CN218602862U - Power conversion socket without touch sensing - Google Patents
Power conversion socket without touch sensing Download PDFInfo
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- CN218602862U CN218602862U CN202222483235.3U CN202222483235U CN218602862U CN 218602862 U CN218602862 U CN 218602862U CN 202222483235 U CN202222483235 U CN 202222483235U CN 218602862 U CN218602862 U CN 218602862U
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Abstract
The utility model relates to a contactless inductive power conversion socket, which comprises an input power plug, an output power plug, a current transformer sampling circuit, a microprocessor and a zero-live line switching circuit, wherein the current transformer sampling circuit is electrically connected with the microprocessor; the zero live wire switching circuit comprises optocouplers U1, U2, U3 and U4, bidirectional thyristors BT1, BT2, BT3 and BT4, wherein the output end of the optocoupler is electrically connected with the control end of the bidirectional thyristor; two input/output ends of the bidirectional thyristor BT1 are respectively and electrically connected with a live wire of an input power plug and a first end of an output power socket, two input/output ends of the bidirectional thyristor BT2 are respectively and electrically connected with a zero wire of the input power plug and a first end of the output power socket, two input/output ends of the bidirectional thyristor BT3 are respectively and electrically connected with a live wire of the input power plug and a second end of the output power socket, and two input/output ends of the bidirectional thyristor BT4 are respectively and electrically connected with a zero wire of the input power plug and a second end of the output power socket.
Description
Technical Field
The utility model relates to the technical field of switches, in particular to contactless inductive power conversion socket.
Background
The traditional distribution boxes in families and offices are usually only provided with the leakage protection switch at a main distribution box, and the leakage protection switch is not arranged at a power receiving end, so that once an electric shock accident occurs, the main leakage protection switch can trip, a main power supply is disconnected, and the power can be supplied again by manually resetting the leakage protection switch until the leakage or electric shock fault is eliminated.
However, as the living standard of people increases, the used electronic products and the power supply lines become more and more complex, and the possibility of electric shock and electric leakage accidents is greatly increased, so that the prior art provides a leakage point protection socket to avoid the problem of complete power failure during electric leakage.
However, the existing leakage protection socket has the principle that after leakage current is detected, a magnetic latching relay is started, the threshold value of protection current is large, the reaction speed is low, partial areas can still be powered off collectively, the pain of electric shock is strong, and electric shock persons can generate fear to electricity.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a contactless inductance knows power conversion socket, it has faster reaction rate.
Therefore, the contactless inductive power conversion socket comprises an input power plug, an output power plug, a current transformer sampling circuit, a microprocessor and a zero-live line switching circuit, wherein the current transformer sampling circuit is electrically connected with the microprocessor;
the zero-live line switching circuit comprises an optocoupler U1, an optocoupler U2, an optocoupler U3, an optocoupler U4, a bidirectional thyristor BT1, a bidirectional thyristor BT2, a bidirectional thyristor BT3 and a bidirectional thyristor BT4, wherein the output end of the optocoupler U1 is electrically connected with the control end of the bidirectional thyristor BT1, the output end of the optocoupler U2 is electrically connected with the control end of the bidirectional thyristor BT2, the output end of the optocoupler U3 is electrically connected with the control end of the bidirectional thyristor BT3, the output end of the optocoupler U4 is electrically connected with the control end of the bidirectional thyristor BT4, and the input ends of the optocoupler U1, the optocoupler U2, the optocoupler U3 and the optocoupler U4 are electrically connected with a microprocessor;
two input/output ends of the bidirectional thyristor BT1 are respectively and electrically connected with a live wire of an input power plug and a first end of an output power socket, two input/output ends of the bidirectional thyristor BT2 are respectively and electrically connected with a zero wire of the input power plug and a first end of the output power socket, two input/output ends of the bidirectional thyristor BT3 are respectively and electrically connected with a live wire of the input power plug and a second end of the output power socket, and two input/output ends of the bidirectional thyristor BT4 are respectively and electrically connected with a zero wire of the input power plug and a second end of the output power socket.
