CN111799608A - Socket circuit and socket with same - Google Patents
Socket circuit and socket with same Download PDFInfo
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- CN111799608A CN111799608A CN202010655201.0A CN202010655201A CN111799608A CN 111799608 A CN111799608 A CN 111799608A CN 202010655201 A CN202010655201 A CN 202010655201A CN 111799608 A CN111799608 A CN 111799608A
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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
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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
- H01R13/6675—Structural association with built-in electrical component with built-in electronic circuit with built-in power supply
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Abstract
The invention discloses a socket circuit and discloses a socket with the socket circuit, wherein the socket circuit comprises an auxiliary power supply module, a power supply control module, a switch module, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second switch tube Q2, a third switch tube Q3, a fourth switch tube Q4, a first diode D1, a second diode D2, a third diode D3, a relay RL1, a photoelectric coupler IC1, a first wire connecting part CN1 and a second wire connecting part. Through the connection cooperation of above-mentioned device, can effectively promote the security performance of socket.
Description
Technical Field
The invention relates to the technical field of power supply devices, in particular to a socket circuit and a socket with the same.
Background
The outlet is typically connected to the live neutral of an external power source, and some are also connected to ground. The socket is usually provided with a jack for connecting a power supply line with a load, and when the socket is not connected with the load, the jack can be in an exposed state and is easy to be touched to cause injury to a human body. In addition, when the load is overloaded or the ground wire is bad, if the external power supply is not cut off in time, the safety accident of electric leakage is easy to occur. However, in the prior art, most of switch sockets realize the on-off of current through mechanical contact, and the switch socket is simple in structure, low in cost and insufficient in safety.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a socket circuit which can effectively improve the safety performance of a socket.
The invention also provides a socket with the socket circuit.
A receptacle circuit according to an embodiment of the first aspect of the invention comprises: an auxiliary power module, a power control module, a switch module, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second switch Q2, a third switch Q3, a fourth switch Q4, a first diode D1, a second diode D2, a third diode D3, a relay RL1, a photocoupler IC1, a first wire connecting portion CN1, a second wire connecting portion, wherein the auxiliary power module is respectively connected with an input end of the third switch Q3, one end of the first resistor R1, and one end of the power control module, the other end of the first resistor R1 is connected with an anode 1 8 of the first diode D1, one end of a switch of the relay RL 2 is connected with a live wire, the other end of the relay RL 2 is connected with the first wire connecting portion CN1, and an input end of a coil 1 of the relay RL 4 is connected with the auxiliary power module, an output end of a coil of the relay RL1 is connected with an input end of a fourth switching tube Q4, an output end of the fourth switching tube Q4 is grounded, a control end of the fourth switching tube Q4 is connected with one end of the switch module, the other end of the switch module is connected with the power supply control module, an output end of the third switching tube Q3 is connected with one end of a third resistor R3, the other end of the third resistor R3 is connected with an anode of a second diode D2, a cathode of the second diode D2 is connected between a switch of the relay RL1 and a connection line of the first wire connecting portion CN1, a control end of the third switching tube Q3 is connected with an input end of the second switching tube Q2, an output end of the second switching tube Q2 is grounded, a control end of the second switching tube Q2 is connected between a connection line of the first resistor R1 and an anode of the first diode D1, two ends of the second resistor R2 are respectively connected to the input end and the control end of the third switching tube Q3, the power control module is further connected to the emitter of the photocoupler IC1, one end of the fourth resistor R4 is grounded, the other end is connected between the power control module and the connection line of the emitter of the photocoupler IC1, the collector of the photocoupler IC1 is connected to the auxiliary power module, the anode of the photocoupler IC1 is connected to one end of the fifth resistor R5, the cathode of the photocoupler IC1 is connected to one end of the sixth resistor R6, the cathode of the photocoupler IC1 is further grounded to the connection line of one end of the sixth resistor R6, the other end of the fifth resistor R5 is connected between the cathode of the photocoupler IC1 and the connection line of one end of the sixth resistor R6, and the other end of the sixth resistor R6 is connected to the anode of the third diode D3, a cathode of the third diode D3 is connected between the switch of the relay RL1 and the connection line of the first wire connection portion CN1, one end of the second wire connection portion is connected to a zero line, and the other end is connected between the fifth resistor R5 and the connection line of the anode of the photocoupler IC 1.
