CN106953211B - Extended line socket - Google Patents
Extended line socket Download PDFInfo
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- CN106953211B CN106953211B CN201710313675.5A CN201710313675A CN106953211B CN 106953211 B CN106953211 B CN 106953211B CN 201710313675 A CN201710313675 A CN 201710313675A CN 106953211 B CN106953211 B CN 106953211B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6666—Structural association with built-in electrical component with built-in electronic circuit with built-in overvoltage protection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/68—Structural association with built-in electrical component with built-in fuse
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/717—Structural association with built-in electrical component with built-in light source
- H01R13/7175—Light emitting diodes (LEDs)
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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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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to an extension line socket, belonging to the technical field of equipment power supply; the technical problem to be solved is as follows: the extension line socket is high in safety and charging efficiency; the technical scheme is as follows: the extension line socket comprises a protection circuit, a power indicator display circuit, a voltage stabilizing circuit and a multi-interface output circuit, wherein the input end of the protection circuit is connected with an external input circuit, the output end of the protection circuit is connected with the input end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit is connected with the input end of the multi-interface output circuit, and the output end of the multi-interface output circuit is connected with electric equipment; the power indicator lamp display circuit is arranged between the protection circuit and the voltage stabilizing circuit.
Description
Technical Field
The invention discloses an extension line socket, and belongs to the technical field of equipment power supply.
Background
The extension line socket is an essential part in daily life and can supply power for various household appliances and electric tools.
However, with the widespread use of the handheld devices, in order to charge the handheld devices to meet the needs of daytime life, higher requirements are put on the power adapters of extension line sockets, such as: the existing extension line socket can not meet the requirements of higher safety performance, higher output power, higher electric energy conversion rate, lower power and the like.
Disclosure of Invention
The invention overcomes the defects of the prior art, and solves the technical problems that: provided is an extension line socket with high safety and high charging efficiency.
In order to solve the technical problems, the invention adopts the technical scheme that: the extension line socket comprises a protection circuit, a power indicator lamp display circuit, a voltage stabilizing circuit and a multi-interface output circuit, wherein the input end of the protection circuit is connected with an external input circuit, the output end of the protection circuit is connected with the input end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit is connected with the input end of the multi-interface output circuit, and the output end of the multi-interface output circuit is connected with electric equipment; the power indicator lamp display circuit is arranged between the protection circuit and the voltage stabilizing circuit.
Preferably, the circuit structure of the protection circuit is: including fuse FRX1, piezo-resistor RV1 and thermistor RT1, fuse FRX 1's one end links to each other with external input circuit's live wire end L, fuse FRX 1's the other end links to each other with piezo-resistor RV 1's one end, protection circuit's output A1 respectively, piezo-resistor RV 1's the other end links to each other with thermistor RT 1's one end, protection circuit's output A2 respectively, thermistor RT 1's the other end links to each other with external input circuit's zero line end N.
Preferably, the circuit structure of the power indicator display circuit is: the LED voltage stabilizing circuit comprises a light emitting diode LED1, a voltage stabilizing diode DZ1, a resistor R1 and a capacitor C1, wherein the anode of the light emitting diode LED1 is respectively connected with the cathode of the voltage stabilizing diode DZ1, the output end A1 of the protection circuit and the input end B1 of the voltage stabilizing circuit, the cathode of the light emitting diode LED1 is respectively connected with the anode of the voltage stabilizing diode DZ1 and one end of the resistor R1, and the other end of the resistor R1 is connected with the output end A2 of the protection circuit and the input end B2 of the voltage stabilizing circuit after being connected with the capacitor C1 in series.