The driving circuit comprises a triode Q1, a triode Q2, an indicator light LED1 and an indicator light LED2, wherein the base electrodes of the triode Q1 and the triode Q2 are respectively and electrically connected with the microprocessor, the output ends of the triode Q1 and the triode Q2 are grounded, and the input ends of the triode Q1 and the triode Q2 are electrically connected with a control power supply of the conversion socket;
the input ends of the triode Q1 and the triode Q2 are respectively used as a first output end and a second output end of the driving circuit, or the output ends of the triode Q1 and the triode Q2 are respectively used as a first output end and a second output end of the driving circuit;
the input of opto-coupler U1 and opto-coupler U4 is anodal for drive circuit's first output electricity connection, and opto-coupler U1 and opto-coupler U4's input negative pole is connected to drive circuit's second output electricity, and opto-coupler U2 and opto-coupler U3's input is anodal for drive circuit's second output electricity connection, and opto-coupler U2 and opto-coupler U3's input negative pole is connected to drive circuit's first output electricity.
Further, drive circuit still includes pilot lamp LED1 and pilot lamp LED2, triode Q1's input is through pilot lamp LED1 electricity connection control power or triode Q1's output through pilot lamp LED1 ground connection, triode Q2's input is through pilot lamp LED2 electricity connection control power or triode Q2's output through pilot lamp LED1 ground connection.
Further, the voltage reducing circuit comprises an RC (resistance-capacitance) voltage reducing circuit, the RC voltage reducing circuit comprises a capacitor C8, a resistor R13, a voltage stabilizing tube Z1, a capacitor C5 and a capacitor C6, a live wire is electrically connected with the output end of the RC voltage reducing circuit through the capacitor C8, the resistor R13 is connected with the capacitor C8 in parallel to form the RC voltage reducing circuit, the cathode of the voltage stabilizing tube Z1 is electrically connected with the output end of the RC voltage reducing circuit, the anode of the voltage stabilizing tube Z1 is grounded, one ends of the capacitor C5 and the capacitor C6 are electrically connected with the output end of the RC voltage reducing circuit, the other end of the capacitor C5 and the capacitor C6 are grounded, and the output end of the RC voltage reducing circuit serves as a control power supply.
Furthermore, the lithium battery and power management circuit comprises a lithium battery and a power management chip, wherein the power management chip is electrically connected with the control power supply and is electrically connected with the microprocessor and the lithium battery.
Further, still include ground connection enable switch, ground connection enable switch includes electric capacity C3, protection diode, opto-coupler U5 and bidirectional triode thyristor BT5, and electric capacity C3 both ends are connected the ground wire of live wire and input power plug respectively electrically, and the positive pole electricity of protection diode is connected the ground wire, and the cathode electricity is connected the live wire, and the live wire is connected to opto-coupler U5's the anodal electricity in input, negative pole electricity connection ground wire, bidirectional triode thyristor's control end is connected to the output electricity, and bidirectional triode thyristor's input/output end establishes ties on the live wire, input power plug is through ground connection enable switch incoming telegram connection zero live wire switching circuit, output power plug's third end electricity is connected the ground wire.
Further, still include the input nature and flow over voltage protection circuit, the input nature flows over voltage protection circuit and includes fuse BX1, two-way clamp diode TVS1 and negative temperature coefficient resistance NTC, fuse BX1 and negative temperature coefficient resistance NTC establish ties on the live wire that inserts, and zero line and live wire are connected to two-way clamp diode TVS1 both ends electricity respectively, input power plug is through the input nature and flow over voltage protection circuit incoming telegram connection ground connection enable switch.
Further, the fuse BX1 is specifically a self-healing fuse.
Further, the device also comprises a key test circuit, wherein the key test circuit comprises a switch K1, one end of the switch K1 is electrically connected with a live wire behind the grounding enabling switch, and the other end of the switch K1 is electrically connected with a ground wire.
Further, the current transformer sampling circuit comprises a mutual inductor L1, a current limiting resistor R22, an adjustable resistor R23 and an amplitude limiting voltage stabilizing diode Z2, wherein the mutual inductor L1 surrounds a zero line and a live line, the output end of the mutual inductor L1 is grounded through the current limiting resistor R22 and the adjustable resistor R23, the cathode of the amplitude limiting voltage stabilizing diode Z2 is electrically connected between the current limiting resistor R22 and the adjustable resistor R23, the anode of the amplitude limiting voltage stabilizing diode Z2 is grounded, and the microprocessor is electrically connected with a node between the current limiting resistor R22 and the adjustable resistor R23.