The socket circuit according to the embodiment of the invention has at least the following beneficial effects: the live input is connected to the input of relay RL1, and the normally open output of relay RL1 is connected to first wire connection CN 1. The zero line is connected to the second wire connecting part, the second wire connecting part is further connected to the anode of the diode at the input end of the photoelectric coupler IC1, the cathode is grounded, the fifth resistor R5 is connected with the input end of the photoelectric coupler IC1 in parallel and provides bias voltage, the cathode of the photoelectric coupler IC1 is connected with the sixth resistor R6 which is a current-limiting resistor, the sixth resistor R6 is connected with the anode of the third diode D3 in series, and the cathode of the third diode D3 is connected with the input live wire. The photoelectric coupler IC1 outputs collector voltage of the transistor, the emitter and the load sample the fourth resistor R4, the load detection output signal is connected to the emitter of the photoelectric coupler IC1, and the load detection output signal drives the fourth switch tube Q4. The voltage is connected with the input end of a third switching tube Q3, the output end of the third switching tube Q3 is connected with a third resistor R3, the third resistor R3 is connected with the anode of a second diode D2, the cathode of the second diode D2 is connected with the normally open output of a relay RL1, the second resistor R2 is a bias resistor of the control end and the input end of the third switching tube Q3, and the control end of the third switching tube Q3 is connected with the input end of the second switching tube Q2. The output end of the first resistor R1 is connected to the anode of an isolation diode first diode D1, the cathode of the first diode D1 is connected to the normally-open output end of the relay RL1, and the output end of the first resistor R1 is further connected to the control end of the second switch tube Q2. The socket switch signal is connected to the control end of the fourth switch tube Q4, the input end of the fourth switch tube Q4 is grounded, and the input end of the fourth switch tube Q4 is connected with the coil of the relay.
When the circuit is connected with electricity normally, namely the live wire and the zero wire are connected, the auxiliary power supply module outputs auxiliary voltage, if no load is inserted into the socket hole, namely the first wire connecting part CN1 and the second wire connecting part are not connected with the load, the load detection circuit comprises the auxiliary power supply module, the third switching tube Q3, the third resistor R3, the second diode D2, the first wire connecting part CN1, the second wire connecting part, the photoelectric coupler IC1 and the fourth resistor R4, because the first wire connecting part CN1 and the second wire connecting part are open-circuited, the photoelectric coupler IC1 has no current, the voltage of the sampling resistor R4 is zero, no load detection output signal exists at the moment, the relay RL1 controls the fourth switching tube Q4 not to be switched on, the relay RL1 does not act, the live wire is open-circuited, the socket is not powered, and even if the live wire jack is touched, the socket does not get an electric shock.
When the circuit is connected with the power supply and is normal, when a load is inserted, a socket switching signal is turned on, namely the fourth switching tube Q4 is in saturated conduction, the output end of the second switching tube Q2 is pulled down to a loop ground, if the load is not overloaded or short-circuited, the control end of the second switching tube Q2 obtains a switching-on voltage, the second switching tube Q2 is conducted, the third switching tube Q3 is conducted, the load detection loop works, the circuit performs load detection, finally, current passes through the input end of the photoelectric coupler IC1, the fourth resistor R4 detects the voltage to drive the relay to control the fourth switching tube Q4, the relay RL1 is conducted, the live wire voltage is connected to the first wire connecting part CN1, and the load supplies power. At this time, the load detection circuit auxiliary power supply module Q3, the third resistor R3 and the second diode D2 are not required to be turned off, and the load detection signal is maintained to be continuously conducted by currents generated by a loop of the zero line, the sixth resistor R6 at the input end of the photoelectric coupler IC1, the seventh resistor R7, the third diode D3 and the live wire.
If the load is overloaded or short-circuited, the auxiliary power supply module, the first resistor R1, the first diode D1, the load and a circuit of a photodiode of the photoelectric coupler IC1 divide voltage, at the moment, because the load presents smaller resistance, the control end voltage of the second switching tube Q2 is insufficient and is turned off, the third switching tube Q3 is further turned off, the detection circuit is not switched on, the load detection signal cannot be obtained, the relay RL1 does not work, and the socket is not electrified to obtain overload or short-circuit protection.
