CN109378890A - A kind of multifunctional power supply device - Google Patents
A kind of multifunctional power supply device Download PDFInfo
- Publication number
- CN109378890A CN109378890A CN201811253824.4A CN201811253824A CN109378890A CN 109378890 A CN109378890 A CN 109378890A CN 201811253824 A CN201811253824 A CN 201811253824A CN 109378890 A CN109378890 A CN 109378890A
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- China
- Prior art keywords
- circuit
- electrically connected
- pin
- power supply
- direct current
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a kind of multifunctional power supply device, and there are three types of use patterns: 1. connection alternating currents and equipment are used for power supply to the device;2. connecting reserve battery and equipment, pass through battery discharge power supply to the device;Reserve battery is connected while 3. connecting alternating current with equipment, and power supply to the device while gives reserve battery charging.Power supply device provided by the invention has the function of powering and giving reserve battery charge and discharge simultaneously.
Description
Technical field
The present invention relates to field of power supplies, in particular to a kind of multifunctional power supply device.
Background technique
Applying for electronic equipment is more and more extensive in society now, and the power supply of these electronic equipments is equipped with dedicated
Power supply device, the both ends of the general apparatus main body are then respectively equipped with the electricity of the power input interface and power supply to the device that connect alternating current
Source output interface.Power supply device can only be powered to equipment, be had a single function, and when having a power failure, or at user
When outdoor can not access alternating current, these power supply devices just can not continue to be caused to power supply for electrical equipment using upper inconvenience,
It is restricted the use environment of electronic equipment.
Summary of the invention
For prior art problem, the present invention provides a kind of multifunctional power supply device, and there are three types of use patterns: 1. connection cities
Electricity and equipment are used for power supply to the device;2. connecting reserve battery and equipment, pass through battery discharge power supply to the device;3. connecting city
Reserve battery is connected while electricity is with equipment, and power supply to the device while gives reserve battery charging.Power supply dress provided by the invention
It sets while having the function of powering and giving reserve battery charge and discharge.
The present invention it is specific the technical solution adopted is that: a kind of multifunctional power supply device, including shell are provided, are equipped in shell
Power-switching circuit, shell both ends end face are respectively arranged with input port and output terminal, and input port is for connecting alternating current
L, the both ends N, output terminal is for connecting load.End on shell one side close to output terminal is provided with electric connector, electricity
Connector two sides are provided with interconnecting piece
Preferably, interconnecting piece is rail structure.Reserve battery is equipped with the sliding slot cooperated with sliding rail, with the sliding rail being arranged on shell
Engagement is realized detachably connected.The end of reserve battery is equipped with electric connection terminal, and the respective ends of the shell are provided with suitable
The electric connector matched, electric connection terminal are electrically connected when sliding slot is fully engaged with sliding rail with electric connector.
Preferably, reserve battery is rechargeable lithium battery.
It is provided with switching power circuit in shell cavity, including the filter circuit, rectification circuit, direct current being successively electrically connected
Voltage regulator circuit, transformer conversion circuit, output voltage stabilizing circuit, filter circuit and input port are electrically connected, input port access
Alternating current constitutes the input terminal of filter circuit, and output voltage stabilizing circuit is electrically connected with output terminal, electric connector respectively.
Switching power circuit further includes control circuit and feed circuit, and control circuit includes the switching power source chip of 6 pins
Filter circuit, rectification circuit, direct current regulation circuit is electrically connected in U1, switching power source chip U1, and electric connector and output are steady
Volt circuit is electrically connected control circuit by feed circuit.
Transformer conversion circuit includes high frequency transformer T1, and direct current regulation circuit is electrically connected high by armature winding TR1
Secondary windings TR2 on frequency power transformer T1, high frequency transformer T1 constitutes the input terminal of output voltage stabilizing circuit (24), high frequency transformer
Auxiliary winding TR3 Same Name of Ends ground connection and the other end on T1 are electrically connected Switching Power Supply by concatenated resistance R21, diode D2
Chip U1, the one end resistance R21 are electrically connected auxiliary winding TR3, and the other end is electrically connected the anode of diode D2.
Power supply device of the invention adds a dismountable reserve battery on the shell that can work independently, and is having alternating current
In the case of alternating current is converted after power supply to the device, while can charge to reserve battery, in the case where no alternating current, by reserve battery
Power supply to the device not will cause device looses power, convenient for users to use.
Detailed description of the invention
The invention will be further described for attached drawing, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.
Fig. 1 is the multifunctional power supply device front view that one embodiment of the invention provides.
Fig. 2 is the multifunctional power supply device right view that one embodiment of the invention provides.
Fig. 3 is the multifunctional power supply device left view that one embodiment of the invention provides.
Fig. 4 is the switching power circuit schematic diagram that one embodiment of the invention provides.
