configured to control on-off of the light condensation driving circuit 104 according to an on-off detection signal output by the main control circuit 102;
the on-off control circuit comprises a second triode and a second field effect transistor, the base of the second triode is electrically connected with the main control circuit, the collector of the second triode is electrically connected with the grid of the second field effect transistor, the drain of the second field effect transistor is electrically connected with the battery pack, and the source of the second field effect transistor is electrically connected with the light gathering driving circuit.
Optionally, the dimming driving circuit may further include: the battery pack 101 is electrically connected to each circuit of the dimming driving circuit through the voltage conversion circuit 112, that is, the voltage conversion circuit 112 is electrically connected to the main control circuit 102, the floodlight driving circuit 103, the spotlight driving circuit 104, the first switch control circuit 105, the second switch control circuit 106, the electric quantity display circuit 109, the battery charging circuit 110, and the on-off control circuit 111. The voltage conversion circuit 112 is configured to perform voltage conversion on the output voltage provided by the battery pack 101 to obtain an operating voltage suitable for the dimming driving circuit.
Fig. 3 to 11 show schematic connection diagrams of related circuits in a dimming driving circuit according to a second embodiment of the present invention.
It can be seen that the dimming driving circuit in the technical scheme of the embodiment of the invention comprises a battery pack, a main control circuit, a floodlight driving circuit, a spotlight driving circuit, a first switch control circuit, a second switch control circuit, a first LED load and a second LED load; the master control circuit is used for generating a first PWM signal according to the received first control signal output by the first switch control circuit and outputting the first PWM signal to the floodlight driving circuit; the floodlight driving circuit is used for receiving and adjusting the duty ratio of the first PWM signal to obtain a first constant current driving signal so as to drive the first LED load to carry out floodlight illumination; similarly, the main control circuit is further configured to perform relevant adjustment processing on a second control signal output by the second switch control circuit to obtain a second constant current driving signal, so as to drive the second LED load to perform spotlight illumination; therefore, the automatic adjustment of the brightness of the lamp can be realized, the energy is saved, the dimming requirement of a user is met, and the user experience is improved.
The following describes each circuit related to the dimming driving circuit in detail.
Specifically, as shown in fig. 3, fig. 3 is a schematic structural diagram of a main control circuit in the first and second embodiments of the present invention. The master control circuit 102 includes a single chip microcomputer U1 having 16 pins, and the single chip microcomputer is used for generating and outputting two PWM signals, i.e., a first PWM signal PWM1 and a second PWM signal PWM 2. As can be seen from the figure, the 16-pin PWM1 of the U1 is used for outputting a first PWM signal (PWM1), the 4-pin PWM2 of the U1 is used for outputting a second PWM signal (PWM2), and the 12 pin of the U1 single chip microcomputer is connected to a 5V voltage source and the 5 pin of the U1 is grounded.
The single chip microcomputer (U1) can be an SP-16-004B chip or other chips with the equivalent functions of SP-16-004B, and the embodiment of the invention is not limited.
As shown in fig. 4, fig. 4 is a schematic wiring diagram of the voltage conversion circuit in the first and second embodiments of the present invention. The voltage conversion circuit 112 includes a buck regulator unit U2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, and a sixth capacitor C6. As can be seen, U2 includes three ports, a first input port VIN, an output port OUT, and a ground port GND. Wherein, the first input port VIN of U2 is connected with the positive electrode of the battery pack 101, and the first input port VIN of U2 is connected with ground through C3 and C4, respectively. The output port OUT of U2 is connected to ground through C5 and C6, respectively, the ground port GND of U2 is also connected to ground, and the negative pole of the battery pack 101 is also connected to ground.
It should be understood that the buck-regulator unit U2 may be an HTC7550 chip or another component having a buck-regulator function, and the embodiment of the present invention is not limited thereto.
In a specific implementation, the voltage conversion circuit is configured to convert a voltage output by the battery pack into a predetermined operating voltage, which is shown as 5V, so that the entire dimming driving circuit can operate normally.