So set up, can effectively promote the security performance of socket.
According to some embodiments of the present invention, the second wire connection part includes a second connection unit CN2, the second connection unit CN2 is provided with a first connection end, a second connection end, and a third connection end, the first connection end and the second connection end are arranged in parallel and connected with the neutral wire, and the third connection end is connected between the fifth resistor R5 and a connection line of the anode of the photocoupler IC 1.
According to some embodiments of the present invention, the second wire connection part includes a second connection unit CN2 and a third connection unit CN3, the second connection unit CN2 is connected to the neutral line, one end of the third connection unit CN3 is connected to a ground, and the other end of the third connection unit CN3 is connected between the fifth resistor R5 and a connection line of the anode of the photo-coupler IC 1.
According to some embodiments of the present invention, the second connection unit CN2 is provided with a first connection end and a second connection end, which are arranged in parallel and connected with the neutral wire.
According to some embodiments of the present invention, the third connection unit CN3 is provided with a first connection terminal, a second connection terminal, and a third connection terminal, the first connection terminal and the second connection terminal are arranged in parallel and connected with the ground, and the third connection terminal is connected between the fifth resistor R5 and the connection line of the anode of the photocoupler IC 1.
According to some embodiments of the invention, a seventh resistor R7 is also connected in series between the sixth resistor R6 and the third diode D3.
According to some embodiments of the present invention, the second switch tube Q2 and the fourth switch tube Q4 are NMOS tubes or N-type transistors.
According to some embodiments of the present invention, the third switching transistor Q3 is a PMOS transistor or a P-type transistor.
According to some embodiments of the present invention, the auxiliary power module outputs a first power VCC1, a second power VCC2, and a third power VCC3, respectively.
A socket according to an embodiment of the second aspect of the present invention comprises the socket circuit described above.
The socket according to the embodiment of the invention has at least the following beneficial effects: since the socket adopts the above-mentioned socket circuit, the live input is connected to the input terminal of the relay RL1, and the normally open output of the relay RL1 is connected to the first wire connection CN 1. The zero line is connected to the second wire connecting part, the second wire connecting part is further connected to the anode of the diode at the input end of the photoelectric coupler IC1, the cathode is grounded, the fifth resistor R5 is connected with the input end of the photoelectric coupler IC1 in parallel and provides bias voltage, the cathode of the photoelectric coupler IC1 is connected with the sixth resistor R6 which is a current-limiting resistor, the sixth resistor R6 is connected with the anode of the third diode D3 in series, and the cathode of the third diode D3 is connected with the input live wire. The photoelectric coupler IC1 outputs collector voltage of the transistor, the emitter and the load sample the fourth resistor R4, the load detection output signal is connected to the emitter of the photoelectric coupler IC1, and the load detection output signal drives the fourth switch tube Q4. The voltage is connected with the input end of a third switching tube Q3, the output end of the third switching tube Q3 is connected with a third resistor R3, the third resistor R3 is connected with the anode of a second diode D2, the cathode of the second diode D2 is connected with the normally open output of a relay RL1, the second resistor R2 is a bias resistor of the control end and the input end of the third switching tube Q3, and the control end of the third switching tube Q3 is connected with the input end of the second switching tube Q2. The output end of the first resistor R1 is connected to the anode of an isolation diode first diode D1, the cathode of the first diode D1 is connected to the normally-open output end of the relay RL1, and the output end of the first resistor R1 is further connected to the control end of the second switch tube Q2. The socket switch signal is connected to the control end of the fourth switch tube Q4, the input end of the fourth switch tube Q4 is grounded, and the input end of the fourth switch tube Q4 is connected with the coil of the relay.
