Voltage stabilizing switch controller of electrical equipment
By designing a combination of power supply module, main protection module, time-delay current limiting module and input overvoltage protection module, the overvoltage protection problem of voltage regulator controller during current limiting is solved, realizing the power supply safety of electrical equipment and extending the service life of the controller.
Patent Information
- Application Number
- CN202422434581.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-09
AI Technical Summary
Existing voltage regulator controllers have low overvoltage protection during current limiting, which causes voltage surges to the switching devices and reduces the lifespan of the controller.
A voltage regulator switch controller is designed, comprising a power supply module, a main protection module, a time-delay current limiting module, an input overvoltage protection module, and a voltage regulation control module. The time-delay current limiting module performs current limiting, the input overvoltage protection module detects overvoltage and controls the voltage regulation control module to stop working when overvoltage occurs, and the main protection module disconnects the power supply to the power supply module during the current limiting period.
It improves the power supply safety of electrical equipment, prevents switching devices from being subjected to voltage surges, and extends the service life of the controller.
Smart Images
Figure CN223527770U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of voltage stabilizing switch controller, specifically a voltage stabilizing switch controller of electric appliance equipment. BACKGROUND
[0002] With the continuous development and use of electric appliance equipment, in order to improve the working safety of electric appliance equipment, generally adopt the voltage stabilizing circuit of integrated voltage stabilizer chip composition to carry out voltage stabilizing power supply processing, and in order to further improve the safety of electric appliance equipment, avoid the damage of power supply transient impact electric energy to electric appliance equipment, voltage stabilizing circuit etc., the existing voltage stabilizing switch controller carries out current limiting processing in the input end, and carries out overvoltage protection in the input end, after the disappearance of power supply anomaly, automatic recovery power supply, but during the current limiting period, overvoltage occurs, after stopping current limiting, due to the lower protectivity of controller, will lead to the switch device of voltage stabilizing switch controller to be affected by the voltage impact of increasing, reduce the service life of controller, therefore, there is room for improvement. UTILITY MODEL CONTENTS
[0003] The utility model embodiment provides a voltage stabilizing switch controller of electric appliance equipment to solve the problem in the background art.
[0004] To achieve the above object, the utility model provides the following technical scheme:
[0005] A voltage stabilizing switch controller of electric appliance equipment, comprising: power module, total protection module, delay current limiting module, input overvoltage protection module, voltage stabilizing control module and electric appliance equipment module;
[0006] The power module is used to connect AC power, carries out voltage reduction and rectifier filter processing to AC power and outputs first electric energy;
[0007] The total protection module is connected with the power module, delay current limiting module and input overvoltage protection module, is used to transmit the first electric energy to delay current limiting module, stops transmitting the first electric energy when receiving the first control signal output by delay current limiting module and receiving the second control signal output by input overvoltage protection module;
[0008] The delay current limiting module is connected with the input overvoltage protection module and voltage stabilizing control module, is used to carry out current limiting processing to the first electric energy transmitted by total protection module and output second electric energy, sets the current limiting time and outputs the first control signal during the current limiting time, stops outputting the first control signal when exceeding the current limiting time and transmits the first electric energy to input overvoltage protection module and voltage stabilizing control module;
[0009] The input overvoltage protection module is connected with the voltage stabilizing control module, and is used for detecting overvoltage of the first electric energy transmitted by the second electric energy or the delay current limiting module, and outputting a second control signal and controlling the voltage stabilizing control module to stop voltage stabilizing work when overvoltage occurs.
[0010] The voltage stabilizing control module is used for voltage stabilizing adjustment processing of the first electric energy transmitted by the second electric energy or the delay current limiting module and outputting third electric energy.
[0011] The electric appliance module is connected with the electric appliance module, and is used for receiving the third electric energy and supplying power for the connected electric appliance.
[0012] As a further scheme of the utility model: the power module includes a commercial power interface, a first transformer, a first rectifier and a first capacitor; the total protection module includes a first relay switch, a first power supply, a first relay, a first switch tube, a third diode, a fourth diode, a first logic chip and a first inverter;
[0013] Preferably, the first end and the second end of the commercial power interface are connected with the first end and the second end of the primary side of the first transformer respectively, the first end and the second end of the secondary side of the first transformer are connected with the first end and the second end of the first rectifier respectively, the third end of the first rectifier is connected with the moving end of the first relay switch and the fourth end of the first rectifier, the emitter of the first switch tube and the ground end through the first capacitor, the static end of the first relay switch is connected with the delay current limiting module, the collector of the first switch tube is connected with one end of the first relay, the other end of the first relay is connected with the first power supply, the base of the first switch tube is connected with the anode of the third diode and the Y end of the first logic chip, the B end of the first logic chip is connected with the cathode of the fourth diode and the cathode of the third diode, the A end of the first logic chip is connected with the output end of the first inverter, the input end of the first inverter is connected with the delay current limiting module, and the anode of the fourth diode is connected with the input overvoltage protection module.