As shown in fig. 5, fig. 5 is a schematic wiring diagram of the power display circuit according to the first and second embodiments of the present invention. The electric quantity display circuit 109 includes: the first field effect transistor M1, the first resistor R1 and the second resistor R2; the drain electrode of the first field effect transistor is connected with the anode (BAT +) of the battery pack, and the grid electrode of the first field effect transistor is electrically connected with the main control circuit; the source electrode of the first field effect transistor is electrically connected with one end of the first resistor, the other end of the first resistor is electrically connected with one end of the second resistor, the other end of the first resistor and one end of the second resistor are electrically connected with the main control circuit, and the other end of the second resistor is connected with the ground.
Optionally, the power display circuit further includes: the battery pack comprises a third triode Q3, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12 and a seventh capacitor C7, as well as five LED lamps for displaying the residual capacity of the battery pack and five resistors respectively connected with the five LED lamps in series. As can be seen, the 6 pin P1 of the main control circuit U1 is electrically connected to the base of Q3 through R10, the collector of Q3 is electrically connected to the gate of M1 and one end of R11, the other end of R11 is electrically connected to the positive electrode (BAT +) of the battery pack through R12, the source of M1 is also electrically connected to the positive electrode (BAT +) of the battery pack, and the drain of M1 is electrically connected to the 2 AD2 of R2, U1, and C7 through R1. The 2 pin AD2 of U1 is connected to ground through C7 and R2, respectively. The transmitter of Q3 is also connected to ground.
It should be understood that five rows of the illustrated LEDs 1-5 are electrically connected to the corresponding 9, 10, 11 and 14, 15 pins LED1-LED5 of the main control circuit U1.
Optionally, the battery pack is electrically connected to the main control circuit through the electric quantity display circuit, and the electric quantity display circuit is configured to detect the remaining electric quantity of the battery pack according to an indication of the electric quantity detection signal output by the main control circuit, and display the remaining electric quantity.
In specific implementation, when an electric quantity detection signal output by a pin P1 of a main control circuit U1 is a high-level signal, Q3 and M1 are conducted to work, the residual electric quantity at two ends of a battery pack is detected, and the residual electric quantity of the battery pack is displayed through 5 LED lamps; similarly, when the power detection signal output from the pin P1 of the main control circuit U1 is a low level signal, the Q3 and the M1 are turned off, and the power display circuit is turned off and does not operate.
As shown in fig. 6, fig. 6 is a schematic wiring diagram of the battery charging circuit in the first and second embodiments of the present invention. The battery charging circuit 110 includes: first triode Q1, third resistance R3 and fourth resistance R4, the base of first triode passes through the third resistance respectively with external power supply with group battery electric connection, just the base of first triode passes through the fourth resistance is connected with ground, the collecting electrode of first triode with master control circuit electric connection, the transmitter of first triode is connected with ground.
Optionally, the battery charging circuit further comprises: thirteenth resistor R13 and eighth capacitor C8. As can be seen, one end of R3 is electrically connected to the positive electrode (BAT +) of the battery pack, the other end of R3 is electrically connected to the base of Q1, and R3 is connected to ground through R4. The collector of the Q1 is electrically connected with the 3 pin D1 of the main control circuit U1, the collector of the Q1 is connected with the ground through the C8, the collector of the Q1 is electrically connected with the 5V voltage source through the R13, and the transmitter of the Q1 is connected with the ground.
Optionally, the battery charging circuit further comprises: the isolation unit comprises two diodes D3 and D4, the diodes D3 and D4 are connected in parallel, and the R9 is electrically connected with the anode (BAT +) of the battery pack through the parallel diodes D3 and D4.
Optionally, the battery charging circuit is electrically connected to the battery pack and the main control circuit respectively; the battery charging circuit is used for sending a charging detection signal to the main control circuit when the battery pack is charged; the main control circuit is further used for determining that the battery pack is being charged according to the charging detection signal.
In specific implementation, when the external power supply charges the battery pack 101, the Q5 is turned on, and a charging detection signal is sent to the main control circuit U1 through the 3 pin D1 of the U1, and at this time, the charging detection signal is a high level signal, which indicates that the external power supply is charging the battery pack.