When the circuit is connected with electricity normally, namely the live wire and the zero wire are connected, the auxiliary power supply module outputs auxiliary voltage, if no load is inserted into the socket hole, namely the first wire connecting part CN1 and the second wire connecting part are not connected with the load, the load detection circuit comprises the auxiliary power supply module, the third switching tube Q3, the third resistor R3, the second diode D2, the first wire connecting part CN1, the second wire connecting part, the photoelectric coupler IC1 and the fourth resistor R4, because the first wire connecting part CN1 and the second wire connecting part are open-circuited, the photoelectric coupler IC1 has no current, the voltage of the sampling resistor R4 is zero, no load detection output signal exists at the moment, the relay RL1 controls the fourth switching tube Q4 not to be switched on, the relay RL1 does not act, the live wire is open-circuited, the socket is not powered, and even if the live wire jack is touched, the socket does not get an electric shock.
When the circuit is connected with the power supply and is normal, when a load is inserted, a socket switching signal is turned on, namely the fourth switching tube Q4 is in saturated conduction, the output end of the second switching tube Q2 is pulled down to a loop ground, if the load is not overloaded or short-circuited, the control end of the second switching tube Q2 obtains a switching-on voltage, the second switching tube Q2 is conducted, the third switching tube Q3 is conducted, the load detection loop works, the circuit performs load detection, finally, current passes through the input end of the photoelectric coupler IC1, the fourth resistor R4 detects the voltage to drive the relay to control the fourth switching tube Q4, the relay RL1 is conducted, the live wire voltage is connected to the first wire connecting part CN1, and the load supplies power. At this time, the load detection circuit auxiliary power supply module Q3, the third resistor R3 and the second diode D2 are not required to be turned off, and the load detection signal is maintained to be continuously conducted by currents generated by a loop of the zero line, the sixth resistor R6 at the input end of the photoelectric coupler IC1, the seventh resistor R7, the third diode D3 and the live wire.
If the load is overloaded or short-circuited, the auxiliary power supply module, the first resistor R1, the first diode D1, the load and a circuit of a photodiode of the photoelectric coupler IC1 divide voltage, at the moment, because the load presents smaller resistance, the control end voltage of the second switching tube Q2 is insufficient and is turned off, the third switching tube Q3 is further turned off, the detection circuit is not switched on, the load detection signal cannot be obtained, the relay RL1 does not work, and the socket is not electrified to obtain overload or short-circuit protection.
So set up, can effectively promote the security performance of socket.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a circuit diagram of a receptacle circuit according to a first embodiment of the present invention;
fig. 2 is a circuit diagram of a socket circuit according to a second embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explanation and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In a first embodiment of the present invention, a socket circuit is provided, which includes an auxiliary power module, a power control module, a switch module, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second switch Q2, a third switch Q3, a fourth switch Q4, a first diode D1, a second diode D2, a third diode D3, a relay RL1, a photocoupler IC1, a first wire connection portion CN1, and a second wire connection portion, wherein the auxiliary power module is connected to an input terminal of the third switch Q3, one end of the first resistor R1, and one end of the power control module, the other end of the first resistor R1 is connected to an anode of the first diode D1, one end of a switch of the relay 1 is connected to a live wire, the other end of the relay is connected to the first wire connection portion CN1, and an input terminal of a coil RL1 is connected to the auxiliary power module, the output end of the coil of the relay RL1 is connected with the input end of a fourth switching tube Q4, the output end of the fourth switching tube Q4 is grounded, the control end of the fourth switching tube Q4 is connected with one end of a switching module, the other end of the switching module is connected with a power supply control module, the output end of a third switching tube Q3 is connected with one end of a third resistor R3, the other end of the third resistor R3 is connected with the anode of a second diode D2, the cathode of the second diode D2 is connected between the switch of the relay RL1 and the connecting line of the first wire connecting part CN1, the control end of a third switching tube Q3 is connected with the input end of a second switching tube Q2, the output end of a second switching tube Q2 is grounded, the control end of a second switching tube Q2 is connected between the first resistor R1 and the connecting line of the anode of a first diode D1, the two ends of a second resistor R2 are respectively connected with the input end and the control end of a third switching tube Q3 and the emitter 1 of a photoelectric coupler IC, one end of a fourth resistor R4 is grounded, the other end is connected between a connection line of the power control module and an emitter of a photocoupler IC1, a collector of the photocoupler IC1 is connected with the auxiliary power module, an anode of a photodiode of the photocoupler IC1 is connected with one end of a fifth resistor R5, a cathode of the photocoupler IC1 is connected with one end of a sixth resistor R6, a connection line between a cathode of the photodiode of the photocoupler IC1 and one end of a sixth resistor R6 is also grounded, the other end of the fifth resistor R5 is connected between a cathode of the photodiode of the photocoupler IC1 and a connection line of one end of a sixth resistor R6, the other end of the sixth resistor R6 is connected with an anode of a third diode D3, a cathode of a third diode D3 is connected between a switch of a relay RL 8 and a connection line of a first wire connection portion CN1, one end of a second wire connection portion is connected with a zero line, and the other end is connected between a connection line of the fifth resistor R5 and a connection line of the anode of the photocoupler IC 1.