Fig. 5 is the circuit diagram for the switching power circuit that one embodiment of the invention provides.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
As illustrated in fig. 1-3, a kind of multifunctional power supply device that one embodiment of the invention provides, including 1 both ends end of shell
Face is respectively arranged with input port 14 and output terminal 13, is arranged on 1 one side of shell close to the end of the output terminal 13
There is electric connector 10,10 two sides of electric connector are provided with the first sliding rail 11 and the second sliding rail 12, the power supply device input port 14
Alternating current can be accessed by attaching plug, it is power electronic equipment that the output terminal 13 of the power supply device, which is electrically connected electronic equipment,.It should
Power supply device can be detachably connected reserve battery by the first sliding rail 11 and the second sliding rail 12, and reserve battery is from 11 He of the first sliding rail
The open end of second sliding rail 12 slides into along the first sliding rail 11 and the second sliding rail 12, can be real using the cooperation between sliding slot and sliding rail
Detachable mechanical connection between existing reserve battery and multifunctional power supply device.
It is the functional block diagram of the switching power circuit of the enclosure interior of multifunctional power supply device in the present embodiment shown in Fig. 4,
Switching power circuit includes the filter circuit 20 being successively electrically connected, rectification circuit 21, direct current regulation circuit 22, transformer conversion
Circuit 23, output voltage stabilizing circuit 24, filter circuit 20 and input port 14 are electrically connected, and input port 14 accesses alternating current and constitutes filter
The input terminal of wave circuit 20, output voltage stabilizing circuit 24 are electrically connected with output terminal 13, electric connector 10 respectively.Switch power supply
Road further includes control circuit 26 and feed circuit 25, and control circuit 26 includes the switching power source chip U1, U1 of 6 pins chip-shaped
It number is OB2532 chip, filter circuit 20, rectification circuit 21, direct current regulation circuit is electrically connected in switching power source chip U1
22, electric connector 10 and output voltage stabilizing circuit 24 pass through the electric connection control circuit 26 of feed circuit 25.Electric connector 10 is used for
Connect the anode and cathode of reserve battery.
The circuit diagram of switching power circuit as shown in Figure 5, transformer conversion circuit 23 include high frequency transformer T1, and direct current is steady
Volt circuit 22 is electrically connected high frequency transformer T1 by armature winding TR1, and the secondary windings TR2 on high frequency transformer T1 constitutes defeated
The input terminal of voltage regulator circuit 24 out, auxiliary winding TR3 Same Name of Ends ground connection and the other end on high frequency transformer T1 pass through concatenated
Resistance R21, diode D2 are electrically connected switching power source chip U1, and the one end resistance R21 is electrically connected auxiliary winding TR3, other end electricity
Connect the anode of diode D2.
Filter circuit 20 be protective tube F1, safe capacitor CX1, common mode inductance L1, common mode inductance L2 and resistance R1, R2, R3,
The EMI filter circuit of R4 composition, protective tube F1 are connected in the L phase of input terminal, resistance R1, R2, R3, R4 series connection and and safety electricity
Hold CX1 to be connected in parallel between common mode inductance L1, common mode inductance L2.Rectification circuit 21 include rectifier bridge BD1, direct current low frequency capacitive C8 and
Capacitor C4, direct current low frequency capacitive C8 and capacitor C4 parallel connection and the output and ground for being connected across rectification circuit 21.Alternating current passes through
EMI filter circuit is rectified to rectifier bridge BD1 switchs to direct current output to direct current regulation circuit 22 for exchange input.DC voltage-stabilizing
22 output end of circuit is in series with a diode D1, the Same Name of Ends of the anode electrical connection armature winding TR1 of diode D1.
The pin 1 of switching power source chip U1 is the end GND, pin 2 is the end GATE, pin 3 is the end CS, pin 4 be the end INV,
Pin 5 is the end COMP, pin 6 is vdd terminal.Pin 3 is grounded by concatenated resistance R12 and resistance R15, and according to resistance R12
Overload protection is carried out with the voltage value on resistance R15;Optocoupler U2B, resistance R18, capacitor are parallel between pin 2 and ground terminal
C2;Pin 1, pin 4 and direct current regulation circuit 22 is electrically connected in pin 6;Pin 5 is electrically connected filtering by resistance R5
Circuit 20 is electrically connected pin 1 by resistance C3;Pin 4 is grounded by capacitor C1, is connected by concatenated resistance R21, R22
Between rectification circuit 21, direct current regulation circuit 22, pass through resistance R11 connection feed circuit 25;Pin 1 is grounded.Pin 6 draws
It is electrically connected between foot 4 and direct current regulation circuit 22 by mos pipe Q3, pin 6 is electrically connected the pole G of mos pipe Q3, pin 4
It is electrically connected the pole S of mos pipe Q3, the pole D of the anode electrical connection mos pipe Q3 of the diode D1 of direct current regulation circuit 22.
