CN110994799A - Intelligent power distribution cabinet - Google Patents
Intelligent power distribution cabinet Download PDFInfo
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- CN110994799A CN110994799A CN201911295882.8A CN201911295882A CN110994799A CN 110994799 A CN110994799 A CN 110994799A CN 201911295882 A CN201911295882 A CN 201911295882A CN 110994799 A CN110994799 A CN 110994799A
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- resistor
- triode
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- module
- power distribution
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention relates to the field of power distribution cabinets and discloses an intelligent power distribution cabinet which comprises an insulation performance detection module, a mechanical performance detection module, an electrical performance detection module, an acquisition module, a switch mechanism, a switch sensor, a microcontroller, a fuse, a protection module, a clock module, a main controller and a power supply module, wherein the insulation performance detection module, the mechanical performance detection module and the electrical performance detection module are all connected with the acquisition module; the power supply module comprises a transformer, a rectifier bridge, a first capacitor, a first light emitting diode, a first resistor, a first triode, a second light emitting diode, a second resistor, a second triode, a third triode, a second capacitor, a third diode, a fourth resistor, a third capacitor, a fifth potentiometer, a fourth capacitor and a voltage output end. The intelligent power distribution cabinet has the following beneficial effects: the circuit structure is simpler, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.
Description
Technical Field
The invention relates to the field of power distribution cabinets, in particular to an intelligent power distribution cabinet.
Background
The intelligent power distribution cabinet is also a precise power distribution cabinet and is a power distribution cabinet which comprehensively collects all energy data aiming at the tail end of the energy of a data center machine room. High-precision measurement data are provided for a terminal energy monitoring system, and electric energy quality data are reflected in real time through a display unit. And uploaded to the background environmental control system through digital communication. So as to achieve the effective management of real-time monitoring and operation quality of the whole power distribution system. The power supply part of the traditional intelligent power distribution cabinet is more in components, complex in circuit structure, higher in hardware cost and inconvenient to maintain. In addition, because the power supply part of traditional intelligent power distribution cabinet lacks corresponding circuit protection function, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.
Disclosure of Invention
The invention aims to solve the technical problem of providing the intelligent power distribution cabinet which has the advantages of simple circuit structure, low cost, convenient maintenance and high circuit safety and reliability, and aims to overcome the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: an intelligent power distribution cabinet is constructed and comprises an insulation performance detection module, a mechanical performance detection module, an electrical performance detection module, an acquisition module, a switch mechanism, a switch sensor, a microcontroller, a fuse, a protection module, a clock module, a main controller and a power supply module, wherein the insulation performance detection module, the mechanical performance detection module and the electrical performance detection module are all connected with the acquisition module, the acquisition module is connected with the microcontroller, the switch sensor is respectively connected with the acquisition module and the switch mechanism, the switch mechanism is connected with the microcontroller, the fuse is connected with the microcontroller through the protection module, the clock module and the main controller are all connected with the microcontroller, and the power supply module is connected with the main controller;
the power supply module comprises a transformer, a rectifier bridge, a first capacitor, a first light emitting diode, a first resistor, a first triode, a second light emitting diode, a second resistor, a second triode, a third triode, a second capacitor, a third diode, a fourth resistor, a third capacitor, a fifth potentiometer, a fourth capacitor and a voltage output end, one end of a primary coil of the transformer is connected with one end of 220V alternating current, the other end of the primary coil of the transformer is connected with the other end of the 220V alternating current, one end of a secondary coil of the transformer is connected with one alternating current input end of the rectifier bridge, the other end of the secondary coil of the transformer is connected with the other alternating current input end of the rectifier bridge, one direct current output end of the rectifier bridge is respectively connected with one end of the first capacitor, the anode of the first light emitting diode and the emitting electrode of the first triode, the cathode of the first light emitting diode is connected with one end of the first resistor, the base of the first triode is connected with the anode of the second light emitting diode, the cathode of the second light emitting diode is connected with one end of the second resistor, the other end of the second resistor is respectively connected with the collector of the second triode and one end of the second capacitor, the collector of the first triode is connected with the anode of the third diode, the cathode of the third diode is respectively connected with one end of the fourth resistor, one end of the fourth capacitor and the voltage output end, the other end of the fourth resistor is respectively connected with the base of the third triode, the other end of the second capacitor, one end of the third capacitor, one fixed end and sliding end of the fifth potentiometer, and the other direct current output end of the rectifier bridge is respectively connected with the other end of the first capacitor, the collector of the second triode, the collector of the third resistor, the collector of the fifth potentiometer and the voltage output, The other end of the first resistor, the emitting electrode of the second triode, the emitting electrode of the third triode and one end of the third resistor are connected, and the other end of the third resistor is connected with the other end of the third capacitor, the other fixed end of the fifth potentiometer and the other end of the fourth capacitor respectively.