The live input is connected to the input of relay RL1, and the normally open output of relay RL1 is connected to first wire connection CN 1. The zero line is connected to the second wire connecting part, the second wire connecting part is further connected to the anode of the diode at the input end of the photoelectric coupler IC1, the cathode is grounded, the fifth resistor R5 is connected with the input end of the photoelectric coupler IC1 in parallel and provides bias voltage, the cathode of the photoelectric coupler IC1 is connected with the sixth resistor R6 which is a current-limiting resistor, the sixth resistor R6 is connected with the anode of the third diode D3 in series, and the cathode of the third diode D3 is connected with the input live wire. The photoelectric coupler IC1 outputs collector voltage of the transistor, the emitter and the load sample the fourth resistor R4, the load detection output signal is connected to the emitter of the photoelectric coupler IC1, and the load detection output signal drives the fourth switch tube Q4. The voltage is connected with the input end of a third switching tube Q3, the output end of the third switching tube Q3 is connected with a third resistor R3, the third resistor R3 is connected with the anode of a second diode D2, the cathode of the second diode D2 is connected with the normally open output of a relay RL1, the second resistor R2 is a bias resistor of the control end and the input end of the third switching tube Q3, and the control end of the third switching tube Q3 is connected with the input end of the second switching tube Q2. The output end of the first resistor R1 is connected to the anode of an isolation diode first diode D1, the cathode of the first diode D1 is connected to the normally-open output end of the relay RL1, and the output end of the first resistor R1 is further connected to the control end of the second switch tube Q2. The socket switch signal is connected to the control end of the fourth switch tube Q4, the input end of the fourth switch tube Q4 is grounded, and the input end of the fourth switch tube Q4 is connected with the coil of the relay. In addition, the switch module may be provided with a touch switch, and only when a touch signal is input, the power control module may output a socket switch output signal to the fourth switching tube Q4 through the switch module.
Referring to fig. 1, in some embodiments of the present invention, the second wire connection part includes a second connection unit CN2, the second connection unit CN2 is provided with a first connection terminal, a second connection terminal, and a third connection terminal, the first connection terminal and the second connection terminal are arranged in parallel and connected to a neutral line, and the third connection terminal is connected between the fifth resistor R5 and a connection line of an anode of the photocoupler IC 1. In this way, it is possible to adapt to a two-hole socket, i.e. a socket without a ground connection.
At this time, when the circuit is connected to a normal power, that is, a live wire, the zero line is connected, the auxiliary power module starts to operate, if no load is inserted into the socket hole, the load detection loop auxiliary power module, the third switching tube Q3, the third resistor R3, the second diode D2, the first wire connection portion CN1, the second connection unit CN2, the photocoupler IC1, and the fourth resistor R4 are open-circuited by the first wire connection portion CN1 and the second connection unit CN2, so that the photocoupler IC1 has no current, the voltage of the sampling resistor R4 is zero, at this time, no load detection output signal exists, the power control module does not output voltage, the switch module does not work, the socket switch output signal is at a low level, the relay RL1 controls the fourth switching tube Q4 not to be turned on, the relay RL1 does not operate, the live wire is open-circuited, the socket is not powered, and the socket does not get an electric shock even if.