As shown in fig. 7, fig. 7 is a wiring diagram of a first switch control circuit in the first and second embodiments of the present invention. The first switch control circuit 105 includes: the first switch SW1 optionally further includes a ninth capacitor C9 and a fourteenth resistor R14. As can be seen, the 8 pin (first pin) K1 of U1 is connected to ground through SW1 and C9, respectively, and K1 is also electrically connected to a +5V voltage source through R14.
In a specific implementation, whether the floodlight driving circuit works or not is determined by detecting the number of pressing times of the SW1 switch, and the floodlight driving circuit adjusts the duty ratio of the PWM1 signal to output first constant current driving signals with different current magnitudes so as to drive the first LED load to carry out floodlight illumination.
Similarly, as shown in fig. 8, fig. 8 is a schematic wiring diagram of a second switch control circuit in the first and second embodiments of the present invention. The second switch control circuit 106 includes: the second switch SW2 optionally further includes a tenth capacitor C10, an eleventh capacitor C11 and a fifteenth resistor R15. As can be seen, pin 13 (second pin) K2 of U1 is connected to ground through SW2, C10 and C11, respectively, and K2 is also electrically connected to a +5V voltage source through R15.
In a specific implementation, whether the spotlight driving circuit works or not is determined by detecting the number of times of pressing the switch SW2, and the spotlight driving circuit adjusts the duty ratio of the PWM2 signal to output a second constant current driving signal with different current magnitude so as to drive a second LED load to perform spotlight illumination. Optionally, it may also be determined whether the waveform of the PWM2 output by the master control circuit U1 is a square wave or a non-square wave such as a sine wave, a cosine wave, etc.
Fig. 9 is a schematic wiring diagram of the floodlight driving circuit according to the first and second embodiments of the present invention, as shown in fig. 9. The floodlight driving circuit 103 comprises: the circuit comprises a reverse amplification unit U3, a first inductor L1, a first diode D1, a first capacitor C1, a fifth resistor R5, a sixth resistor R6 and a seventh resistor R7; the main control circuit 102 is electrically connected to the first LED load 107 through the fifth resistor R5, and the first LED load 107 is connected to ground through the sixth resistor R6 and the seventh resistor R7, respectively;
the reverse amplification unit U3 is electrically connected to the first LED load 107 through the first inductor L1, the reverse amplification unit U3 and the first inductor L1 are connected to the ground through the first diode D1, and the first inductor L1 and the first LED load 107 are connected to the ground through the first capacitor C1.
It should be understood that the inverting amplification unit U3 may be a 4435 or 9435 chip, or other chips of an equivalent PMOS fet, and the embodiments of the present invention are not limited thereto.
Optionally, the floodlight driving circuit 103 may further include: the circuit comprises a fifth triode Q5, a sixth triode Q6, a seventh triode Q7, a sixteenth resistor R16, a seventeenth resistor, an eighteenth resistor, an eleventh capacitor C11 and a twelfth capacitor C12. The direction amplification unit U3 includes at least 3 ports, an S port, a D port, and a G port. As can be seen, the 16-pin PWM1 of the U1 is electrically connected to the base of Q4 through R16, the emitter of Q4 is connected to ground, and the collector of Q4 is electrically connected to the base of Q5, the base of Q6, and one end of R17, respectively. The emitter of Q5 is electrically connected with the collector of Q6, the emitter of Q5 and the collector of Q6 are both electrically connected with the G port of U3, and the emitter of Q6 is connected with the ground through R18. The collector of Q5, the other end of R17, and the S port of U3 are electrically connected to the positive electrode of the battery pack (BAT +), respectively, which may also be connected to ground through C1. The D port of the U3 is electrically connected to one end of the first LED load port P1 through the L1, and the first LED load port P1 is connected to the first LED load 107. The D port of U3 is connected to ground through D1 and L1 is connected to ground through C1. The other end of the first LED load interface P1 is connected to ground through R6 and R7, respectively, and R6 and R7 are connected in parallel. The other end of the first LED load interface P1 is electrically connected to the 1 pin AD1 of U1 through R5, and the 1 pin AD1 of U1 is connected to ground through C12.
