CN211184341U - Dimming power supply circuit and dimming power supply - Google Patents
Dimming power supply circuit and dimming power supply Download PDFInfo
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- CN211184341U CN211184341U CN201921267335.4U CN201921267335U CN211184341U CN 211184341 U CN211184341 U CN 211184341U CN 201921267335 U CN201921267335 U CN 201921267335U CN 211184341 U CN211184341 U CN 211184341U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a power supply circuit and power of adjusting luminance, power supply circuit adjusts luminance includes forward power input end, reverse power input end, microprocessor, a plurality of digital module power supply circuit and a vary voltage circuit, vary voltage circuit's forward input end and reverse input end insert alternating current power supply signal, vary voltage circuit converts alternating current power supply signal to direct current power supply signal, digital module power supply circuit output control signal is to the current value of vary voltage circuit output in order to adjust the vary voltage circuit, and export the current value to L ED lamp, and through the state information of L ED signal acquisition end collection L ED lamp, microprocessor is according to a plurality of digital module power supply circuit's state information, acquire the state and the fault information of a plurality of L ED lamps, thereby solve the technical problem that power supply circuit can't directly acquire the real-time operating condition and the fault type of illumination lamps and lanterns among the prior art.
Description
Technical Field
The utility model relates to the field of lighting technology, in particular to power supply circuit and the power of adjusting luminance.
Background
In the prior art, a key switch is generally directly arranged on an Alternating Current (AC) wire in the scheme of switching a lighting lamp, and the on and off of L ED lamps can be directly controlled, on the basis, if the brightness adjustment of the lighting lamp is required to be realized, the traditional L ED lamp mostly uses a silicon controlled rectifier or a Metal Oxide Semiconductor (MOS) tube to realize the brightness adjustment and the on-off control of a light source, and a circuit which adopts the silicon controlled rectifier or the MOS tube to adjust is provided with a circuit breaking protection function, so that the circuit and the lighting lamp can be protected under the limit condition, however, when the lighting lamp is more concentrated in one space, when the lighting lamp goes wrong, a user hardly knows the working state, fault information and lighting brightness of a lamp tube and a ballast of the lighting lamp.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a power supply circuit adjusts luminance aims at solving among the prior art problem that power supply circuit adjusts luminance can't directly acquire real-time operating condition and the fault information of illumination lamps and lanterns.
In order to achieve the above object, the present invention provides a dimming power circuit for controlling a plurality of L ED lamps, the dimming power circuit includes a forward power input terminal, a reverse power input terminal, a microprocessor, a plurality of digital module power circuits and a plurality of transformer circuits, the digital module power circuit includes a control signal output terminal, a L ED signal acquisition terminal, a power input terminal and a signal input/output terminal, the transformer circuit includes a forward input terminal, a reverse input terminal, a forward output terminal, a reverse output terminal, a power output terminal and a controlled terminal, the forward input terminal of any of the transformer circuits is connected to the forward power input terminal, the reverse input terminal of any of the transformer circuits is connected to the reverse power input terminal, the forward output terminal of the transformer circuit is connected to the forward power terminal of the L ED lamp, the reverse output terminal of the transformer circuit, the L ED signal acquisition terminal of the digital module power circuit and the power terminal of the L ED lamp are interconnected, the power output terminal of the transformer circuit is connected to the power input terminal of the digital module power circuit, the controlled terminal of the transformer circuit is connected to the control signal input terminal of the digital module power circuit;
the voltage transformation circuit is used for converting an alternating current power supply signal into a direct current power supply signal;
the digital module power circuit is used for outputting a control signal to the transformation circuit so as to adjust a current value output by the transformation circuit, outputting the current value to the L ED lamp, acquiring state information and fault information of the L ED lamp through the L ED signal acquisition end, and converting the state information and the fault information into a digital signal;
and the microprocessor is used for acquiring the state information and the fault information of the L ED lamps according to the digital signals of the digital module power circuits.