When the circuit is connected with the power supply normally, when a load is inserted, if the load is not overloaded or short-circuited, the control end of the second switch tube Q2 obtains a switching-on voltage, the second switch tube Q2 is conducted, the load detection loop works, the circuit performs load detection, finally, current passes through the input end of the photoelectric coupler IC1, the fourth resistor R4 detects the voltage to drive the power supply control module, the voltage is output to the switch module, the switch module works and outputs a high-level socket switch signal to drive the relay to control the fourth switch tube Q4, the relay RL1 is conducted, the live wire voltage is connected to a live wire jack (a first wire connecting part CN1), and the load supplies power. At this time, the load detection signal is kept continuously conducted by currents generated by the zero line, the input end of the photoelectric coupler IC1, the sixth resistor R6, the seventh resistor R7, the third diode D3 and the live wire.
If the load is overloaded or short-circuited, the auxiliary power supply module, the first resistor R1, the first diode D1, the load and a circuit of a photodiode of the photoelectric coupler IC1 divide voltage, at the moment, because the load presents smaller resistance, the control end voltage of the second switch tube Q2 is not enough and is turned off, the third switch tube Q3 is further turned off, the detection circuit is not switched on, the load detection signal cannot be obtained, the power supply control module is not in voltage output, the switch module does not work, the output signal of the socket switch is in a low level, the relay RL1 does not work, and the socket is not in power, so that overload or short-circuit protection is obtained.
Referring to fig. 2, in some embodiments of the present invention, the second wire connection part includes a second connection unit CN2 and a third connection unit CN3, the second connection unit CN2 is connected to a neutral line, one end of the third connection unit CN3 is connected to a ground line, and the other end of the third connection unit CN3 is connected between a fifth resistor R5 and a connection line of an anode of a photo coupler IC 1. The second connection unit CN2 is provided with a first connection end and a second connection end, which are arranged in parallel and connected with the neutral wire. The third connection unit CN3 is provided with a first connection end, a second connection end and a third connection end, the first connection end and the second connection end are arranged in parallel and connected with the ground wire, and the third connection end is connected between the fifth resistor R5 and the connection line of the anode of the photoelectric coupler IC 1. In this way, it is possible to adapt to a three-jack socket, i.e. a socket provided with a connecting ground.
At this time, when the circuit is connected and is electrically normal, that is, the live wire, the zero wire and the ground wire are connected, the auxiliary power module operates, if no load is inserted into the socket hole, that is, the first wire connecting portion CN1, the second connecting unit CN2 and the third connecting unit CN3, the load detection circuit auxiliary power module, the third switching tube Q3, the third resistor R3, the second diode D2, the first wire connecting portion CN1, the second connecting unit CN2, the third connecting unit CN3, the photocoupler IC1 and the fourth resistor R4, since the first wire connecting portion CN1, the second connecting unit CN 6385 and the third connecting unit CN3 are open, the photocoupler IC1 has no current, the sampling resistor fourth resistor R4 is zero, at this time, no load detection output signal is generated, the power control module outputs the voltage, the switching module does not operate, the socket switching output signal is low level, the fourth switching tube Q4 is not turned on, the RL1 does not operate, the live wire is opened, the socket is not electrified, and even if the live wire jack is touched at the moment, the socket cannot get an electric shock.
When the circuit is normal in power connection and electricity is inserted with a load, if the ground wire is poor, the CN3 of the load detection circuit is open and does not work, no load detection output signal exists at the moment, the power control module does not have voltage output, the switch module does not work, the output signal of the socket switch is low level, the fourth switch tube Q4 is not switched on, the socket does not have electricity output, ground wire detection and protection are realized, and the safety of electric equipment is improved. If the live wire this moment, zero line and ground connection are normal, the load does not have overload or short circuit, then second switch tube Q2 control end obtains turn-on voltage and second switch tube Q2 switches on, load detection return circuit work, the circuit carries out load detection, there is the electric current to pass through at final photoelectric coupler IC 1's input, fourth resistance R4 detected voltage removes drive power control module, voltage output gives switch module, switch module work and output high level's socket switching signal remove drive relay control fourth switch tube Q4, relay RL1 switches on, live wire voltage is connected to the live wire jack, the load power supply. At the moment, the load detection signal is kept to be continuously conducted by currents generated by a zero line, a ground line, an input end of a photoelectric coupler IC1, a sixth resistor R6, a seventh resistor R7, a third diode D3 and a live line. If the ground wire is poor after the load supplies power, the load detection loop is opened and the load signal cannot be detected, the relay RL1 is switched off, no voltage is output, the dynamic ground wire detection and protection of the power supply are realized, and the safety of the electric equipment is improved.