Has the beneficial effects that: a microprocessor of the power conversion socket without touch inductor receives a leakage signal, and switches a zero line and a live line through a zero line and live line switching circuit.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the contents of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following description will particularly refer to specific embodiments of the present invention.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic diagram of a unit module of a contactless inductive power conversion socket according to the present invention;
fig. 2 is a schematic circuit diagram of a contactless inductive power conversion socket according to the present invention;
fig. 3 shows a schematic circuit diagram of the input over-current and over-voltage protection circuit of the present invention;
fig. 4 shows a schematic circuit diagram of the sampling circuit of the current transformer of the present invention;
fig. 5 shows a circuit schematic of the ground enable switch of the present invention;
fig. 6 shows a schematic circuit diagram of the rc step-down circuit of the present invention;
fig. 7 shows a schematic circuit diagram of a lithium battery and a power management circuit of the present invention;
fig. 8 shows a circuit schematic of the drive circuit of the present invention;
fig. 9 shows a circuit schematic diagram of the zero-live line switching circuit of the present invention;
fig. 10 shows a circuit schematic diagram of the key test circuit of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1-2, a contactless inductive power conversion socket of the present embodiment includes an input power plug, an input overcurrent and overvoltage protection circuit, a current transformer sampling circuit, a ground enable switch, a resistance-capacitance voltage reduction circuit, a driving circuit, a key test circuit, a lithium battery and power management circuit, a microprocessor, a zero-live line switching circuit, and an output power socket.
Wherein, input power plug is used for being connected with zero line, live wire and the ground wire of outside electric wire netting respectively electricity, and ground connection enable switch is connected with input power plug's ground wire electricity, input power plug is in proper order through flowing through voltage protection circuit, ground connection enable switch and zero live wire switching circuit electricity and connecting output supply socket, resistance-capacitance step-down circuit electricity is connected the live wire that ground connection enable switch in order to get the electricity to electricity lithium cell and power management circuit are in order to be its power supply, and microprocessor connects zero live wire switching circuit through the drive circuit electricity, and microprocessor electricity connection current transformer gets sampling circuit and lithium cell and power management circuit.
Referring to fig. 3, the input overcurrent and overvoltage protection circuit includes a fuse BX1, a bidirectional clamping diode TVS1 and a negative temperature coefficient resistor NTC, wherein the fuse BX1 and the negative temperature coefficient resistor NTC are connected in series to an accessed live wire, two ends of the bidirectional clamping diode TVS1 are respectively electrically connected to a neutral wire and a live wire,
in this embodiment, the fuse BX1 is a self-recovery fuse, when the current is greater than the rated current, the fuse generates heat, the resistance value increases rapidly, the loop resistance increases greatly, the current decreases until it approaches zero, at this time, the fuse temperature is normal, and if the fault is cleared, the fuse resistance recovers to normal, the overvoltage protection device employs a bidirectional clamping diode, which has the advantages of large current capacity, small volume, and fast response speed compared to a varistor, and the negative temperature coefficient resistor NTC is used for suppressing the instantaneous large current during starting, thereby better protecting the electronic switch.
Referring to fig. 4, the current transformer sampling circuit comprises a mutual inductor L1, a current limiting resistor R22, an adjustable resistor R23 and a limiting voltage stabilizing diode Z2, wherein the mutual inductor L1 surrounds a zero line and a live line, the output end of the mutual inductor L1 is grounded through the current limiting resistor R22 and the adjustable resistor R23, the cathode of the limiting voltage stabilizing diode Z2 is electrically connected between the current limiting resistor R22 and the adjustable resistor R23, the anode of the limiting voltage stabilizing diode Z is grounded, and the microprocessor is electrically connected between the current limiting resistor R22 and the adjustable resistor R23.
The working principle is that the mutual inductance coil L1 adopts the same direction to wind a plurality of turns on L/N two lines. The number of turns depends on the material of the magnetic core and the sensitivity requirement. Under the condition of no electric shock, the current size through L/N is the same, the directions are opposite, mutual inductor L1 outputs 0V signal, when the electric shock event happens, the current is unequal through L/N, mutual inductor L1 outputs a signal with certain amplitude, different from the traditional leakage switch mutual inductor, because the product adopts a microprocessor to process the signal, therefore, the dynamic range of the input signal is wider, the number of turns of the mutual inductor can be less, adjustable resistor R23 is used for adjusting the sensitivity, amplitude limiting voltage stabilizing diode Z2 is used for preventing the induction voltage from damaging the port of the microprocessor too high.