Optionally, the main control circuit is further configured to detect a number of times that the first switch is pressed, and send a first pressing number notification signal to the floodlight driving circuit; the floodlight driving circuit is further used for receiving the first pressing frequency notification signal, determining the pressed frequency of the first switch, and adjusting the duty ratio of the first PWM signal according to the pressed frequency of the first switch to obtain the first constant current driving signal; the pressed times of the different first switches correspond to the different first constant current driving signals.
It should be understood that the first pressing number notification signal and the first control signal may be the same signal or different signals. If the signals are the same, the signals carry the pressed times of the first switch and indication information indicating that the main control circuit U1 generates the first PWM signal.
In a specific implementation, when the U1 detects that the SW1 is pressed, count the pressed times of the SW1, and if the pressed times of the SW1 is not the preset first threshold (the off times, for example, 3 times), the U1 outputs a first PWM signal (PWM1) through the 16 pins. The U1 singlechip samples the voltage Uref1 at the two ends of R5 and R6, compares Uref1 with a first set voltage (such as 1.25V) prestored in U2, when Uref is greater than the first set voltage, the floodlight driving circuit reduces the duty ratio of a first PWM signal through adjustment so as to reduce output current, ensures that the output power input to the first LED load interface P1 is a first constant circuit (such as 1.5A), and finally obtains a first constant driving signal through adjustment so as to serve as a driving signal of the first LED load to enable the first LED load to carry out floodlight illumination. Similarly, when Uref1 is smaller than the first set voltage, the floodlight driving circuit increases the duty ratio of the first PWM signal by adjustment to increase the output current, so as to ensure that the output current input to the first LED load interface P1 is the first constant current (for example, 1.5A), and the first constant driving signal is finally obtained by adjustment to be used as the driving signal of the first LED load, so that the first LED load performs floodlight illumination.
Optionally, the user can also select the first constant driving signal of different constant current magnitudes output by the floodlight driving circuit by pressing the SW1 for different times, so as to realize that the first LED load performs floodlight illumination with different brightness, which can be strong or weak.
Illustratively, when the SW1 is pressed once, the duty ratio of the first PWM signal is adjusted through the floodlight driving circuit, and the current magnitude of the output first constant driving signal is I11(ii) a When SW1 is pressed twice, the current of the first constant drive signal outputted by the floodlight drive circuit corresponding to the adjustment is largeIs as small as I12(ii) a When the SW1 is pressed three times, the current of the first constant driving signal output by the floodlight driving circuit is correspondingly adjusted to be I13Wherein, I11<I12<I13(ii) a That is, as the number of user presses against SW1 increases, the intensity of the flood lighting corresponding to the first LED load becomes greater and greater. When SW1 is pressed down a set number of times (e.g., four times), the floodlight driving circuit does not operate, i.e., the floodlight lighting that does not turn on (off) the first LED load.
It should be understood that the waveform of the first PWM signal (PWM1) may be a square wave, a sawtooth wave, a sine wave, a cosine wave, or other waveforms, and the embodiments of the present invention are not limited thereto.
As shown in fig. 10, fig. 10 is a wiring diagram of the light condensing driving circuit in the first and second embodiments of the present invention. The light condensing drive circuit 104 includes: the switch control unit U4, the second inductor L2, the second diode D2, the second capacitor C2, the eighth resistor R8 and the ninth resistor R9, the switch control unit U4 is electrically connected to the second LED load 108 through the second inductor L2, the switch control unit U4 and the second inductor L2 are electrically connected to the ground through the second diode D2, the second inductor L2 and the second LED load 108 are connected to the ground through the second capacitor C2, the eighth resistor R8 is connected to the ninth resistor R9 in parallel, and the switch control unit U4 and the second LED load 108 are connected to the ground through the eighth resistor R8 or the ninth resistor R9.
It should be understood that the switch control unit U4 may be a 4001 chip or a chip with an equivalent function of controlling on/off of a MOS field effect transistor, and the embodiment of the present invention is not limited.