If the load is overloaded or short-circuited, the auxiliary power supply module, the first resistor R1, the first diode D1, the load and a circuit of a photodiode of the photoelectric coupler IC1 divide voltage, at the moment, because the load presents smaller resistance, the control end voltage of the second switching tube Q2 is insufficient and is turned off, the third switching tube Q3 is further turned off, the detection circuit is not switched on, the load detection signal cannot be obtained, the relay RL1 does not work, and the socket is not electrified to obtain overload or short-circuit protection.
In some embodiments of the present invention, a seventh resistor R7 is further connected in series between the sixth resistor R6 and the third diode D3, so as to increase the current limiting and voltage dividing effects of the circuit.
In some embodiments of the present invention, the second switch transistor Q2 and the fourth switch transistor Q4 are NMOS transistors or N-type transistors. The third switching tube Q3 is a PMOS tube or a P-type triode. The auxiliary power module respectively outputs a first power VCC1, a second power VCC2, and a third power VCC3, and the first power VCC1, the second power VCC2, and the third power VCC3 may output the same or different voltages.
In some embodiments of the present invention, the number of the connection terminals of the wire connection portion is not limited to the above number, and the number may be increased to improve the communication characteristic.
Embodiments of the second aspect of the present invention also provide a socket, which includes the socket circuit described above.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A receptacle circuit, comprising: an auxiliary power module, a power control module, a switch module, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second switch Q2, a third switch Q3, a fourth switch Q4, a first diode D1, a second diode D2, a third diode D3, a relay RL1, a photocoupler IC1, a first wire connecting portion CN1, a second wire connecting portion, wherein the auxiliary power module is respectively connected with an input end of the third switch Q3, one end of the first resistor R1, and one end of the power control module, the other end of the first resistor R1 is connected with an anode 1 8 of the first diode D1, one end of a switch of the relay RL 2 is connected with a live wire, the other end of the relay RL 2 is connected with the first wire connecting portion CN1, and an input end of a coil 1 of the relay RL 4 is connected with the auxiliary power module, an output end of a coil of the relay RL1 is connected with an input end of a fourth switching tube Q4, an output end of the fourth switching tube Q4 is grounded, a control end of the fourth switching tube Q4 is connected with one end of the switch module, the other end of the switch module is connected with the power supply control module, an output end of the third switching tube Q3 is connected with one end of a third resistor R3, the other end of the third resistor R3 is connected with an anode of a second diode D2, a cathode of the second diode D2 is connected between a switch of the relay RL1 and a connection line of the first wire connecting portion CN1, a control end of the third switching tube Q3 is connected with an input end of the second switching tube Q2, an output end of the second switching tube Q2 is grounded, a control end of the second switching tube Q2 is connected between a connection line of the first resistor R1 and an anode of the first diode D1, two ends of the second resistor R2 are respectively connected to the input end and the control end of the third switching tube Q3, the power control module is further connected to the emitter of the photocoupler IC1, one end of the fourth resistor R4 is grounded, the other end is connected between the power control module and the connection line of the emitter of the photocoupler IC1, the collector of the photocoupler IC1 is connected to the auxiliary power module, the anode of the photocoupler IC1 is connected to one end of the fifth resistor R5, the cathode of the photocoupler IC1 is connected to one end of the sixth resistor R6, the cathode of the photocoupler IC1 is further grounded to the connection line of one end of the sixth resistor R6, the other end of the fifth resistor R5 is connected between the cathode of the photocoupler IC1 and the connection line of one end of the sixth resistor R6, and the other end of the sixth resistor R6 is connected to the anode of the third diode D3, a cathode of the third diode D3 is connected between the switch of the relay RL1 and the connection line of the first wire connection portion CN1, one end of the second wire connection portion is connected to a zero line, and the other end is connected between the fifth resistor R5 and the connection line of the anode of the photocoupler IC 1.