Output voltage stabilizing circuit 24 includes positive output terminals B+ and negative output terminals B-.The Same Name of Ends of secondary windings TR2
It is electrically connected positive output terminals B+ by diode D4, the other end is electrically connected negative output terminals B-, secondary windings TR2 connection
The anode of diode D4.Several capacitors, positive output terminals B are parallel between positive output terminals B+ and negative output terminals B-
+ and negative output terminals B- electrical connection output terminal 13.
Electric connector 10 is electrically connected output voltage stabilizing circuit 24 by common mode inductance L3.It is provided on feed circuit 25 luminous
Diode (LED) 1, feed circuit 25 include control circuit 26 by concatenated higfh-tension ceramics capacitor CY3, CY4 electric connection.
When input port 14 has alternating current input, which passes through filter circuit 20, rectification circuit 21, direct current regulation circuit
22, transformer conversion circuit 23 is converted into input voltage, and input voltage enters after output voltage stabilizing circuit 24 through output terminal 13
Export the power supply of electron equipment;If multifunctional power supply device is electrically connected reserve battery, input voltage enters output pressure stabilizing electricity
It is charged simultaneously by electric connector 10 to reserve battery behind road 24, Light-emitting diode LED 1 is provided on feed circuit 25 and is used as and is filled
Electric indicator light.Control circuit 26 can ensure that the voltage stability in electron equipment power supply process.
When input port 14 is inputted without alternating current, such as in the case where power failure, multifunctional power supply device is electrically connected standby
With battery, electric connector 10 is electrically connected the output voltage stabilizing circuit 24 by common mode inductance L3, is accessed and is exported by reserve battery
24 electron equipment of voltage regulator circuit continues to power, and works normally equipment.
It can be existing various rechargeable batteries, example for the reserve battery when Wu Shi is electrically accessed for power electronic equipment
Such as lithium battery.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of multifunctional power supply device, including shell (1), it is characterised in that:
Shell (1) the both ends end face is respectively arranged with input port (14) and output terminal (13);
End on shell (1) one side close to the output terminal (13) is provided with electric connector (10), described to be electrically connected
It connects device (10) two sides and is provided with interconnecting piece;
Be provided with switching power circuit in shell (1) cavity, including be successively electrically connected filter circuit (20), rectified current
Road (21), direct current regulation circuit (22), transformer conversion circuit (23), output voltage stabilizing circuit (24), the filter circuit (20)
It is electrically connected with the input port (14), input port (14) the access alternating current constitutes the input of the filter circuit (20)
End, the output voltage stabilizing circuit (24) are electrically connected with the output terminal (13), electric connector (10) respectively;
The switching power circuit further includes control circuit (26) and feed circuit (25), and the control circuit (26) is drawn including 6
The filter circuit (20), rectification circuit is electrically connected in the switching power source chip U1, the switching power source chip U1 of foot
(21), direct current regulation circuit (22), the electric connector (10) and output voltage stabilizing circuit (24) pass through the feed circuit (25)
It is electrically connected the control circuit (26);
The transformer conversion circuit (23) includes high frequency transformer T1, and the direct current regulation circuit (22) passes through armature winding
TR1 is electrically connected the high frequency transformer T1, and the secondary windings TR2 on the high frequency transformer T1 constitutes the output pressure stabilizing electricity
The input terminal on road (24), auxiliary winding TR3 Same Name of Ends ground connection and the other end on the high frequency transformer T1 pass through concatenated electricity
It hinders R21, diode D2 and is electrically connected the switching power source chip U1, the one end the resistance R21 is electrically connected the auxiliary winding
TR3, the other end are electrically connected the anode of the diode D2.
2. a kind of multifunctional power supply device according to claim 1, it is characterised in that: the interconnecting piece is rail structure (12;
11).
3. a kind of multifunctional power supply device according to claim 1, it is characterised in that:
The filter circuit (20) be protective tube F1, safe capacitor CX1, common mode inductance L1, common mode inductance L2 and resistance R1, R2,
The EMI filter circuit of R3, R4 composition, the protective tube F1 are connected in the L phase of input terminal, resistance R1, R2, R3, R4 string
Join and is connected in parallel between the common mode inductance L1, common mode inductance L2 with the safe capacitor CX1;
The rectification circuit (21) include rectifier bridge BD1, direct current low frequency capacitive C8 and capacitor C4, the direct current low frequency capacitive C8 and
Capacitor C4 is in parallel and is connected across the output and ground of the rectification circuit (21);
The alternating current by EMI filter circuit to rectifier bridge BD1 rectified will exchange input switch to direct current output to it is described directly
It flows voltage regulator circuit (22).