Preferably, the circuit structure of the voltage stabilizing circuit is as follows: the high-voltage transformer comprises a bridge rectifier chip BD1, wherein two input pins of the bridge rectifier chip BD1 are respectively connected with an input end B1 of a voltage stabilizing circuit and an input end B2 of the voltage stabilizing circuit, a positive output end of the bridge rectifier chip BD1 is respectively connected with one end of a resistor R11, one end of an inductor L1 and one end of a capacitor EC1, the other end of the resistor R11 is respectively connected with the other end of the inductor L1, one end of a capacitor EC1A, one end of a capacitor EC1C, one end of a resistor R12, one end of a resistor R13, one end of a capacitor C11 and an input end B3 of a first winding of a transformer T1, the other end of the capacitor EC1 is respectively connected with one end of an inductor L2 and a negative output end of the bridge rectifier chip BD1, and the other end of the inductor L2 is respectively connected with the other end of the capacitor EC1A, the other end of the capacitor EC1C, one end of a resistor R14 and an input end B6 of a second winding of the transformer T1 and then is simulated grounded; the other end of the resistor R12 is connected in series with a resistor R15 and then is respectively connected with one end of a capacitor ECA2, the cathode of a diode D11 and a pin VDD of a power supply chip U1, and the other end of the capacitor ECA2 is respectively connected with one end of a resistor R16, one end of a resistor R16A and a pin GND of the power supply chip U1 and then is simulated and grounded; the other end of the resistor R16 is connected with the other end of the resistor R16A, one end of the resistor R17, the source of the transistor Q1 and a pin CS of the power supply chip U1, the other end of the resistor R17 is connected with one end of the resistor R18 and the grid of the transistor Q1, the other end of the resistor R18 is connected with a pin GATE of the power supply chip U1, a pin FB of the power supply chip U1 is connected with the other end of the resistor R14 and one end of the resistor R19, the other end of the resistor R19 is connected with an input end B5 of a second winding of the transformer T1 and one end of an inductor L13, and the other end of the inductor L13 is connected with the anode of the diode D11; the other end of the resistor R13 is connected with the other end of the capacitor C11 and one end of the resistor R110 respectively, the other end of the resistor R110 is connected with the cathode of the diode D12, and the anode of the diode D12 is connected with the drain of the transistor Q1 and the input end B4 of the first winding of the transformer T1 respectively; the first output end of the transformer is respectively connected with a pin GND of a synchronous rectification chip U2, one end of a capacitor C21 and a pin GND of a synchronous rectification chip U2A, a pin AE of the synchronous rectification chip U2 is connected with a resistor RAE in series and then is respectively connected with a second output end of the transformer, one end of the resistor RAE1 and an input end B7 of a multi-interface output circuit, the other end of the resistor RAE1 is connected with a pin AE of the synchronous rectification chip U2A, the other end of the capacitor C21 is respectively connected with a pin VCC of the synchronous rectification chip U2 and a pin VCC of the synchronous rectification chip U2A, and a pin DRAIN of the synchronous rectification chip U2 is connected with a resistor RDD in series and then is respectively connected with a pin D of the synchronous rectification chip U2, one end of the resistor RDD1, a pin D of the synchronous rectification chip U2A and an input end B8 of the multi-interface output circuit; and the other end of the resistor RDD1 is connected with a pin DRAIN of the synchronous rectification chip U2A.
Preferably, the multi-interface output circuit has a circuit structure that: the device comprises an identification chip U4, an output interface USB1, an output interface USB2 and an output interface USB3;
the pin DP1 of the identification chip U4 is connected with the negative electrode of the data line of the output interface USB2, the pin DP2 of the identification chip U4 is connected with the positive electrode of the data line of the output interface USB2, the pin DM1 of the identification chip U4 is connected with the negative electrode of the data line of the output interface USB3, and the pin DM2 of the identification chip U4 is respectively connected with the grounding terminal of the output interface USB3, the positive electrode of the data line of the output interface USB3, the grounding terminal of the output interface USB2, the grounding terminal of the output interface USB1, one end of the resistor R21, one end of the capacitor EC3A and the input end B7 of the multi-interface output circuit and then is digitally grounded; the pin D1 of the identification chip U4 is connected with the input anode of the output interface USB3, the input anode of the output interface USB2, the input anode of the output interface USB1, the other end of the resistor R21, the other end of the capacitor EC3A and the input end B8 of the multi-interface output circuit after being connected with the resistor R22 in series; and the positive electrode of the data line of the output interface USB1 is connected with the negative electrode of the data of the output interface USB 1.
Compared with the prior art, the invention has the following beneficial effects.
The invention includes: the protection circuit, the power indicator display circuit, the voltage stabilizing circuit and the multi-interface output circuit; the protection circuit can play a role in resisting surge and lightning for the extension line socket, so that the safety of the invention is improved; the comprehensive conversion efficiency of the power supply is improved through the voltage stabilizing circuit, and the instantaneity of the indicating effect is improved through the power indicator display circuit; the whole extension line socket is simple in structure and extremely strong in practicability.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an extension cord socket according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an extension cord socket according to a second embodiment of the present invention;
in the figure: the circuit comprises a protection circuit 1, a power indicator lamp display circuit 2, a voltage stabilizing circuit 3 and a multi-interface output circuit 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some embodiments, but not all embodiments, of the present invention; 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.