In the intelligent power distribution cabinet, the type of the third diode is S-272T.
In the intelligent power distribution cabinet, the power supply module further comprises a sixth resistor, one end of the sixth resistor is connected with the other end of the second capacitor, and the other end of the sixth resistor is connected with one end of the third capacitor.
In the intelligent power distribution cabinet, the resistance value of the sixth resistor is 25k omega.
In the intelligent power distribution cabinet, the power supply module further comprises a seventh resistor, one end of the seventh resistor is connected with the emitter of the second triode, and the other end of the seventh resistor is connected with the other end of the first resistor.
In the intelligent power distribution cabinet, the resistance value of the seventh resistor is 37k omega.
In the intelligent power distribution cabinet, the first triode is a PNP triode.
In the intelligent power distribution cabinet of the present invention, the second triode is an NPN type triode.
In the intelligent power distribution cabinet of the present invention, the third triode is an NPN type triode.
The intelligent power distribution cabinet has the following beneficial effects: the intelligent power supply device is provided with an insulation performance detection module, a mechanical performance detection module, an electrical performance detection module, an acquisition module, a switching mechanism, a switching sensor, a microcontroller, a fuse protector, a protection module, a clock module, a main controller and a power supply module; the power supply module comprises a transformer, a rectifier bridge, a first capacitor, a first light emitting diode, a first resistor, a first triode, a second light emitting diode, a second resistor, a second triode, a third triode, a second capacitor, a third diode, a fourth resistor, a third capacitor, a fifth potentiometer, a fourth capacitor and a voltage output end.
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 an embodiment of an intelligent power distribution cabinet according to the present invention;
fig. 2 is a schematic circuit diagram of the power supply module in the embodiment.
Detailed Description
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.
In the embodiment of the intelligent power distribution cabinet, the schematic structural diagram of the intelligent power distribution cabinet is shown in fig. 1. In fig. 1, this intelligent power distribution cabinet includes insulating properties detection module 1, mechanical properties detection module 2, electrical properties detection module 3, collection module 4, switching mechanism 5, switch sensor 6, microcontroller 7, fuse 8, protection module 9, clock module 10, main control unit 11 and power module 12, wherein, insulating properties detection module 1, mechanical properties detection module 2 and electrical properties detection module 3 all are connected with collection module 4, collection module 4 is connected with microcontroller 7, switch sensor 6 is connected with collection module 4 and switching mechanism 5 respectively, switching mechanism 5 is connected with microcontroller 7, fuse 8 passes through protection module 9 and is connected with microcontroller 7, clock module 10 and main control unit 11 all are connected with microcontroller 7, power module 12 is connected with main control unit 11.
The insulation performance detection module 1 judges the electrical service life of the contact by detecting two main parameters which affect the abrasion loss of the contact, namely the cut-off current and the arcing time. The mechanical performance detection module 2 judges the mechanical fault of the circuit breaker by detecting signals such as mechanical vibration of key components, waveform change of closing/opening brake line current and voltage, on-off state of a control loop, energy storage completion condition of an operating mechanism and the like. The electrical performance detection module 3 detects the insulation state by using UHF electromagnetic waves, and detects the temperature of the current-carrying conductor and the contact portion by using a temperature sensing element or an infrared technology. The main controller 11 is connected with the intelligent terminal in a wireless mode.
The acquisition module 4 is used for acquiring the working state information of the intelligent switch and sending the working state information to the microcontroller 7. The main controller 11 obtains the working state information of the intelligent switch from the microcontroller 7 and sends the working state information to the mobile terminal in a wireless mode for displaying. The main controller 11 receives a control instruction sent by the mobile terminal, sends the control instruction to the microcontroller 7, and the microcontroller 7 controls the intelligent switch according to the received control instruction.