Optionally, the voltage transformation circuit includes a first power circuit and a second power circuit, the first power circuit includes a forward input end, a backward input end, a forward output end, a backward output end and a controlled end, the forward input end of the first power circuit is connected to the input end of the second power circuit, a connection node of the first power circuit is the forward power input end, the backward input end of the first power circuit is the backward power input end, the forward output end of the first power circuit is the forward output end of the voltage transformation circuit, the forward output end of the first power circuit is the backward output end of the voltage transformation circuit, and the controlled end of the first power circuit is the controlled end of the voltage transformation circuit; the output end of the second power supply circuit is the power supply output end of the voltage transformation circuit.
Optionally, the dimming power supply circuit further includes a follow current circuit and an absorption circuit, the dimming power supply circuit further includes a first output terminal, the absorption circuit includes a first input-output terminal and a second input-output terminal, the output terminal of the follow current circuit, the first input-output terminal of the absorption circuit and the positive input terminal of the voltage transformation circuit are interconnected, and the input terminal of the follow current circuit, the second input-output terminal of the absorption circuit and the first output terminal of the dimming power supply circuit are interconnected.
Optionally, the first power circuit includes a first capacitor, a second capacitor, a third capacitor, a first inductor, a first resistor, a second resistor, a third capacitor, a fourth resistor, a first transistor, and a first chip, the first chip includes an input pin, a power pin, a short-circuit protection pin, a control signal output pin, a control signal input pin, and a ground pin, the input pin of the first chip, the power pin of the first chip, the first end of the first resistor, the first end of the second resistor, the first end of the third resistor, the first end of the first capacitor, and the first end of the second capacitor are interconnected, a connection node thereof is a forward input end of the first power circuit, the short-circuit protection pin of the first chip, the second end of the second resistor, the second end of the third resistor, and the first end of the third capacitor are interconnected, a connection node of the first power supply circuit is a forward output end of the first power supply circuit, a control signal output pin of the first chip is connected with a first end of the fourth resistor, a control signal input pin of the first chip is a controlled end of the first power supply circuit, a grounding pin of the first chip, a source electrode of the first triode, a second end of the second capacitor, a second end of the first resistor and a second end of the first capacitor are all grounded, and the connection node of the first power supply circuit is a reverse input end of the first power supply circuit; the first end of the first inductor is connected with the drain electrode of the first triode, the second end of the first inductor is connected with the second end of the third capacitor, and the connection node of the first inductor and the second inductor is the reverse output end of the first power supply circuit; and the second end of the fourth resistor is connected with the grid electrode of the first triode.
Optionally, the second power circuit includes a fourth capacitor, a fifth capacitor, a sixth capacitor, a fifth resistor, a sixth resistor, a fifth inductor, a first diode, a second inductor, and a second chip, the second chip includes an input power pin, a ground pin, a guide pin, a feedback pin, and a switch output pin, the input power pin of the second chip is connected to the first end of the fourth capacitor, and its connection node is the input end of the second power circuit, the ground pin of the second chip, the second end of the fourth capacitor, the anode of the first diode, the first end of the fifth resistor, and the first end of the fifth capacitor are all grounded, the guide pin of the second chip is connected to the first end of the sixth capacitor, the switch output pin of the second chip is interconnected to the second end of the sixth capacitor, the cathode of the first diode, and the first end of the second inductor, a feedback pin of the second chip, a second end of the fifth resistor and a first end of the sixth resistor are connected; a second end of the second inductor, a second end of the sixth resistor, and a second end of the fifth inductor are interconnected, and a connection node thereof is an output end of the second power supply circuit.
Optionally, the absorption circuit includes a seventh resistor and a seventh capacitor, a first end of the seventh resistor is a first input/output end of the absorption circuit, a second end of the seventh resistor is connected to a first end of the seventh capacitor, and a first end of the seventh capacitor is a second input/output end of the absorption circuit.
Optionally, the freewheel circuit includes a second diode, an anode of the second diode is an input end of the freewheel circuit, and a cathode of the second diode is an output end of the freewheel circuit.