Optionally, the spotlight driving circuit 104 further includes: a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21 and a thirteenth capacitor C13. The switch control unit at least comprises 6 ports, a second input port VIN, a switch port SW, an enable port EN, a chip select port CS, a feedback port FB and a ground port GND. As can be seen, the 6 pin P1 of U1 is electrically connected to the second input port VIN of U4, the enable port EN of U4 is electrically connected to the 4 pin PWM2 of U1, and the EN and PWM2 ports are electrically connected to the 5V voltage source through R19. The switch port SW of U4 is electrically connected to one end of the second LED load interface P2 through L2. The second LED load interface P2 is subsequently connected to a second LED load. The switch port SW of U4 is electrically connected to one end of L2, and is connected to ground through D2. The other end of L2 is connected to ground through C13 and C2, respectively. The other end of L2 is electrically connected to one end of P2 and one end of R20. The other end of R20 is connected to ground through R21. The chip selection port CS of U4 is electrically connected with the other end of P2, and the other ends of the chip selection port CS of U4 and P2 can be respectively connected with the ground through R8 and/or R9, and R8 and R9 are connected in parallel. The ground port GND of U4 is connected to ground. The feedback port FB of the U4 is electrically connected with the other end of the R20 and one end of the R21.
Optionally, the main control circuit is further configured to detect a number of times that the second switch is pressed, and send a second pressing number notification signal to the light condensing drive circuit; the light gathering driving circuit is further used for receiving the second pressing frequency notification signal, determining the pressed frequency of the second switch, and adjusting the duty ratio of the second PWM signal according to the pressed frequency of the second switch to obtain a second constant current driving signal; and the pressed times of different second switches correspond to different second constant current driving signals.
Optionally, the main control circuit is further configured to determine a waveform of the second PWM signal according to the number of times the second switch is pressed; wherein the waveform of the second PWM signal includes at least a square wave and a non-square wave.
It should be understood that the second pressing number notification signal and the second control signal may be the same signal or different signals. If the signals are the same, the signals carry the pressed times of the second switch and indication information indicating that the main control circuit U1 generates the second PWM signal.
In a specific implementation, when the U1 detects that the SW2 is pressed, count the pressed times of the SW2, and if the pressed times of the SW2 is not a preset second threshold (the off times, for example, 4 times), the U1 outputs a second PWM signal (PWM2) through 4 pins. The chip select port CS of the U4 detects and collects power supply Uref2 at two ends of R8 and R9, and compares the reference source power supply (second set voltage) inside Uref2 and U4; when Uref2 ″ is at the second setting voltage, the duty ratio of the second PWM signal is decreased to decrease the output current, so as to ensure that the output current inputted to the second LED load interface P2 is the second constant current (e.g., 2.0A), and the second constant driving signal is finally obtained after adjustment to be used as the driving signal of the second LED load, so that the second LED load performs spotlight illumination. Similarly, when Uref2 is smaller than the second set voltage, the spotlight driving circuit increases the duty ratio of the second PWM signal by adjustment to increase the output current, so as to ensure that the output current input to the second LED load interface P1 is the second constant circuit (e.g., 2.0A), and the second constant driving signal is finally obtained by adjustment to be used as the driving signal of the second LED load, so that the second LED load performs floodlight illumination.
Optionally, the user can also select the second constant driving signal of different constant current magnitude outputted by the floodlight driving circuit by pressing SW2 for different times, so as to realize that the second LED load performs spotlighting with different brightness, which can be strong or weak.
Alternatively, the user may also select/determine that the waveform of the second PWM signal (PWM2) output by the U1 is different according to the number of times the SW2 is pressed, so as to implement the blinking spotlight lighting of the set frequency or the blinking-free spotlight lighting by the second LED load.
For example, when the SW2 is pressed once, the waveform of the second PWM signal (PWM2) output by the U1 through the 4-pin PWM2 is a sine wave, and if the light condensing drive circuit is turned on, the duty ratio of the PWM2 is adjusted accordingly through the light condensing drive circuit, and the current magnitude of the finally output second constant current drive signal is I21(ii) a Similarly, when the SW2 is pressed twice, the waveform of the PWM2 signal generated and output by the U1 is a sine wave, and the current magnitude of the second constant current driving signal output after the duty ratio of the PWM2 is adjusted by the spotlight driving circuit is I22(ii) a When the SW2 is pressed three times, the waveform of the PWM2 signal generated and output by the U1 is square wave, and the current of the second constant current driving signal output after the duty ratio of the PWM2 is adjusted by the spotlight driving circuitSize I23In which I21<I22<I23. Therefore, as the number of times SW2 is pressed by the user increases, the higher the current of the second constant current driving signal provided by the dimming driving circuit to the second LED load, the brighter the second LED load performs spotlight illumination; moreover, it can be known that the user can also adjust the U1 to output the PWM2 signal with different waveforms by pressing the SW2 for different times, that is, the waveform of the second constant current driving signal provided by the dimming driving circuit for the second LED load is changed by pressing the SW2 for different times, for example, the SW2 is pressed for three times to control the second LED load to perform the blinking spotlight illumination with the set frequency; when SW2 is pressed once or twice, the second LED load is controlled to perform spot lighting, but the second LED load is controlled to perform spot lighting at a higher brightness than the first LED load when the second pressing is performed.