Fig. 1 is a schematic structural diagram of an extension cord socket according to an embodiment of the present invention, and as shown in fig. 1, the extension cord socket includes a protection circuit 1, a power indicator display circuit 2, a voltage regulator circuit 3, and a multi-interface output circuit 4, an input end of the protection circuit 1 is connected to an external input circuit, an output end of the protection circuit 1 is connected to an input end of the voltage regulator circuit 3, an output end of the voltage regulator circuit 3 is connected to an input end of the multi-interface output circuit 4, and an output end of the multi-interface output circuit 4 is connected to an electric device; the power indicator lamp display circuit 2 is arranged between the protection circuit 1 and the voltage stabilizing circuit 3.
The first implementation includes: the protection circuit, the power indicator lamp display circuit, the voltage stabilizing circuit and the multi-interface output circuit; the protection circuit can play a role in resisting surge and lightning for the extension line socket, so that the safety of the invention is improved; the comprehensive conversion efficiency of the power supply is improved through the voltage stabilizing circuit, and the instantaneity of the indicating effect is improved through the power indicator display circuit; the whole extension line socket is simple in structure and extremely strong in practicability.
Fig. 2 is a schematic circuit structure diagram of an extension cord socket according to a second embodiment of the present invention, and as shown in fig. 2, the circuit structure of the protection circuit 1 is: including fuse FRX1, piezo-resistor RV1 and thermistor RT1, fuse FRX 1's one end links to each other with external input circuit's live wire end L, fuse FRX 1's the other end links to each other with piezo-resistor RV 1's one end, protection circuit 1's output A1 respectively, piezo-resistor RV 1's the other end links to each other with thermistor RT 1's one end, protection circuit 1's output A2 respectively, thermistor RT 1's the other end links to each other with external input circuit's zero line end N.
In the second embodiment, the protection circuit 1 includes a voltage dependent resistor RV1 and a thermistor RT1, and can achieve the effects of surge resistance and lightning protection.
Specifically, the circuit structure of the power indicator display circuit 2 is as follows: the LED driving circuit comprises a light emitting diode LED1, a voltage stabilizing diode DZ1, a resistor R1 and a capacitor C1, wherein the anode of the light emitting diode LED1 is respectively connected with the cathode of the voltage stabilizing diode DZ1, the output end A1 of a protection circuit 1 and the input end B1 of a voltage stabilizing circuit 3, the cathode of the light emitting diode LED1 is respectively connected with the anode of the voltage stabilizing diode DZ1 and one end of the resistor R1, and the other end of the resistor R1 is connected with the output end A2 of the protection circuit 1 and the input end B2 of the voltage stabilizing circuit 3 after being connected with the capacitor C1 in series; the power indicator display circuit 2 adopts a capacitance voltage reduction mode to realize current limiting, and has great difference from the traditional mode of achieving current limiting by connecting a resistor in series; in the second embodiment, the power indicator display circuit 2 rectifies the stepped-down alternating voltage in a manner that the light emitting diode LED1 and the voltage stabilizing diode DZ1 are connected in parallel; the power indicator lamp can be turned on and turned off immediately.