2. The receptacle circuit of claim 1, wherein: the second wire connecting part comprises a second connecting unit CN2, the second connecting unit CN2 is provided with a first connecting end, a second connecting end and a third connecting end, the first connecting end and the second connecting end are arranged in parallel and are connected with the zero line, and the third connecting end is connected between the fifth resistor R5 and a connecting wire of the anode of the photoelectric coupler IC 1.
3. The receptacle circuit of claim 1, wherein: the second wire connecting portion includes a second connecting unit CN2 and a third connecting unit CN3, the second connecting unit CN2 is connected to the neutral line, one end of the third connecting unit CN3 is connected to a ground line, and the other end of the third connecting unit CN3 is connected between the fifth resistor R5 and a connecting line of the anode of the photocoupler IC 1.
4. The receptacle circuit of claim 3, wherein: the second connection unit CN2 is provided with a first connection end and a second connection end, and the first connection end and the second connection end are arranged in parallel and connected with the zero line.
5. The receptacle circuit of claim 3, wherein: the third connection unit CN3 is provided with a first connection end, a second connection end and a third connection end, the first connection end and the second connection end are connected in parallel and connected to the ground wire, and the third connection end is connected between the fifth resistor R5 and the connection line of the anode of the photoelectric coupler IC 1.
6. The receptacle circuit of claim 1, wherein: a seventh resistor R7 is also connected in series between the sixth resistor R6 and the third diode D3.
7. The receptacle circuit of claim 1, wherein: the second switch tube Q2 and the fourth switch tube Q4 are NMOS tubes or N-type triodes.
8. The receptacle circuit of claim 1, wherein: the third switching tube Q3 is a PMOS tube or a P-type triode.
9. The receptacle circuit of claim 1, wherein: the auxiliary power supply module outputs a first power supply VCC1, a second power supply VCC2, and a third power supply VCC3, respectively.
10. A socket, characterized in that: comprising the socket circuit of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010655201.0A CN111799608A (en) | 2020-07-09 | 2020-07-09 | Socket circuit and socket with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010655201.0A CN111799608A (en) | 2020-07-09 | 2020-07-09 | Socket circuit and socket with same |
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| Publication Number | Publication Date |
|---|---|
| CN111799608A true CN111799608A (en) | 2020-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010655201.0A Pending CN111799608A (en) | 2020-07-09 | 2020-07-09 | Socket circuit and socket with same |
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| CN (1) | CN111799608A (en) |
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| US20030189453A1 (en) * | 2000-02-09 | 2003-10-09 | Smith Marlin C. | Radio frequency clamping circuit |
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| CN108134273A (en) * | 2017-12-08 | 2018-06-08 | 刘冰冰 | The safety electric outlet circuit of low pressure detection control |
| CN208862296U (en) * | 2018-11-02 | 2019-05-14 | 南京信息工程大学 | A kind of insertion seat board |
| CN110514932A (en) * | 2019-08-30 | 2019-11-29 | 广州市帝能云科技有限公司 | A kind of load detection circuit for access |
| CN212412352U (en) * | 2020-07-09 | 2021-01-26 | 东莞市贝恩电子科技有限公司 | Socket circuit and socket with same |
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2020
- 2020-07-09 CN CN202010655201.0A patent/CN111799608A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030189453A1 (en) * | 2000-02-09 | 2003-10-09 | Smith Marlin C. | Radio frequency clamping circuit |
| CN105047477A (en) * | 2015-06-15 | 2015-11-11 | 成都广迈科技有限公司 | Relay energy-saving control circuit |
| CN205985616U (en) * | 2016-08-30 | 2017-02-22 | 郑州春泉节能股份有限公司 | Socket safety device based on infrared triggering is detected with optocoupler output |
| CN108134273A (en) * | 2017-12-08 | 2018-06-08 | 刘冰冰 | The safety electric outlet circuit of low pressure detection control |
| CN208862296U (en) * | 2018-11-02 | 2019-05-14 | 南京信息工程大学 | A kind of insertion seat board |
| CN110514932A (en) * | 2019-08-30 | 2019-11-29 | 广州市帝能云科技有限公司 | A kind of load detection circuit for access |
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