4. a kind of multifunctional power supply device according to claim 3, it is characterised in that: direct current regulation circuit (22) output
End is in series with a diode D1, and the anode of the diode D1 is electrically connected the Same Name of Ends of the armature winding TR1.
5. a kind of multifunctional power supply device according to claim 4, it is characterised in that:
The pin 1 of the switching power source chip U1 is the end GND, pin 2 is the end GATE, pin 3 is the end CS, pin 4 be the end INV,
Pin 5 is the end COMP, pin 6 is vdd terminal;
The pin 3 is grounded by concatenated resistance R12 and resistance R15, and according to the voltage value on resistance R12 and resistance R15
Carry out overload protection;
Optocoupler U2B, resistance R18, capacitor C2 are parallel between the pin 2 and ground terminal;
Pin 1, pin 4 and the direct current regulation circuit (22) is electrically connected in the pin 6;
The pin 5 is electrically connected the filter circuit (20) by resistance R5, is electrically connected pin 1 by resistance C3;
The pin 4 is grounded by capacitor C1, is connected to the rectification circuit (21), direct current by concatenated resistance R21, R22
Between voltage regulator circuit (22), pass through the resistance R11 connection feed circuit (25);
The pin 1 is grounded.
6. a kind of multifunctional power supply device according to claim 5, it is characterised in that: the pin 6, pin 4 and described
It is electrically connected between direct current regulation circuit (22) by mos pipe Q3, the pin 6 is electrically connected the pole G of the mos pipe Q3, institute
The pole S that pin 4 is electrically connected the mos pipe Q3 is stated, the direct current regulation circuit (22) is electrically connected the pole D of the mos pipe Q3.
7. a kind of multifunctional power supply device according to claim 6, it is characterised in that: the two of the direct current regulation circuit (22)
The anode of pole pipe D1 is electrically connected the pole D of the mos pipe Q3.
8. a kind of multifunctional power supply device according to claim 1, it is characterised in that:
The output voltage stabilizing circuit (24) includes positive output terminals (B+) and negative output terminals (B-);
The Same Name of Ends of the secondary windings TR2 is electrically connected the positive output terminals (B+), other end electricity by diode D4
It connects the negative output terminals (B-), the secondary windings TR2 connects the anode of the diode D4;
Several capacitors, the positive output terminals are parallel between the positive output terminals (B+) and negative output terminals (B-)
(B+) and negative output terminals (B-) are electrically connected output terminal (13).
9. a kind of multifunctional power supply device according to claim 1, it is characterised in that: the electric connector (10) passes through common mode
Inductance L3 is electrically connected the output voltage stabilizing circuit (24).
10. a kind of multifunctional power supply device according to claim 1, it is characterised in that: be arranged on the feed circuit (25)
There is Light-emitting diode LED 1, the feed circuit (25) described in concatenated higfh-tension ceramics capacitor CY3, CY4 electric connection by including
Control circuit (26).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811253824.4A CN109378890A (en) | 2018-10-26 | 2018-10-26 | A kind of multifunctional power supply device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811253824.4A CN109378890A (en) | 2018-10-26 | 2018-10-26 | A kind of multifunctional power supply device |
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CN109378890A true CN109378890A (en) | 2019-02-22 |
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ID=65402129
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CN201811253824.4A Pending CN109378890A (en) | 2018-10-26 | 2018-10-26 | A kind of multifunctional power supply device |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201409013Y (en) * | 2009-04-27 | 2010-02-17 | 深圳市睿德电子实业有限公司 | Power supply adaptor |
US9088217B2 (en) * | 2009-08-20 | 2015-07-21 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for load compensation with primary-side sensing and regulation for flyback power converters |
CN107800310A (en) * | 2017-11-17 | 2018-03-13 | 上海新进半导体制造有限公司 | The power source supply method and control chip of control chip in inverse-excitation type switch power-supply |
-
2018
- 2018-10-26 CN CN201811253824.4A patent/CN109378890A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201409013Y (en) * | 2009-04-27 | 2010-02-17 | 深圳市睿德电子实业有限公司 | Power supply adaptor |
US9088217B2 (en) * | 2009-08-20 | 2015-07-21 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for load compensation with primary-side sensing and regulation for flyback power converters |
CN107800310A (en) * | 2017-11-17 | 2018-03-13 | 上海新进半导体制造有限公司 | The power source supply method and control chip of control chip in inverse-excitation type switch power-supply |
Non-Patent Citations (3)
Title |
---|
周少武: "《计算机控制技术》", 31 August 2017 * |
李宏: "《电力电子设备用器件与集成电路应用指南第3册 传感、保护用和功率集成电路》", 31 December 2001 * |
王加祥: "《实用电路分析及应用》", 31 May 2015 * |
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Application publication date: 20190222 |