Optionally, the digital module power supply circuit includes a third chip, the third chip includes a control signal output pin, a power pin, a detection fault pin, a first communication pin and a second communication pin, the control signal output pin of the third chip is the control signal output end of the digital module power supply circuit, the power pin of the third chip is the power input end of the digital module power supply circuit, the detection fault pin of the third chip is the L ED signal acquisition end of the digital module power supply circuit, the first communication pin and the second communication pin of the third chip constitute the signal input/output end of the digital module power supply circuit.
In order to achieve the above object, the present invention further provides a dimming power supply, including the dimming power supply circuit as described above.
The utility model discloses be provided with a dimming power supply circuit in dimming power supply circuit, a be used for controlling a plurality of L ED lamps, dimming power supply circuit includes forward power input end, reverse power input end, a microprocessor, a plurality of digital module power supply circuit and a plurality of vary voltage circuit, arbitrary vary voltage circuit's forward input end is connected with forward power input end, arbitrary vary voltage circuit's reverse input end and reverse power input end are connected, vary voltage circuit's forward output end is connected with the forward power end of L ED lamp, vary voltage circuit's reverse output end, digital module power supply circuit's L ED signal acquisition end and L ED lamp's negative-going power end interconnect, vary voltage circuit's power output end is connected with digital module power supply circuit's power input end, vary voltage circuit's controlled end is connected with digital module power supply circuit's control signal output end, a plurality of digital module power supply circuit's signal input/output end all inserts microprocessor's signal port, vary voltage circuit converts alternating current power signal into DC power supply signal, digital module power supply circuit outputs control signal to the current value of vary voltage circuit with the regulation vary voltage circuit output, and with the current value of the digital module power supply signal acquisition circuit that the real-time information acquisition lamp 35L, thereby the trouble information acquisition circuit that the real-time digital module power supply circuit has only obtained a plurality of the trouble information acquisition module, and the real-time digital module, the trouble information acquisition module, the real-time power supply circuit, the real-time fault information acquisition module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a functional module of the dimming power circuit of the present invention;
fig. 2 is a schematic circuit diagram of the dimming power circuit of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a power supply circuit adjusts luminance for solve the technical problem that lighting fixture real-time operating condition and fault information can't directly acquire among the prior art.
IN an embodiment of the present invention, as shown IN fig. 1, a dimming power circuit is used for controlling a plurality of L ED lamps, the dimming power circuit includes a forward power input terminal IN +, a reverse power input terminal IN-, a microprocessor 30, a plurality of digital module power circuits 20 and a plurality of transformer circuits 10, the digital module power circuit 20 includes a control signal output terminal, a L ED signal acquisition terminal, a power input terminal and a signal input/output terminal, the transformer circuits 10 includes a forward input terminal, a reverse input terminal, a forward output terminal, a reverse output terminal, a power output terminal and a controlled terminal, the forward input terminal of any transformer circuit 10 is connected to the forward power input terminal IN +, the reverse input terminal of any transformer circuit 10 is connected to the reverse power input terminal IN-, the forward output terminal of transformer circuit 10 is connected to the forward power terminal L + of the L ED lamp, the reverse output terminal of transformer circuit 10, the L ED signal acquisition terminal of digital module power circuit 20 and the negative power terminal L ED-interconnected of the L ED lamp, the power output terminal of transformer circuits 10 is connected to the digital module power input terminal 6720, and the digital module power output terminal is connected to the digital module power input terminal 6720.
In the above embodiment, the transformer circuit 10 converts the ac power signal into a dc power signal, the digital module power circuit 20 outputs a control signal to the transformer circuit 10 to adjust a current value output by the transformer circuit 10 and outputs the current value to the L ED lamp to adjust the brightness of the L ED lamp, and the L ED signal acquisition terminal acquires status information and fault information of the L ED lamp and converts the status information into a digital signal, the microprocessor 30 acquires status information and fault information of the plurality of L ED lamps according to the digital signals of the plurality of digital module power circuits 20, wherein the control signal is a PWM control signal, the status information is a voltage signal, the digital module power circuit 20 can determine L ED lamp status and whether there is a fault according to the voltage signal, and encodes the determination result and the corresponding L ED lamp location and number into a character string by using a unique manchester code using a DA L I interface communication protocol, and outputs the character string to the microprocessor 30, the microprocessor 30 reads the character string to acquire L and the corresponding L ED lamp location and bit number of the lighting string, when the lighting status and bit of the lighting module 20 is a low-bit-based on-bit-.