Microcontroller 7 compares the operating condition information of the intelligent switch who gathers acquisition module 4 with the numerical value that opens circuit that predetermines, and when operating condition information reached the numerical value that opens circuit, microcontroller 7 started protection module 9, and protection module 9 starts fuse 7 according to the short circuit instruction, opens circuit with intelligent switch, and microcontroller 7 sends the information that opens circuit to main control unit 11, and main control unit 11 sends the information that opens circuit to mobile terminal.
The main controller 11 carries the time information on the clock module 10 when sending the working state information of the intelligent switch to the mobile terminal. When the main controller 11 receives a control instruction sent by the mobile terminal, time information is recorded according to the clock module 10.
Fig. 2 is a schematic circuit diagram of a power supply module in this embodiment, in fig. 2, the power supply module 12 includes a transformer T, a rectifier bridge Z, a first capacitor C1, a first light emitting diode D1, a first resistor R1, a first triode Q1, a second light emitting diode D2, a second resistor R2, a second triode Q2, a third triode Q3, a second capacitor C2, a third diode D3, a fourth resistor R4, a third capacitor C3, a fifth potentiometer RP5, a fourth capacitor C4, and a voltage output Vo, wherein one end of a primary coil of the transformer T is connected to one end of 220V ac power, the other end of the primary coil of the transformer T is connected to the other end of 220V ac power, one end of a secondary coil of the transformer T is connected to one ac input end of the rectifier bridge Z, the other end of a secondary coil of the transformer T is connected to the other ac input end of the rectifier bridge Z, and one dc output end of the rectifier bridge Z is connected to one end of the first capacitor C1, An anode of the first light emitting diode D1 is connected to an emitter of the first transistor Q1, a cathode of the first light emitting diode D1 is connected to one end of a first resistor R1, a base of the first transistor Q1 is connected to an anode of the second light emitting diode D2, a cathode of the second light emitting diode D2 is connected to one end of a second resistor R2, the other end of the second resistor R2 is connected to a collector of the second transistor Q2 and one end of a second capacitor C2, a collector of the first transistor Q1 is connected to an anode of a third diode D3, a cathode of the third diode D3 is connected to one end of a fourth resistor R4, one end of a fourth capacitor C4 and the voltage output terminal Vo, the other end of the fourth resistor R4 is connected to a base of the third transistor Q3, the other end of the second capacitor C2, one end of the third capacitor C3, a fixed end of the fifth potentiometer RP5 and a sliding end of the rectifying bridge Z1, and the other end of the first dc output terminal of the second capacitor C1 are connected to one end of the second resistor R56, The other end of the first resistor R1, the emitter of the second triode Q2, the emitter of the third triode Q3 and one end of the third resistor R3 are connected, and the other end of the third resistor R3 is respectively connected with the other end of the third capacitor C3, the other fixed end of the fifth potentiometer RP5 and the other end of the fourth capacitor C4.
This power module 12 compares with traditional intelligent power distribution cabinet's power supply part, and its components and parts that use are less, and circuit structure is comparatively simple, and convenient maintenance can reduce the hardware cost like this owing to saved some components and parts. In addition, the third diode D3 is a current limiting diode for current limiting protection of the collector current of the first transistor Q1. The current limiting protection principle is as follows: when the collector current of the first triode Q1 is large, the third diode D3 can reduce the collector current of the first triode Q1 to keep the first triode Q1 in a normal working state, so that the device in the circuit is not burnt out due to too large current, the safety and reliability of the circuit are high, and the technical effect better than that of the conventional technology is achieved by fewer devices. It should be noted that in the present embodiment, the model of the third diode D3 is S-272T. Of course, in practical applications, the third diode D3 may also be another type of diode with the same function.
The working principle of the power supply module 12 is as follows: the commercial power is transformed by a transformer T, rectified by a rectifier bridge Z and filtered by a first capacitor C1 to become direct current, a first light-emitting diode D1 is a power indicator, a second light-emitting diode D2 is a work indicator, and a first triode Q1 is a work control triode and works in a switch state; the second triode Q2, the third triode Q3 and the second capacitor C2 form a one-shot trigger, the third resistor R4 and the fifth potentiometer RP5 form a voltage-limiting sampling circuit, and the third resistor R3 is a current-limiting sampling resistor.
The standby state is as follows: when the power supply is switched on, if the voltage output end Vo is not connected with the load, the second triode Q2 is cut off due to no base voltage, the first triode Q1 is also cut off, no voltage is output, and only the first light-emitting diode D1 emits light at the moment.