Similarly, it may be set that when the number of times SW2 is pressed by the user reaches a set number of times (e.g., four times), the spotlight driving circuit does not operate, that is, the spotlight lighting of the second LED load is not turned on (off).
It should be understood that the waveform of the second PWM signal (PWM2) may be a square wave, a sawtooth wave, a sine wave, a cosine wave, or other waveforms, and the embodiments of the present invention are not limited thereto.
As shown in fig. 11, fig. 11 is a schematic wiring diagram of the on-off control circuit in the first and second embodiments of the present invention. The on-off control circuit 111 includes: the base electrode of the second triode is electrically connected with the main control circuit, the collector electrode of the second triode is electrically connected with the grid electrode of the second field-effect tube, the drain electrode of the second field-effect tube is electrically connected with the battery pack, and the source electrode of the second field-effect tube is electrically connected with the light-gathering driving circuit.
Optionally, the on-off control circuit further includes: a twenty-second resistor R22, a twenty-third resistor R23, a fourteenth capacitor C14 and a fifteenth capacitor C15. As can be seen, the 6-pin P1 of U1 is electrically connected to the base of Q2 through R23, the emitter of Q2 is connected to ground, the collector of Q2 is electrically connected to the positive electrode (BAT +) of the battery pack through R22, and the collector of Q2 is also electrically connected to the gate of M2. The source electrode of the M2 is electrically connected with the anode (BAT +) of the battery pack, and the drain electrode of the M2 is connected with the ground through C14 and C15 respectively. And the drain of the M2 is also electrically connected to the second input port VIN of the U4.
In a specific implementation, after the SW2 is pressed, a corresponding on-off detection signal is output through a pin P1 6 of the U1, when the on-off detection signal is a high-level signal, Q2 and M2 are turned on, and the U4 and the following BUCK circuits (L2, D2 and C2) are turned on, so that the chip select port CS of the U4 collects the power supply Uref2 at two ends of the R8 and the R9, and the condensing drive circuit performs related duty ratio adjustment on the second PWM signal (PWM2) and the like. Similarly, when the on-off detection signal is a low level signal, Q2 and M2 are turned off, U4 is turned off, the spotlight driving circuit does not operate, and the second LED load cannot be driven to perform corresponding spotlight illumination.
Fig. 12 is a schematic diagram of a dimming driving circuit according to a third embodiment of the present invention. The components or related circuits referred to in the drawings are described with reference to fig. 3 to 11, and are not described again here.
It should be understood that the floodlight driving circuit and the spotlight driving circuit operate independently of each other and do not affect each other. For example, please refer to fig. 13, which shows a schematic wiring diagram of the first LED load and the second LED load. As can be seen from the figure, the first LED load interface P1 is formed by connecting two parallel 19 series LED lamps in series, and the first LED load, that is, two LEDs are connected in parallel two by two and then connected in series, so as to form a series connection of 19 parallel connected LEDs as shown in the figure; a second LED load interface P2 is formed in series with one LED lamp, a second LED load.
Therefore, the dimming driving circuit provided by the embodiment of the invention uses one input and two outputs, adopts two switches to independently control light condensation and flood illumination, also provides the requirements of electric quantity detection and display and charging detection, provides the requirement of one lamp for multiple purposes, and improves the user experience.