Optionally, as shown IN fig. 2, the transforming circuit 10 includes a first power circuit 101 and a second power circuit 102, the first power circuit 101 includes a forward input terminal, a backward input terminal, a forward output terminal, a backward output terminal, and a controlled terminal, the forward input terminal of the first power circuit 101 is connected to the input terminal of the second power circuit 102, and a connection node thereof is the forward power input terminal IN +, the backward input terminal of the first power circuit 101 is the backward power input terminal IN-, the forward output terminal of the first power circuit 101 is the forward output terminal of the transforming circuit 10, the forward output terminal of the first power circuit 101 is the backward output terminal of the transforming circuit 10, and the controlled terminal of the first power circuit 101 is the controlled terminal of the transforming circuit 10; the output terminal of the second power circuit 102 is the power output terminal of the transformer circuit 10.
Under the action of the control signal, the first power circuit 101 provides working voltage and current for the L ED lamp if L ED lamp operation is needed, and closes the output of the first power circuit 101 if not needed, the second power circuit 102 converts the power supply into the digital module power circuit 20 to provide working current under the condition that the positive power input end IN + and the reverse power input end IN-have input, and when the lamp is IN standby, the dimming power circuit only has the second power circuit 102 to operate, thereby reducing the power consumption.
Optionally, the dimming power supply circuit further includes a freewheeling circuit 50 and an absorption circuit 40, the dimming power supply circuit further includes a first output terminal, the absorption circuit 40 includes a first input-output terminal and a second input-output terminal, the output terminal of the freewheeling circuit 50, the first input-output terminal of the absorption circuit 40 and the positive input terminal of the transformer circuit 10 are interconnected, and the input terminal of the freewheeling circuit 50, the second input-output terminal of the absorption circuit 40 and the first output terminal of the dimming power supply circuit are interconnected.
The freewheeling circuit 50 may limit the direction of the output current controlled by the first power circuit 101, and the absorption circuit 40 may eliminate the ripple of the freewheeling circuit 50.
Optionally, the first power circuit 101 includes a first capacitor C, a second capacitor C, a third capacitor C, a first inductor 1, a first resistor R, a second resistor R, a third resistor R, a fourth resistor R, a first triode Q, and a first chip U, the first chip U includes an input pin VIN, a power pin VCC, a short-circuit protection pin RS, a control signal output pin DR, a control signal input pin DIM, and a ground pin GND, the input pin VIN of the first chip U, the power pin VCC of the first chip U, the first end of the first resistor R, the first end of the second resistor R, the first end of the third resistor R, the first end of the first capacitor C, and the first end of the second capacitor C are interconnected, a connection node thereof is a forward input end of the first power circuit 101, the short-circuit protection pin RS of the first chip U, the second end of the second resistor R, the second end of the third resistor R, and the first end of the third capacitor C is connected to a forward input end of the first power circuit 101, the short-circuit protection pin RS of the first chip U, the second end of the second resistor R, the third resistor R, the first end of the third resistor R, the first end of the first resistor R, the first end of the first resistor R, the second resistor R, the first end of the second resistor R, the first resistor R, the second resistor R, the first end of the second resistor R, the second resistor R.
The first inductor L1 is used as an output power inductor to provide energy for the L ED lamp, the first chip U1 controls the first transistor Q1 to be turned on and off according to a control signal input from the control signal input pin DIM, and the first transistor Q1 controls the first inductor L1 to continuously output energy to the L ED lamp.
Optionally, the first chip U1 is of model MP 24894.