See fig. 5, the ground connection enabling switch includes electric capacity C3, protection diode, opto-coupler U5 and bidirectional thyristor BT5, wherein, electric capacity C3 both ends are connected live wire and ground wire respectively, and the positive pole electricity of protection diode is connected the ground wire, and the negative pole electricity is connected the live wire, and the live wire is connected to the anodal electricity of input of opto-coupler U5, and negative pole electricity is connected the ground wire, and bidirectional thyristor's control end is connected to the output electricity, and bidirectional thyristor's input/output end is established ties on the live wire.
The opto-coupler U5 is connected in series between the live wire and the ground, and when the opto-coupler U5 is connected to the ground, the bidirectional thyristor BT5 is connected to the ground correspondingly. When not earthing, no electric current passes through between live wire and the ground wire, and the opto-coupler does not have the output, and the bidirectional thyristor is the off-state, and when earthing enabling switch did not connect with the ground wire electricity promptly, when detecting not having the ground wire, the bidirectional thyristor was not to back output voltage, and electric capacity C3 is used for the burden half week, maintains opto-coupler U5 and continues to switch on, and the protection diode then is used for protecting the opto-coupler not by reverse breakdown.
Referring to fig. 6, the RC resistance-capacitance voltage reduction circuit includes a capacitor C8, a resistor R13, a resistor R14, a voltage regulator tube Z1, a capacitor C5 and a capacitor C6, wherein a live wire is electrically connected with an output end of the RC resistance-capacitance voltage reduction circuit through the capacitor C8 and the resistor R14, the resistor R13 is connected in parallel with the capacitor C8 to form the RC resistance-capacitance voltage reduction circuit, so as to supply power to a rear lithium battery and a power management circuit, a cathode of the voltage regulator tube Z1 is electrically connected with an output end of the RC resistance-capacitance voltage reduction circuit, an anode of the voltage regulator tube Z1 is grounded, specifically, the voltage regulator tube is 5.1V, one end of the capacitor C5 and one end of the capacitor C6 are electrically connected with the output end of the RC resistance-capacitance voltage reduction circuit, and the other end of the capacitor C5 and the capacitor C6 are grounded, so as to filter output.
Referring to fig. 7, the lithium battery and power management circuit includes a lithium battery and a power management chip, wherein the power management chip is electrically connected to the output terminal of the RC resistance-capacitance voltage-reducing circuit and to the microprocessor, and charges the lithium battery and supplies power to the microprocessor after taking power from the RC resistance-capacitance voltage-reducing circuit.
See fig. 8, the driving circuit includes triode Q1, triode Q2, pilot lamp LED1 and pilot lamp LED2, wherein, the base of triode Q1 and triode Q2 is connected with microprocessor electricity respectively, the projecting pole is ground, the collecting electrode of triode Q1 is connected with the negative pole electricity of pilot lamp LED1 through current-limiting resistor R18, the collecting electrode of triode Q1 is as driving circuit's first output, the collecting electrode of triode Q2 is connected with pilot lamp LED 2's negative pole electricity through current-limiting resistor R20, the collecting electrode of triode Q2 is as driving circuit's second output, pilot lamp LED1 and pilot lamp LED 2's positive pole all is connected with RC resistance-capacitance voltage reduction circuit's output electricity.
Wherein pilot lamp LED1 and pilot lamp LED2 are used for instructing the zero live wire to switch in order to remind relevant personnel, and it also can replace or connect buzzer in series in order to remind relevant personnel.