Similarly, an embodiment of the present invention may also disclose and provide an electronic device, where the electronic device includes all or part of components in the dimming driving circuit provided in the third embodiment of the present invention shown in fig. 12, and the embodiment of the present invention is not limited.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A dimming driving circuit, comprising: the LED lamp comprises a battery pack, a main control circuit, a floodlight driving circuit, a spotlight driving circuit, a first switch control circuit, a second switch control circuit, a first LED load and a second LED load; the battery pack is electrically connected with the main control circuit, the floodlight driving circuit and the spotlight driving circuit respectively; the master control circuit is respectively electrically connected with the floodlight driving circuit, the spotlight driving circuit, the first switch control circuit and the second switch control circuit, the floodlight driving circuit is electrically connected with the first LED load, and the spotlight driving circuit is electrically connected with the second LED load;
the battery pack is used for providing working voltage for the dimming driving circuit;
the first switch control circuit is used for outputting a first control signal;
the master control circuit is used for receiving the first control signal, generating a first PWM signal according to the first control signal, and outputting the first PWM signal to the floodlight driving circuit;
the floodlight driving circuit is used for receiving the first PWM signal, adjusting the duty ratio of the first PWM signal to obtain a first constant current driving signal, and driving the first LED load to carry out floodlight illumination through the first constant current driving signal;
the second switch control circuit is used for outputting a second control signal;
the main control circuit is further configured to receive the second control signal, generate a second PWM signal according to the second control signal, and output the second PWM signal to the light condensing drive circuit;
and the light condensation driving circuit is used for receiving the second PWM signal, adjusting the duty ratio of the second PWM signal to obtain a second constant current driving signal, and driving the second LED load to carry out light condensation illumination through the second constant current driving signal.
2. The dimming driving circuit according to claim 1, further comprising: the battery pack is electrically connected with the main control circuit through the electric quantity display circuit,
the electric quantity display circuit is used for detecting the residual electric quantity of the battery pack according to the indication of the electric quantity detection signal output by the main control circuit and displaying the residual electric quantity;
the electric quantity display circuit comprises a first field effect transistor, a first resistor and a second resistor; the drain electrode of the first field effect transistor is connected with the battery pack, and the grid electrode of the first field effect transistor is electrically connected with the main control circuit; the source electrode of the first field effect transistor is electrically connected with one end of the first resistor, the other end of the first resistor is electrically connected with one end of the second resistor, the other end of the first resistor and one end of the second resistor are electrically connected with the main control circuit, and the other end of the second resistor is connected with the ground.
3. The dimming driving circuit according to claim 1, further comprising: the battery charging circuit is electrically connected with the battery pack and the main control circuit respectively;
the battery charging circuit is used for sending a charging detection signal to the main control circuit when the battery pack is charged;
the main control circuit is further used for determining that the battery pack is being charged according to the charging detection signal;
the battery charging circuit comprises a first triode, a third resistor and a fourth resistor, wherein the base of the first triode is connected with the external power supply and the battery pack electrically connected with the third resistor respectively, the base of the first triode is connected with the ground through the fourth resistor, the collector of the first triode is connected with the main control circuit electrically connected with the ground, and the transmitter of the first triode is connected with the ground.
4. The dimming driving circuit according to claim 1, further comprising: the on-off control circuit is electrically connected with the main control circuit and the light-gathering drive circuit respectively;
the on-off control circuit is used for controlling the on-off of the light condensation driving circuit according to the indication of the on-off detection signal output by the main control circuit;
the on-off control circuit comprises a second triode and a second field effect transistor, the base of the second triode is electrically connected with the main control circuit, the collector of the second triode is electrically connected with the grid of the second field effect transistor, the drain of the second field effect transistor is electrically connected with the battery pack, and the source of the second field effect transistor is electrically connected with the light gathering driving circuit.
5. The dimming driving circuit according to claim 1, wherein the first switch control circuit comprises a first switch, the second switch control circuit comprises a second switch, the main control circuit comprises a single chip microcomputer, and the single chip microcomputer comprises a first pin and a second pin; the first pin is connected with the ground through the first switch, and the second pin is connected with the ground through the second switch.