Optionally, the second power circuit 102 includes a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a fifth resistor R5, a sixth resistor R6, a fifth inductor L, a first diode D1, a second inductor L and a second chip U2, the second chip U2 includes an input power pin VIN, a ground pin GND, a leading pin bst (bst), a feedback pin FB and a switch output pin SW, the input power pin VIN of the second chip U2 is connected to a first end of the fourth capacitor C4, a connection node thereof is an input end of the second power circuit 102, the GND of the second chip U2, a second end of the fourth capacitor C4, an anode of the first diode D1, a first end of the fifth resistor R5, a first end of the fifth capacitor C5 is grounded, a leading pin bst of the second chip 2 is connected to the first end of the sixth capacitor C1, a first end of the fifth resistor R5, a first end of the fifth capacitor C5 is connected to the ground, a leading pin of the second chip U2 is connected to the first end of the sixth capacitor C1, a first end of the first diode C1, a lead pin of the first terminal of the bst and a cathode of the switch output terminal of the first diode R1, the first resistor R1, the first terminal of the first resistor R1 and the switch output terminal of the first resistor R1 are interconnected 1, the first resistor R1, the first terminal of the sixth resistor R1, the switch output terminal of the first resistor R1.
The second chip U2 drops the power input from the input power pin VIN and outputs the power through the second inductor L2, so as to supply the operating power to the dimming power circuit.
Optionally, the second chip U2 is MP 2459.
Optionally, the snubber circuit 40 includes a seventh resistor R7 and a seventh capacitor C7, a first end of the seventh resistor R7 is a first input/output end of the snubber circuit 40, a second end of the seventh resistor R7 is connected to a first end of the seventh capacitor C7, and a first end of the seventh capacitor C7 is a second input/output end of the snubber circuit 40.
The seventh resistor R7 and the seventh capacitor C7 can eliminate the ripple of the flywheel circuit 50.
Optionally, the freewheel circuit 50 includes a second diode D2, an anode of the second diode D2 is an input terminal of the freewheel circuit 50, and a cathode of the second diode D2 is an output terminal of the freewheel circuit 50.
The second diode D2 is an output freewheeling diode and controls the direction of the output current of the first power circuit 101.
Optionally, the digital module power circuit 20 includes a third chip U3, the third chip U3 includes a control signal output pin DIM, a power pin VCC, a ground pin GND, a detection fault pin ERR, a first communication pin DA L I1 and a second communication pin DA L I2, the control signal output pin DIM of the third chip U3 is a control signal output terminal of the digital module power circuit 20, the power pin VCC of the third chip U3 is a power input terminal of the digital module power circuit 20, the detection fault pin ERR of the third chip U3 is an L ED signal collecting terminal of the digital module power circuit 20, the first communication pin DA L I1 and the second communication pin DA L I2 of the third chip U3 constitute a signal input/output terminal of the digital module power circuit 20, and the third chip U3 of the third chip U3 is grounded.
The third chip U3 outputs the control signal inputted by the first communication pin DA L I1 and the second communication pin DA L I2 through the control signal output pin DR, and acquires the status information and the fault information of the L ED lamp by detecting the fault pin ERR, and converts the status information and the fault information into digital signals, and encodes the address information, the status information and the fault information corresponding to the L ED lamp according to the manchester encoding rule, and outputs the encoded digital signals through the first communication pin DA L I1 and the second communication pin DA L I2, the microprocessor 30 acquires the status information and the fault information of the plurality of L ED lamps according to the digital signals of the plurality of digital module power circuits 20, and it is noted that the third chip U3 can select various DA L I module power supplies, and the microprocessor 30 can select the microprocessor 30 capable of implementing the functions of the present invention.
The principle of the present application is described in detail below with reference to fig. 1 and 2:
the third chip U3 outputs control signals input by a first communication pin DA L I1 and a second communication pin DA L I2 through a control signal output pin DR, the first chip U1 controls a first triode Q1 to be turned on and off according to a control signal input by a control signal input pin DIM, the first triode Q1 controls a first inductor L to continuously output energy to a L1 ED lamp, so as to realize dimming and L ED lamp driving, the third chip U3 acquires state information and fault information of the L ED lamp by detecting a fault pin ERR, so as to acquire the state information and fault information of a corresponding L ED 4ED lamp, converts the state information and fault information into digital signals, encodes the address information, state information and fault information corresponding to the L ED lamp according to a manchester encoding rule, and transmits the encoded digital signals through the first communication pin DA L I1 and the second communication pin DA 2I 2, and the encoded digital signals are transmitted through a plurality of power supply pins DA L I1 and DA 862I 2, so that the status information and fault information of the lamps can be simultaneously acquired by a microprocessor L, a plurality of fault information acquisition module, a plurality of digital information and a fault information acquisition module 3653, a plurality of fault information and a fault information acquisition module can be easily viewed by a microprocessor 3653, a plurality of digital information and a fault information for a plurality of fault information, a fault information acquisition and a fault information, a fault information acquisition module.