Further, the circuit structure of the voltage stabilizing circuit 3 is as follows: the high-voltage transformer comprises a bridge rectifier chip BD1, wherein two input pins of the bridge rectifier chip BD1 are respectively connected with an input end B1 of a voltage stabilizing circuit 3 and an input end B2 of the voltage stabilizing circuit 3, a positive output end of the bridge rectifier chip BD1 is respectively connected with one end of a resistor R11, one end of an inductor L1 and one end of a capacitor EC1, the other end of the resistor R11 is respectively connected with the other end of the inductor L1, one end of a capacitor EC1A, one end of a capacitor EC1C, one end of a resistor R12, one end of a resistor R13, one end of a capacitor C11 and an input end B3 of a first winding of a transformer T1, the other end of the capacitor EC1 is respectively connected with one end of the inductor L2 and a negative output end of the bridge rectifier chip BD1, and the other end of the inductor L2 is respectively connected with the other end of the capacitor EC1A, the other end of the capacitor EC1C, one end of a resistor R14 and an input end B6 of a second winding of the transformer T1 to be simulated to be grounded; the other end of the resistor R12 is connected in series with a resistor R15 and then is respectively connected with one end of a capacitor ECA2, the cathode of a diode D11 and a pin VDD of a power supply chip U1, and the other end of the capacitor ECA2 is respectively connected with one end of a resistor R16, one end of a resistor R16A and a pin GND of the power supply chip U1 and then is simulated and grounded; the other end of the resistor R16 is connected with the other end of the resistor R16A, one end of the resistor R17, a source electrode of the transistor Q1 and a pin CS of the power supply chip U1 respectively, the other end of the resistor R17 is connected with one end of the resistor R18 and a grid electrode of the transistor Q1 respectively, the other end of the resistor R18 is connected with a pin GATE of the power supply chip U1, a pin FB of the power supply chip U1 is connected with the other end of the resistor R14 and one end of the resistor R19 respectively, the other end of the resistor R19 is connected with an input end B5 of a second winding of the transformer T1 and one end of the inductor L13 respectively, and the other end of the inductor L13 is connected with the anode of the diode D11; the other end of the resistor R13 is connected with the other end of the capacitor C11 and one end of the resistor R110 respectively, the other end of the resistor R110 is connected with the cathode of the diode D12, and the anode of the diode D12 is connected with the drain of the transistor Q1 and the input end B4 of the first winding of the transformer T1 respectively; a first output end of the transformer is respectively connected with a pin GND of a synchronous rectification chip U2, one end of a capacitor C21 and a pin GND of a synchronous rectification chip U2A, a pin AE of the synchronous rectification chip U2 is connected with a resistor RAE in series and then is respectively connected with a second output end of the transformer, one end of the resistor RAE1 and an input end B7 of the multi-interface output circuit 4, the other end of the resistor RAE1 is connected with a pin AE of the synchronous rectification chip U2A, the other end of the capacitor C21 is respectively connected with a pin VCC of the synchronous rectification chip U2 and a pin VCC of the synchronous rectification chip U2A, and a pin DRAI N of the synchronous rectification chip U2 is connected with a resistor RDD in series and then is respectively connected with a pin D of the synchronous rectification chip U2, one end of the resistor RDD1, a pin D of the synchronous rectification chip U2A and an input end B8 of the multi-interface output circuit 4; and the other end of the resistor RDD1 is connected with a pin DRAIN of the synchronous rectification chip U2A.
The design of the voltage stabilizing circuit in the second embodiment enables the comprehensive conversion efficiency of the power supply to reach more than 85%, and the power supply conversion efficiency is high.
Furthermore, the circuit structure of the multi-interface output circuit 4 is: the device comprises an identification chip U4, an output interface USB1, an output interface USB2 and an output interface USB3; a pin DP1 of the identification chip U4 is connected with a negative electrode of a data line of the output interface USB2, a pin DP2 of the identification chip U4 is connected with a positive electrode of the data line of the output interface USB2, a pin DM1 of the identification chip U4 is connected with a negative electrode of the data line of the output interface USB3, and a pin DM2 of the identification chip U4 is respectively connected with a grounding terminal of the output interface USB3, a positive electrode of the data line of the output interface USB3, a grounding terminal of the output interface USB2, a grounding terminal of the output interface USB1, one end of a resistor R21, one end of a capacitor EC3A and an input end B7 of the multi-interface output circuit 4 and then is digitally grounded; the pin D1 of the identification chip U4 is connected with the input anode of the output interface USB3, the input anode of the output interface USB2, the input anode of the output interface USB1, the other end of the resistor R21, the other end of the capacitor EC3A and the input end B8 of the multi-interface output circuit 4 after being connected with the resistor R22 in series; the positive electrode of the data line of the output interface USB1 is connected with the negative electrode of the data of the output interface USB 1; in the second embodiment, a capacitor CY1 is connected in series between the analog ground and the digital ground.