The pressure stabilizing process comprises the following steps: when the voltage output end Vo is connected with a load, the first triode Q1 is rapidly conducted, and the voltage of the voltage output end Vo is increased; since the second capacitor C2 is a positive feedback function, the circuit state quickly reaches steady state. At this time, the first transistor Q1 and the second transistor Q2 are turned on, the third transistor Q3 is turned off, power is supplied to the load, and the second light emitting diode D2 emits light.
If the current of the voltage output end Vo is larger than the limit value, the voltage at the two ends of the third resistor R3 is increased, the BE interelectrode voltage of the third triode Q3 is higher than the dead zone voltage, the state of the monostable trigger is triggered, the third triode Q3 is conducted, the first triode Q1 and the second triode Q2 are cut off, and the voltage output end Vo stops supplying power; after the normal state is recovered, the monostable trigger automatically resets and enters a voltage stabilization working state again.
In this embodiment, the first transistor Q1 is a PNP transistor, the second transistor Q2 is an NPN transistor, and the third transistor Q3 is an NPN transistor. Certainly, in practical applications, the first transistor Q1 may also be an NPN-type transistor, and the second transistor Q2 and the third transistor Q3 may also be PNP-type transistors, but the structure of the circuit is also changed accordingly.
In this embodiment, the power supply module 12 further includes a sixth resistor R6, one end of the sixth resistor R6 is connected to the other end of the second capacitor C2, and the other end of the sixth resistor R6 is connected to one end of the third capacitor C3. The sixth resistor R6 is a current limiting resistor for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the sixth resistor R6 is located is large, the magnitude of the current of the branch where the sixth resistor R6 is located can be reduced by the sixth resistor R6, so that the branch can be kept in a normal operating state, and the components in the circuit cannot be burned out due to the large current, so that the safety and reliability of the circuit are further enhanced. It should be noted that, in the present embodiment, the resistance of the sixth resistor R6 is 25k Ω. Of course, in practical applications, the resistance of the sixth resistor R6 may be adjusted accordingly, that is, the resistance of the sixth resistor R6 may be increased or decreased accordingly.
In this embodiment, the power supply module 12 further includes a seventh resistor R7, one end of the seventh resistor R7 is connected to the emitter of the second transistor Q2, and the other end of the seventh resistor R7 is connected to the other end of the first resistor R1. The seventh resistor R7 is a current limiting resistor, and is used for current limiting protection of the emitter current of the second transistor Q2. The current limiting protection principle is as follows: when the emitter current of the second triode Q2 is large, the seventh resistor R7 can reduce the emitter current of the second triode Q2 to keep the second triode Q2 in a normal working state, so that the elements in the circuit are not burned out due to too large current, and the safety and reliability of the circuit are further enhanced. It should be noted that, in the present embodiment, the resistance of the seventh resistor R7 is 37k Ω. Of course, in practical applications, the resistance of the seventh resistor R7 may be adjusted accordingly, that is, the resistance of the seventh resistor R7 may be increased or decreased accordingly.
In a word, in this embodiment, this power module 12 compares with the power supply part of traditional intelligent power distribution cabinet, and its components and parts that use are less, and circuit structure is comparatively simple, and convenient maintenance owing to saved some components and parts, can reduce the hardware cost like this. In addition, the power supply module 12 is provided with a current limiting diode, so that the safety and the reliability of the circuit are high.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. An intelligent power distribution cabinet is characterized by comprising an insulation performance detection module, a mechanical performance detection module, an electrical performance detection module, an acquisition module, a switching mechanism, a switch sensor, a microcontroller, a fuse, a protection module, a clock module, a main controller and a power supply module, wherein the insulation performance detection module, the mechanical performance detection module and the electrical performance detection module are all connected with the acquisition module, the acquisition module is connected with the microcontroller, the switch sensor is respectively connected with the acquisition module and the switching mechanism, the switching mechanism is connected with the microcontroller, the fuse is connected with the microcontroller through the protection module, the clock module and the main controller are all connected with the microcontroller, and the power supply module is connected with the main controller;