In order to achieve the above object, the present invention further provides a dimming power supply, including the dimming power supply circuit as described above.
It is worth noting, because the utility model discloses the power of adjusting luminance has contained above-mentioned all embodiments of power supply circuit of adjusting luminance, consequently the utility model discloses the power of adjusting luminance has above-mentioned all beneficial effects of power supply circuit of adjusting luminance, and here is no longer repeated.
The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.
Claims (9)
1. A dimming power circuit is used for controlling a plurality of L ED lamps and is characterized in that the dimming power circuit comprises a positive power input end, a reverse power input end, a microprocessor, a plurality of digital module power circuits and a plurality of voltage transformation circuits, the digital module power circuits comprise a control signal output end, a L ED signal acquisition end, a power input end and a signal input/output end, the voltage transformation circuits comprise a positive input end, a reverse input end, a positive output end, a reverse output end, a power output end and a controlled end, the positive input end of any voltage transformation circuit is connected with the positive power input end, the reverse input end of any voltage transformation circuit is connected with the reverse power input end, the positive output end of the voltage transformation circuit is connected with the positive power end of a L ED lamp, the reverse output end of the voltage transformation circuit, the L ED signal acquisition end of the digital module power circuit and the negative power ends of the L lamps are interconnected, the power output end of the voltage transformation circuit is connected with the power input end of the digital module power circuit, and the controlled end of the voltage transformation circuit is connected with the control signal output end of the digital module power circuit;
the voltage transformation circuit is used for converting an alternating current power supply signal into a direct current power supply signal;
the digital module power circuit is used for outputting a control signal to the transformation circuit so as to adjust a current value output by the transformation circuit, outputting the current value to the L ED lamp, acquiring state information and fault information of the L ED lamp through the L ED signal acquisition end, and converting the state information and the fault information into a digital signal;
and the microprocessor is used for acquiring the state information and the fault information of the L ED lamps according to the digital signals of the digital module power circuits.
2. The dimming power circuit according to claim 1, wherein the transforming circuit comprises a first power circuit and a second power circuit, the first power circuit comprises a forward input terminal, a backward input terminal, a forward output terminal, a backward output terminal and a controlled terminal, the forward input terminal of the first power circuit is connected with the input terminal of the second power circuit, the connection node is the forward power input terminal, the backward input terminal of the first power circuit is the backward power input terminal, the forward output terminal of the first power circuit is the forward output terminal of the transforming circuit, the forward output terminal of the first power circuit is the backward output terminal of the transforming circuit, and the controlled terminal of the first power circuit is the controlled terminal of the transforming circuit; the output end of the second power supply circuit is the power supply output end of the voltage transformation circuit.
3. The dimming power supply circuit of claim 1, further comprising a freewheel circuit and an snubber circuit, the dimming power supply circuit further comprising a first output terminal, the snubber circuit comprising a first input-output terminal and a second input-output terminal, the output terminal of the freewheel circuit, the first input-output terminal of the snubber circuit and the forward input terminal of the transformer circuit being interconnected, the input terminal of the freewheel circuit, the second input-output terminal of the snubber circuit and the first output terminal of the dimming power supply circuit being interconnected.