The extension line socket has excellent performance, has low no-load power consumption which reaches 0.08W, and responds to national energy-saving calls; the total power can reach 16.5W, the comprehensive efficiency is high, can reach more than 85%, just many interface output circuit have the recognition function, the handheld terminal device practicality of most on the matching market that can be fine is extremely strong.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. Extension line socket, its characterized in that: the power supply protection circuit comprises a protection circuit (1), a power indicator display circuit (2), a voltage stabilizing circuit (3) and a multi-interface output circuit (4), wherein the input end of the protection circuit (1) is connected with an external input circuit, the output end of the protection circuit (1) is connected with the input end of the voltage stabilizing circuit (3), the output end of the voltage stabilizing circuit (3) is connected with the input end of the multi-interface output circuit (4), and the output end of the multi-interface output circuit (4) is connected with an electric device; the power indicator lamp display circuit (2) is arranged between the protection circuit (1) and the voltage stabilizing circuit (3);
the circuit structure of the voltage stabilizing circuit (3) is as follows: the high-voltage transformer comprises a bridge rectifier chip BD1, wherein two input pins of the bridge rectifier chip BD1 are respectively connected with an input end B1 of a voltage stabilizing circuit (3) and an input end B2 of the voltage stabilizing circuit (3), a positive output end of the bridge rectifier chip BD1 is respectively connected with one end of a resistor R11, one end of an inductor L1 and one end of a capacitor EC1, the other end of the resistor R11 is respectively connected with the other end of the inductor L1, one end of a capacitor EC1A, one end of a capacitor EC1C, one end of a resistor R12, one end of a resistor R13, one end of the capacitor C11 and an input end B3 of a first winding of a transformer T1, the other end of the capacitor EC1 is respectively connected with one end of the inductor L2 and a negative output end of the bridge rectifier chip BD1, and the other end of the inductor L2 is respectively connected with the other end of the capacitor EC1A, the other end of the capacitor EC1C, one end of a resistor R14 and an input end B6 of a second winding of the transformer T1 and then is in a simulated grounding mode;
the other end of the resistor R12 is connected in series with a resistor R15 and then is respectively connected with one end of a capacitor ECA2, the cathode of a diode D11 and a pin VDD of a power supply chip U1, and the other end of the capacitor ECA2 is respectively connected with one end of a resistor R16, one end of a resistor R16A and a pin GND of the power supply chip U1 and then is simulated and grounded; the other end of the resistor R16 is connected with the other end of the resistor R16A, one end of the resistor R17, the source of the transistor Q1 and a pin CS of the power supply chip U1, the other end of the resistor R17 is connected with one end of the resistor R18 and the grid of the transistor Q1, the other end of the resistor R18 is connected with a pin GATE of the power supply chip U1, a pin FB of the power supply chip U1 is connected with the other end of the resistor R14 and one end of the resistor R19, the other end of the resistor R19 is connected with an input end B5 of a second winding of the transformer T1 and one end of an inductor L13, and the other end of the inductor L13 is connected with the anode of the diode D11;
the other end of the resistor R13 is connected with the other end of the capacitor C11 and one end of the resistor R110 respectively, the other end of the resistor R110 is connected with the cathode of the diode D12, and the anode of the diode D12 is connected with the drain of the transistor Q1 and the input end B4 of the first winding of the transformer T1 respectively;
the first output end of the transformer is respectively connected with a pin GND of a synchronous rectification chip U2, one end of a capacitor C21 and a pin GND of a synchronous rectification chip U2A, a pin AE of the synchronous rectification chip U2 is connected with a resistor RAE in series and then is respectively connected with a second output end of the transformer, one end of the resistor RAE1 and an input end B7 of a multi-interface output circuit (4), the other end of the resistor RAE1 is connected with a pin AE of the synchronous rectification chip U2A, the other end of the capacitor C21 is respectively connected with a pin VCC of the synchronous rectification chip U2 and a pin VCC of the synchronous rectification chip U2A, and a pin DRAIN of the synchronous rectification chip U2 is connected with a resistor RDD in series and then is respectively connected with a pin D of the synchronous rectification chip U2, one end of the resistor RDD1, a pin D of the synchronous rectification chip U2A and an input end B8 of the multi-interface output circuit (4); the other end of the resistor RDD1 is connected with a pin DRAIN of a synchronous rectification chip U2A;
the multi-interface output circuit (4) has the circuit structure that: the device comprises an identification chip U4, an output interface USB1, an output interface USB2 and an output interface USB3;
the pin DP1 of the identification chip U4 is connected with the negative electrode of the data line of the output interface USB2, the pin DP2 of the identification chip U4 is connected with the positive electrode of the data line of the output interface USB2, the pin DM1 of the identification chip U4 is connected with the negative electrode of the data line of the output interface USB3, and the pin DM2 of the identification chip U4 is respectively connected with the grounding terminal of the output interface USB3, the positive electrode of the data line of the output interface USB3, the grounding terminal of the output interface USB2, the grounding terminal of the output interface USB1, one end of the resistor R21, one end of the capacitor EC3A and the input end B7 of the multi-interface output circuit (4) and then is digitally grounded; the pin D1 of the identification chip U4 is connected with the input anode of the output interface USB3, the input anode of the output interface USB2, the input anode of the output interface USB1, the other end of the resistor R21, the other end of the capacitor EC3A and the input end B8 of the multi-interface output circuit (4) after being connected with the resistor R22 in series; and the positive electrode of the data line of the output interface USB1 is connected with the negative electrode of the data of the output interface USB 1.