the power supply module comprises a transformer, a rectifier bridge, a first capacitor, a first light emitting diode, a first resistor, a first triode, a second light emitting diode, a second resistor, a second triode, a third triode, a second capacitor, a third diode, a fourth resistor, a third capacitor, a fifth potentiometer, a fourth capacitor and a voltage output end, one end of a primary coil of the transformer is connected with one end of 220V alternating current, the other end of the primary coil of the transformer is connected with the other end of the 220V alternating current, one end of a secondary coil of the transformer is connected with one alternating current input end of the rectifier bridge, the other end of the secondary coil of the transformer is connected with the other alternating current input end of the rectifier bridge, one direct current output end of the rectifier bridge is respectively connected with one end of the first capacitor, the anode of the first light emitting diode and the emitting electrode of the first triode, the cathode of the first light emitting diode is connected with one end of the first resistor, the base of the first triode is connected with the anode of the second light emitting diode, the cathode of the second light emitting diode is connected with one end of the second resistor, the other end of the second resistor is respectively connected with the collector of the second triode and one end of the second capacitor, the collector of the first triode is connected with the anode of the third diode, the cathode of the third diode is respectively connected with one end of the fourth resistor, one end of the fourth capacitor and the voltage output end, the other end of the fourth resistor is respectively connected with the base of the third triode, the other end of the second capacitor, one end of the third capacitor, one fixed end and sliding end of the fifth potentiometer, and the other direct current output end of the rectifier bridge is respectively connected with the other end of the first capacitor, the collector of the second triode, the collector of the third resistor, the collector of the fifth potentiometer and the voltage output, The other end of the first resistor, the emitting electrode of the second triode, the emitting electrode of the third triode and one end of the third resistor are connected, and the other end of the third resistor is connected with the other end of the third capacitor, the other fixed end of the fifth potentiometer and the other end of the fourth capacitor respectively.
2. The intelligent power distribution cabinet according to claim 1, wherein the third diode is S-272T in type.
3. The intelligent power distribution cabinet according to claim 2, wherein the power supply module further comprises a sixth resistor, one end of the sixth resistor is connected to the other end of the second capacitor, and the other end of the sixth resistor is connected to one end of the third capacitor.
4. The intelligent power distribution cabinet according to claim 3, wherein the resistance value of the sixth resistor is 25k Ω.
5. The intelligent power distribution cabinet according to claim 4, wherein the power supply module further comprises a seventh resistor, one end of the seventh resistor is connected to the emitter of the second triode, and the other end of the seventh resistor is connected to the other end of the first resistor.
6. The intelligent power distribution cabinet according to claim 5, wherein the resistance value of the seventh resistor is 37 kOmega.
7. The intelligent power distribution cabinet according to any one of claims 1 to 6, wherein the first triode is a PNP type triode.
8. The intelligent power distribution cabinet according to any one of claims 1 to 6, wherein the second triode is an NPN-type triode.
9. The intelligent power distribution cabinet according to any one of claims 1 to 6, wherein the third transistor is an NPN transistor.
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| CN201911295882.8A CN110994799A (en) | 2019-12-16 | 2019-12-16 | Intelligent power distribution cabinet |
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| CN201911295882.8A CN110994799A (en) | 2019-12-16 | 2019-12-16 | Intelligent power distribution cabinet |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110175458A1 (en) * | 2003-02-04 | 2011-07-21 | Access Business Group International Llc | Adaptive inductive power supply |
| WO2014079134A1 (en) * | 2012-11-23 | 2014-05-30 | 上海顿格电子贸易有限公司 | Led constant current power supply circuit |
| CN204967644U (en) * | 2015-07-28 | 2016-01-13 | 广州市完美电子科技有限公司 | Take constant voltage power supply circuit of LED instruction |
| CN209659010U (en) * | 2019-04-09 | 2019-11-19 | 杭州美开电气有限公司 | A kind of intelligent power distribution cabinet |
-
2019
- 2019-12-16 CN CN201911295882.8A patent/CN110994799A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110175458A1 (en) * | 2003-02-04 | 2011-07-21 | Access Business Group International Llc | Adaptive inductive power supply |
| WO2014079134A1 (en) * | 2012-11-23 | 2014-05-30 | 上海顿格电子贸易有限公司 | Led constant current power supply circuit |
| CN204967644U (en) * | 2015-07-28 | 2016-01-13 | 广州市完美电子科技有限公司 | Take constant voltage power supply circuit of LED instruction |
| CN209659010U (en) * | 2019-04-09 | 2019-11-19 | 杭州美开电气有限公司 | A kind of intelligent power distribution cabinet |
Non-Patent Citations (1)
| Title |
|---|
| 袁光明 莫康生: "《晶体二极管实用电路集萃》", 30 May 1994 * |
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