[0014] As a further scheme of the utility model: the delay current limiting module includes a ninth resistor, a tenth resistor, an eleventh resistor, a fifth capacitor, a twelfth resistor, a thirteenth resistor and a second relay;
[0015] Preferably, one end of the ninth resistor is connected with the static end of the first relay switch and the other end of the second relay through the twelfth resistor, the other end of the second relay is connected with the collector of the third switch tube, the base of the third switch tube is connected with one end of the fifth capacitor, the other end of the ninth resistor and one end of the tenth resistor through the eleventh resistor, the emitter of the third switch tube is connected with the input end of the first inverter and the other end of the fifth capacitor, the other end of the tenth resistor and the ground end through the thirteenth resistor.
[0016] As a further scheme of the utility model: the time delay current limiting module further includes a first resistor, a second relay switch, a first diode and a second diode;
[0017] Preferably, the moving terminal of the second relay switch is connected with the static terminal of the first relay switch and the anode of the first diode through the first resistor, the static terminal of the second relay switch and the input overvoltage protection module, the cathode of the first diode is connected with the cathode of the second diode, and the anode of the second diode is connected with the voltage stabilizing control module.
[0018] As a further scheme of the utility model: the input overvoltage protection module includes a second resistor, a fifth diode, a third resistor, a second capacitor, a sixth diode and a first power tube;
[0019] Preferably, the cathode of the fifth diode is connected with the static terminal of the second relay switch through the second resistor, the anode of the fifth diode is connected with the anode of the fourth diode, one end of the second capacitor and the gate of the first power tube through the third resistor, the other end of the second capacitor and the cathode of the sixth diode are grounded, the anode of the sixth diode is connected with the source of the first power tube, and the drain of the first power tube is connected with the voltage stabilizing control module.
[0020] As a further scheme of the utility model: the voltage stabilizing control module includes a fourth resistor, a fourth capacitor, a second power tube, a fifth resistor, a second switch tube, a seventh diode, a sixth resistor, an eighth resistor and a third capacitor; the electric appliance module includes an electric appliance interface;
[0021] Preferably, the drain of the second power tube is connected with one end of the fourth resistor and the static terminal of the second relay switch through the fourth capacitor, the source of the second power tube, one end of the sixth resistor, one end of the seventh resistor, one end of the third capacitor and the first end of the electric appliance interface, the other end of the fourth resistor is connected with the drain of the first power tube, the anode of the second diode and the collector of the second switch tube through the fifth resistor, the gate of the second power tube, the other end of the sixth resistor and the cathode of the seventh diode are connected with the emitter of the second switch tube, the base of the second switch tube is connected with the other end of the seventh resistor through the eighth resistor, the anode of the seventh diode, the other end of the third capacitor, the second end of the electric appliance interface and the ground terminal.
[0022] Compared with the prior art, the utility model discloses the beneficial effect is: the utility model discloses the voltage stabilizing switch controller of electric equipment can be through delay current -limiting module when electrifying, the input electric energy is handled with delay current -limiting, is handled with voltage stabilizing control module and then is the voltage stabilizing adjustment of electric equipment module connection electric equipment power supply, the input electric energy is detected with input overvoltage protection module, and when overvoltage, control voltage stabilizing control module stops voltage stabilizing work, when overvoltage appears during current -limiting, will control total protection module disconnect the power supply module's power supply work directly, improve the power supply safety of voltage stabilizing switch controller of electric equipment. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced to the drawings needed to be used in the utility model embodiment, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.
[0024] Figure 1 The principle block diagram of the voltage stabilizing switch controller of the electric appliance provided for the utility model example.
[0025] Figure 2 The circuit diagram of the voltage stabilizing switch controller of the electric appliance provided for the utility model example.
[0026] Figure 3 The connection circuit diagram of the delay current -limiting module provided for the utility model example. DETAILED DESCRIPTION
[0027] The technical scheme in the utility model embodiment will be described clearly and completely in the following by combining the drawings in the utility model embodiment, obviously, the described embodiment is only a part of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creating labor belong to the protection scope of the utility model.