6. The dimming driving circuit according to claim 5,
the master control circuit is further used for detecting the pressed times of the first switch and sending a first pressed time notification signal to the floodlight driving circuit;
the floodlight driving circuit is further configured to receive the first pressing frequency notification signal, determine the pressed frequency of the first switch, and adjust the duty ratio of the first PWM signal according to the pressed frequency of the first switch to obtain the first constant current driving signal;
the pressed times of the different first switches correspond to the different first constant current driving signals.
7. The dimming driving circuit according to claim 5,
the main control circuit is further configured to detect the number of times that the second switch is pressed, and send a second pressing number notification signal to the light condensation driving circuit;
the light gathering driving circuit is further configured to receive the second push frequency notification signal, determine the number of times of the second switch is pushed, and adjust the duty ratio of the second PWM signal according to the number of times of the second switch is pushed to obtain the second constant current driving signal;
and the pressed times of different second switches correspond to different second constant current driving signals.
8. The dimming driving circuit according to claim 7,
the master control circuit is further used for determining the waveform of the second PWM signal according to the pressed times of the second switch;
wherein the waveform of the second PWM signal includes at least a square wave and a non-square wave.
9. The dimming driving circuit according to claim 1, wherein the floodlight driving circuit comprises: the circuit comprises a reverse amplification unit, a first inductor, a first diode, a first capacitor, a fifth resistor, a sixth resistor and a seventh resistor; the main control circuit is electrically connected with the first LED load through the fifth resistor, and the first LED load is connected with the ground through the sixth resistor and the seventh resistor respectively;
the reverse amplification unit is electrically connected with the first LED load through the first inductor, the reverse amplification unit and the first inductor are connected with the ground through the first diode, and the first inductor and the first LED load are connected with the ground through the first capacitor.
10. The dimming driving circuit according to claim 1, wherein the condensing driving circuit comprises: the switch control unit passes through the second inductor with second LED load electric connection, the switch control unit with the second inductor passes through second diode and earth electric connection, the second inductor with the second LED load passes through the second capacitor is connected with earth, just the eighth resistance with the ninth resistance is parallelly connected, the switch control unit with the second LED load passes through the eighth resistance or the ninth resistance is connected with earth.
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| CN109654433A (en) * | 2019-01-24 | 2019-04-19 | 上海智汇电器有限公司 | Wireless charging LED straight panel lamp |
| CN110267388B (en) * | 2019-05-16 | 2022-05-13 | 深圳市海洋王石油照明技术有限公司 | High-power intrinsic safety device and explosion-proof lamp |
| CN110531564B (en) * | 2019-07-30 | 2021-10-15 | 惠州Tcl移动通信有限公司 | Flash lamp drive circuit and intelligent terminal |
| CN110493915B (en) * | 2019-08-19 | 2024-01-16 | 深圳市海洋王公消照明技术有限公司 | LED driving device and LED lamp |
| CN110677953B (en) * | 2019-10-18 | 2021-04-27 | 青岛市黄岛区中心医院 | Special arm lamp control circuit for gynecologist and obstetrician |
| CN111511078A (en) * | 2020-03-12 | 2020-08-07 | 深圳市海洋王照明工程有限公司 | Spotlight and floodlight switching control circuit and lamp |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101835308A (en) * | 2010-04-27 | 2010-09-15 | 海洋王照明科技股份有限公司 | Led lamp control circuit and led lamp |
| JP2013131393A (en) * | 2011-12-21 | 2013-07-04 | Koizumi Lighting Technology Corp | Illuminating device |
| CN104684191A (en) * | 2013-12-03 | 2015-06-03 | 深圳市海洋王照明工程有限公司 | LED (Light-Emitting Diode) constant-current drive circuit, backlight driving device and backlight illumination system |
-
2017
- 2017-03-07 CN CN201710130744.9A patent/CN108575004B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101835308A (en) * | 2010-04-27 | 2010-09-15 | 海洋王照明科技股份有限公司 | Led lamp control circuit and led lamp |
| JP2013131393A (en) * | 2011-12-21 | 2013-07-04 | Koizumi Lighting Technology Corp | Illuminating device |
| CN104684191A (en) * | 2013-12-03 | 2015-06-03 | 深圳市海洋王照明工程有限公司 | LED (Light-Emitting Diode) constant-current drive circuit, backlight driving device and backlight illumination system |
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