Referring to fig. 9, the zero-live line switching circuit includes an optocoupler U1, an optocoupler U2, an optocoupler U3, an optocoupler U4, a bidirectional thyristor BT1, a bidirectional thyristor BT2, a bidirectional thyristor BT3, and a bidirectional thyristor BT4, wherein an output end of the optocoupler U1 is electrically connected to a control end of the bidirectional thyristor BT1, an output end of the optocoupler U2 is electrically connected to a control end of the bidirectional thyristor BT2, an output end of the optocoupler U3 is electrically connected to a control end of the bidirectional thyristor BT3, an output end of the optocoupler U4 is electrically connected to a control end of the bidirectional thyristor BT4, input ends of the optocoupler U1 and the optocoupler U4 are electrically connected to a first output end of the driving circuit in a positive polarity manner, a negative electrode of the optocoupler U2 and an input end of the optocoupler U3 are electrically connected to a second output end of the driving circuit in a positive manner, and a negative electrode of the optocoupler U2 and the optocoupler U3 are electrically connected to a first output end of the driving circuit in a negative electrode manner;
two input and output ends of the bidirectional controllable silicon BT1 are respectively and electrically connected with a first end of a live wire and a first end of an output power socket, two input and output ends of the bidirectional controllable silicon BT2 are respectively and electrically connected with a first end of a zero wire and a first end of an output power socket, two input and output ends of the bidirectional controllable silicon BT3 are respectively and electrically connected with a second end of the live wire and a second end of the output power socket, and two input and output ends of the bidirectional controllable silicon BT4 are respectively and electrically connected with a second end of the zero wire and a second end of the output power socket.
When the electric shock current is detected, the zero-live wire is immediately switched, due to the adoption of a non-contact electronic circuit, millisecond-level switching is realized, people who get an electric shock hardly perceive and perceive the electric shock current, and most of equipment cannot work abnormally due to quick switching.
Referring to fig. 10, the key test circuit includes a switch K1, one end of the switch K1 is electrically connected to the live wire after the ground enable switch, and the other end is electrically connected to the ground wire, so as to simulate leakage for testing.
It should be finally noted that the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced with other equivalents without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. A power conversion socket without contact inductance is characterized by comprising an input power plug, an output power plug, a current transformer sampling circuit, a microprocessor and a zero-live line switching circuit, wherein the current transformer sampling circuit is electrically connected with the microprocessor;
the zero-live wire switching circuit comprises an optocoupler U1, an optocoupler U2, an optocoupler U3, an optocoupler U4, a bidirectional thyristor BT1, a bidirectional thyristor BT2, a bidirectional thyristor BT3 and a bidirectional thyristor BT4, wherein the output end of the optocoupler U1 is electrically connected with the control end of the bidirectional thyristor BT1, the output end of the optocoupler U2 is electrically connected with the control end of the bidirectional thyristor BT2, the output end of the optocoupler U3 is electrically connected with the control end of the bidirectional thyristor BT3, the output end of the optocoupler U4 is electrically connected with the control end of the bidirectional thyristor BT4, and the input ends of the optocoupler U1, the optocoupler U2, the optocoupler U3 and the optocoupler U4 are electrically connected with a microprocessor;
two input/output ends of the bidirectional thyristor BT1 are respectively and electrically connected with a live wire of an input power plug and a first end of an output power socket, two input/output ends of the bidirectional thyristor BT2 are respectively and electrically connected with a zero wire of the input power plug and a first end of the output power socket, two input/output ends of the bidirectional thyristor BT3 are respectively and electrically connected with a live wire of the input power plug and a second end of the output power socket, and two input/output ends of the bidirectional thyristor BT4 are respectively and electrically connected with a zero wire of the input power plug and a second end of the output power socket.
2. The contactless power conversion socket according to claim 1, further comprising a driving circuit, wherein the driving circuit comprises a transistor Q1, a transistor Q2, an indicator light LED1 and an indicator light LED2, wherein bases of the transistor Q1 and the transistor Q2 are respectively electrically connected to the microprocessor, outputs of the transistor Q1 and the transistor Q2 are grounded, and inputs of the transistor Q1 and the transistor Q2 are electrically connected to a control power supply of the conversion socket;
the input ends of the triode Q1 and the triode Q2 are respectively used as a first output end and a second output end of the driving circuit, or the output ends of the triode Q1 and the triode Q2 are respectively used as a first output end and a second output end of the driving circuit;
the positive input end of opto-coupler U1 and opto-coupler U4 is connected to drive circuit's first output electricity, and opto-coupler U1 and opto-coupler U4's input negative pole is connected to drive circuit's second output electricity, and opto-coupler U2 and opto-coupler U3's input is anodal, and opto-coupler U2 and opto-coupler U3's input negative pole is connected to drive circuit's second output electricity.
3. The contactless power conversion socket according to claim 2, wherein the driving circuit further comprises an indicator light LED1 and an indicator light LED2, an input terminal of the transistor Q1 is electrically connected to the control power source through the indicator light LED1 or an output terminal of the transistor Q1 is grounded through the indicator light LED1, and an input terminal of the transistor Q2 is electrically connected to the control power source through the indicator light LED2 or an output terminal of the transistor Q2 is grounded through the indicator light LED 1.