[0028] In one embodiment, please refer to Figure 1 A voltage stabilizing switch controller of electric appliance, comprising: power module 1, total protection module 2, delay current -limiting module 3, input overvoltage protection module 4, voltage stabilizing control module 5 and electric equipment module 6;
[0029] Specifically, the power module 1 is used to connect AC power, and the AC power is subjected to voltage reduction and rectification filtering processing and outputs first electric energy;
[0030] The total protection module 2 is connected with the power supply module 1, the delay current limiting module 3 and the input overvoltage protection module 4, and is used for transmitting the first electric energy to the delay current limiting module 3, stopping the transmission of the first electric energy when the first control signal output by the delay current limiting module 3 is received and the second control signal output by the input overvoltage protection module 4 is received.
[0031] The delay current limiting module 3 is connected with the input overvoltage protection module and the voltage stabilizing control module 5, and is used for limiting the first electric energy transmitted by the total protection module 2 and outputting the second electric energy, setting the current limiting time and outputting the first control signal during the current limiting time, stopping the output of the first control signal and transmitting the first electric energy to the input overvoltage protection module 4 and the voltage stabilizing control module 5 when the current limiting time is exceeded.
[0032] The input overvoltage protection module 4 is connected with the voltage stabilizing control module 5, and is used for detecting the overvoltage of the second electric energy or the first electric energy transmitted by the delay current limiting module 3 and outputting the second control signal and controlling the voltage stabilizing control module 5 to stop the voltage stabilizing work when the overvoltage occurs.
[0033] The voltage stabilizing control module 5 is used for stabilizing and adjusting the second electric energy or the first electric energy transmitted by the delay current limiting module 3 and outputting the third electric energy.
[0034] The electric appliance module 6 is connected with the electric appliance module 6, and is used for receiving the third electric energy and supplying power to the connected electric appliance.
[0035] In the specific embodiment, the power supply module 1 can adopt a power supply circuit composed of a power interface, a transformer, a rectifier and a capacitor, can access the alternating current electric energy and perform the voltage reduction, rectification and filtering processing on the alternating current electric energy; the total protection module 2 can adopt a total protection circuit composed of a triode, a relay, a logic chip and the like, can control the power supply state of the power supply module 1, and continuously disconnect the power supply path when the delay current limiting module 3 is in the current limiting work and the input overvoltage protection module 4 is in the overvoltage protection state; the delay current limiting module 3 can adopt a delay current limiting circuit composed of a resistor, a triode, a capacitor, a relay and the like, can set the current limiting time, and perform the current limiting processing on the input electric energy within the current limiting time; the input overvoltage protection module 4 can adopt an input overvoltage protection circuit composed of a resistor, a diode, a field effect tube and the like, can control the voltage stabilizing control module 5 to stop working when the overvoltage occurs; the voltage stabilizing control module 5 can adopt a voltage stabilizing control circuit composed of a field effect tube, a resistor, a diode, a triode and the like, can perform the voltage stabilizing and adjusting processing on the input electric energy; and the electric appliance module 6 can adopt an electric appliance circuit composed of an electric appliance interface, and supplies power to the connected electric appliance.
[0036] In another embodiment, please refer to Figure 1 , Figure 2 and Figure 3, the power module 1 includes a mains interface, a first transformer B1, a first rectifier T1 and a first capacitor C1; the total protection module 2 includes a first relay switch K1-1, a first power supply VCC1, a first relay K1, a first switch tube V1, a third diode D3, a fourth diode D4, a first logic chip J1 and a first inverter J2;
[0037] Specifically, the first end and the second end of the mains interface are connected to the first end and the second end of the primary side of the first transformer B1 respectively, the first end and the second end of the secondary side of the first transformer B1 are connected to the first end and the second end of the first rectifier T1 respectively, the third end of the first rectifier T1 is connected to the moving end of the first relay switch K1-1 and the fourth end of the first rectifier T1, the emitter of the first switch tube V1 and the ground end through the first capacitor C1, the static end of the first relay switch K1-1 is connected to the delay current limiting module 3, the collector of the first switch tube V1 is connected to one end of the first relay K1, the other end of the first relay K1 is connected to the first power supply VCC1, the base of the first switch tube V1 is connected to the anode of the third diode D3 and the Y end of the first logic chip J1, the B end of the first logic chip is connected to the cathode of the fourth diode D4 and the cathode of the third diode D3, the A end of the first logic chip J1 is connected to the output end of the first inverter J2, the input end of the first inverter J2 is connected to the delay current limiting module 3, and the anode of the fourth diode D4 is connected to the input overvoltage protection module 4.