4. The dimming power circuit of claim 2, wherein the first power circuit comprises a first capacitor, a second capacitor, a third capacitor, a first inductor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first transistor, and a first chip, the first chip comprises an input pin, a power pin, a short-circuit protection pin, a control signal output pin, a control signal input pin, and a ground pin, the input pin of the first chip, the power pin of the first chip, the first terminal of the first resistor, the first terminal of the second resistor, the first terminal of the third resistor, the first terminal of the first capacitor, and the first terminal of the second capacitor are interconnected at a connection node that is a forward input terminal of the first power circuit, the short-circuit protection pin of the first chip, the second terminal of the second resistor, the second terminal of the third resistor, and the first terminal of the third capacitor are interconnected, a connection node of the first power supply circuit is a forward output end of the first power supply circuit, a control signal output pin of the first chip is connected with a first end of the fourth resistor, a control signal input pin of the first chip is a controlled end of the first power supply circuit, a grounding pin of the first chip, a source electrode of the first triode, a second end of the second capacitor, a second end of the first resistor and a second end of the first capacitor are all grounded, and the connection node of the first power supply circuit is a reverse input end of the first power supply circuit; the first end of the first inductor is connected with the drain electrode of the first triode, the second end of the first inductor is connected with the second end of the third capacitor, and the connection node of the first inductor and the second inductor is the reverse output end of the first power supply circuit; and the second end of the fourth resistor is connected with the grid electrode of the first triode.
5. The dimming power circuit of claim 2, wherein the second power circuit comprises a fourth capacitor, a fifth capacitor, a sixth capacitor, a fifth resistor, a sixth resistor, a fifth inductor, a first diode, a second inductor, and a second chip, the second chip comprises an input power pin, a ground pin, a guide pin, a feedback pin, and a switch output pin, the input power pin of the second chip is connected to the first terminal of the fourth capacitor at a node where the input power pin is the input terminal of the second power circuit, the ground pin of the second chip, the second terminal of the fourth capacitor, the anode of the first diode, the first terminal of the fifth resistor, and the first terminal of the fifth capacitor are all grounded, the guide pin of the second chip is connected to the first terminal of the sixth capacitor, the switch output pin of the second chip is connected to the second terminal of the sixth capacitor, The cathode of the first diode and the first end of the second inductor are interconnected, and the feedback pin of the second chip, the second end of the fifth resistor and the first end of the sixth resistor are connected; a second end of the second inductor, a second end of the sixth resistor, and a second end of the fifth inductor are interconnected, and a connection node thereof is an output end of the second power supply circuit.
6. The dimming power supply circuit according to claim 3, wherein the snubber circuit comprises a seventh resistor and a seventh capacitor, a first terminal of the seventh resistor is a first input/output terminal of the snubber circuit, a second terminal of the seventh resistor is connected to a first terminal of the seventh capacitor, and a first terminal of the seventh capacitor is a second input/output terminal of the snubber circuit.
7. The dimming power supply circuit of claim 3, wherein the freewheel circuit comprises a second diode, an anode of the second diode being an input terminal of the freewheel circuit, and a cathode of the second diode being an output terminal of the freewheel circuit.
8. The dimming power circuit according to any one of claims 1-5, wherein the digital module power circuit comprises a third chip, the third chip comprises a control signal output pin, a power pin, a detection failure pin, a first communication pin and a second communication pin, the control signal output pin of the third chip is a control signal output terminal of the digital module power circuit, the power pin of the third chip is a power input terminal of the digital module power circuit, the detection failure pin of the third chip is an L ED signal acquisition terminal of the digital module power circuit, and the first communication pin and the second communication pin of the third chip constitute signal input/output terminals of the digital module power circuit.
9. A dimming power supply comprising a dimming power supply circuit as claimed in any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921267335.4U CN211184341U (en) | 2019-08-02 | 2019-08-02 | Dimming power supply circuit and dimming power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921267335.4U CN211184341U (en) | 2019-08-02 | 2019-08-02 | Dimming power supply circuit and dimming power supply |
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| CN211184341U true CN211184341U (en) | 2020-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325151A (en) * | 2021-11-12 | 2022-04-12 | 国网浙江省电力有限公司平湖市供电公司 | Ring main unit fault acquisition method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325151A (en) * | 2021-11-12 | 2022-04-12 | 国网浙江省电力有限公司平湖市供电公司 | Ring main unit fault acquisition method |
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