2. The extension cord socket of claim 1, wherein: the circuit structure of the protection circuit (1) is as follows: including fuse FRX1, piezo-resistor RV1 and thermistor RT1, fuse FRX 1's one end links to each other with external input circuit's live wire end L, fuse FRX 1's the other end links to each other with piezo-resistor RV 1's one end, protection circuit (1)'s output A1 respectively, piezo-resistor RV 1's the other end links to each other with thermistor RT 1's one end, protection circuit (1)'s output A2 respectively, thermistor RT 1's the other end links to each other with external input circuit's zero line end N.
3. The extension cord socket of claim 1, wherein: the circuit structure of the power indicator lamp display circuit (2) is as follows: the LED voltage stabilizing circuit comprises a light emitting diode LED1, a voltage stabilizing diode DZ1, a resistor R1 and a capacitor C1, wherein the anode of the light emitting diode LED1 is respectively connected with the cathode of the voltage stabilizing diode DZ1, the output end A1 of a protection circuit (1) and the input end B1 of a voltage stabilizing circuit (3), the cathode of the light emitting diode LED1 is respectively connected with the anode of the voltage stabilizing diode DZ1 and one end of the resistor R1, and the other end of the resistor R1 is connected with the output end A2 of the protection circuit (1) and the input end B2 of the voltage stabilizing circuit (3) after being connected with the capacitor C1 in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710313675.5A CN106953211B (en) | 2017-05-05 | 2017-05-05 | Extended line socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710313675.5A CN106953211B (en) | 2017-05-05 | 2017-05-05 | Extended line socket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106953211A CN106953211A (en) | 2017-07-14 |
| CN106953211B true CN106953211B (en) | 2022-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710313675.5A Active CN106953211B (en) | 2017-05-05 | 2017-05-05 | Extended line socket |
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| Country | Link |
|---|---|
| CN (1) | CN106953211B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2117656U (en) * | 1991-09-23 | 1992-09-30 | 孙宁 | Low voltage protector for electric appliances |
| CN2507172Y (en) * | 2001-09-27 | 2002-08-21 | 高德强 | Lightning protector for computer |
| CN204652249U (en) * | 2015-06-19 | 2015-09-16 | 温州市麦特力克电器有限公司 | A kind of USB socket |
| CN205960338U (en) * | 2016-06-14 | 2017-02-15 | 安徽师范大学 | Power extension line that can regularly cut -off |
| CN106487212A (en) * | 2016-12-19 | 2017-03-08 | 裴永君 | The power control circuit of electricity in a kind of time delay |
| CN106487081A (en) * | 2016-12-21 | 2017-03-08 | 江西佰仕通电子科技有限公司 | Mains charger circuit |
-
2017
- 2017-05-05 CN CN201710313675.5A patent/CN106953211B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2117656U (en) * | 1991-09-23 | 1992-09-30 | 孙宁 | Low voltage protector for electric appliances |
| CN2507172Y (en) * | 2001-09-27 | 2002-08-21 | 高德强 | Lightning protector for computer |
| CN204652249U (en) * | 2015-06-19 | 2015-09-16 | 温州市麦特力克电器有限公司 | A kind of USB socket |
| CN205960338U (en) * | 2016-06-14 | 2017-02-15 | 安徽师范大学 | Power extension line that can regularly cut -off |
| CN106487212A (en) * | 2016-12-19 | 2017-03-08 | 裴永君 | The power control circuit of electricity in a kind of time delay |
| CN106487081A (en) * | 2016-12-21 | 2017-03-08 | 江西佰仕通电子科技有限公司 | Mains charger circuit |
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| Publication number | Publication date |
|---|---|
| CN106953211A (en) | 2017-07-14 |
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