4. The contactless inductance-aware power conversion socket according to claim 2, further comprising an RC resistance-capacitance voltage-reducing circuit, wherein the RC resistance-capacitance voltage-reducing circuit comprises a capacitor C8, a resistor R13, a voltage-regulator tube Z1, a capacitor C5 and a capacitor C6, the live wire is electrically connected with the output end of the RC resistance-capacitance voltage-reducing circuit through the capacitor C8, the resistor R13 is connected in parallel with the capacitor C8 to form the RC resistance-capacitance voltage-reducing circuit, the cathode of the voltage-regulator tube Z1 is electrically connected with the output end of the RC resistance-capacitance voltage-reducing circuit, the anode of the voltage-regulator tube Z1 is grounded, one end of the capacitor C5 and one end of the capacitor C6 are electrically connected with the output end of the RC resistance-capacitance voltage-reducing circuit, the other end of the capacitor C5 and the output end of the capacitor C6 are grounded, and the output end of the RC resistance-capacitance voltage-reducing circuit serves as a control power supply.
5. The contactless power conversion socket according to claim 2, further comprising a lithium battery and power management circuit, wherein the lithium battery and power management circuit comprises a lithium battery and a power management chip, and the power management chip is electrically connected to the control power supply and electrically connected to the microprocessor and the lithium battery.
6. The power conversion socket according to claim 1, further comprising a ground enabling switch, wherein the ground enabling switch comprises a capacitor C3, a protection diode, an optocoupler U5 and a triac BT5, two ends of the capacitor C3 are electrically connected to the live wire and the ground wire of the input power plug respectively, an anode of the protection diode is electrically connected to the ground wire, a cathode of the protection diode is electrically connected to the live wire, an anode of the optocoupler U5 is electrically connected to the live wire, a cathode of the optocoupler U5 is electrically connected to the ground wire, an output end of the optocoupler U5 is electrically connected to the control end of the triac, an input end and an output end of the triac are connected in series to the live wire, the input power plug is electrically connected to the zero-live wire switching circuit via the ground enabling switch, and a third end of the output power plug is electrically connected to the ground wire.
7. The power conversion socket of claim 6, further comprising an input over-current over-voltage protection circuit, wherein the input over-current over-voltage protection circuit comprises a fuse BX1, a bidirectional clamping diode TVS1 and a negative temperature coefficient resistor NTC, the fuse BX1 and the negative temperature coefficient resistor NTC are connected in series to an incoming live wire, two ends of the bidirectional clamping diode TVS1 are electrically connected to the neutral wire and the live wire, respectively, and the input power plug is electrically connected to the ground enable switch via the input over-current over-voltage protection circuit.
8. The contactless power conversion socket according to claim 7, wherein the fuse BX1 is a self-healing fuse.
9. The contactless inductance aware power conversion socket according to claim 6, further comprising a key test circuit, wherein the key test circuit comprises a switch K1, one end of the switch K1 is electrically connected to the live wire after the ground enable switch, and the other end is electrically connected to the ground wire.
10. The contactless power conversion socket according to claim 1, wherein the current transformer sampling circuit comprises a mutual inductor L1, a current limiting resistor R22, an adjustable resistor R23 and a limiting zener diode Z2, wherein the mutual inductor L1 surrounds the neutral line and the live line, the output terminal of the mutual inductor L1 is grounded via the current limiting resistor R22 and the adjustable resistor R23, the cathode of the limiting zener diode Z2 is electrically connected between the current limiting resistor R22 and the adjustable resistor R23, and the anode of the limiting zener diode Z2 is grounded, and the microprocessor is electrically connected to a node between the current limiting resistor R22 and the adjustable resistor R23.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222483235.3U CN218602862U (en) | 2022-09-19 | 2022-09-19 | Power conversion socket without touch sensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222483235.3U CN218602862U (en) | 2022-09-19 | 2022-09-19 | Power conversion socket without touch sensing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218602862U true CN218602862U (en) | 2023-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222483235.3U Active CN218602862U (en) | 2022-09-19 | 2022-09-19 | Power conversion socket without touch sensing |
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|---|---|
| CN (1) | CN218602862U (en) |
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- 2022-09-19 CN CN202222483235.3U patent/CN218602862U/en active Active
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