[0038] In specific embodiments, the above-mentioned first relay switch K1-1 can be a normally closed switch, and the first relay K1 controls the first relay switch K1-1 to be disconnected by magnetic attraction; the above-mentioned first switch tube V1 can be an NPN type triode; the above-mentioned first inverter J2 can be a NOT gate chip; the above-mentioned first logic chip J1 can be an AND gate chip, which can be high level self-locking in cooperation with the third diode D3 and the fourth diode D4.
[0039] Further, the delay current limiting module 3 includes a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a fifth capacitor C5, a twelfth resistor R12, a thirteenth resistor R13 and a second relay K2;
[0040] Specifically, one end of the ninth resistor R9 is connected to the static end of the first relay switch K1-1 and the other end of the second relay K2 through the twelfth resistor R12, the other end of the second relay K2 is connected to the collector of the third switch tube, the base of the third switch tube is connected to one end of the fifth capacitor C5, the other end of the ninth resistor R9 and one end of the tenth resistor R10 through the eleventh resistor R11, and the emitter of the third switch tube is connected to the input end of the first inverter J2 and the other end of the fifth capacitor C5, the other end of the tenth resistor R10 and the ground end through the thirteenth resistor R13.
[0041] In specific embodiments, the fifth capacitor C5 can be an energy storage capacitor, which stores energy and controls the third switch tube to be turned on when the stored energy reaches the turn-on voltage of the third switch tube.
[0042] Further, the delay current limiting module 3 further comprises a first resistor R1, a second relay switch K2-1, a first diode D1 and a second diode D2.
[0043] Specifically, the moving terminal of the second relay switch K2-1 is connected to the static terminal of the first relay switch K1-1 and connected to the anode of the first diode D1, the static terminal of the second relay switch K2-1 and the input overvoltage protection module 4 through the first resistor R1, the cathode of the first diode D1 is connected to the cathode of the second diode D2, and the anode of the second diode D2 is connected to the voltage stabilizing control module 5.
[0044] In specific embodiments, the first resistor R1 performs current limiting processing; the second relay switch K2-1 can be a normally open switch, which is controlled to be closed by the second relay K2 through magnetic attraction.
[0045] Further, the input overvoltage protection module 4 comprises a second resistor R2, a fifth diode D5, a third resistor R3, a second capacitor C2, a sixth diode D6 and a first power tube Q1.
[0046] Specifically, the cathode of the fifth diode D5 is connected to the static terminal of the second relay switch K2-1 through the second resistor R2, the anode of the fifth diode D5 is connected to the anode of the fourth diode D4, one end of the second capacitor C2 and the gate of the first power tube Q1 and grounded through the third resistor R3, the other end of the second capacitor C2 and the cathode of the sixth diode D6 are both grounded, the anode of the sixth diode D6 is connected to the source of the first power tube Q1, and the drain of the first power tube Q1 is connected to the voltage stabilizing control module 5.
[0047] In specific embodiments, the second resistor R2, the fifth diode D5 and the third resistor R3 perform overvoltage detection; the first power tube Q1 can be an N-channel field effect tube.
[0048] Further, the voltage stabilizing control module 5 comprises a fourth resistor R4, a fourth capacitor C4, a second power tube Q2, a fifth resistor R5, a second switch tube V2, a seventh diode D7, a sixth resistor R6, an eighth resistor R8 and a third capacitor C3; the electric appliance module 6 comprises an electric appliance interface.
[0049] Specifically, the drain of the second power transistor Q2 is connected to one end of the fourth resistor R4 and the static terminal of the second relay switch K2-1, and the source of the second power transistor Q2, one end of the sixth resistor R6, one end of the seventh resistor, one end of the third capacitor C3 and the first terminal of the electrical equipment interface are connected through the fourth capacitor C4, the other end of the fourth resistor R4 is connected to the drain of the first power transistor Q1, the anode of the second diode D2 and the collector of the second switch transistor V2, and the gate of the second power transistor Q2 is connected through the fifth resistor R5, the emitter of the second switch transistor V2 is connected to the other end of the sixth resistor R6 and the cathode of the seventh diode D7, and the base of the second switch transistor V2 is connected to the other end of the seventh resistor and the anode of the seventh diode D7, the other end of the third capacitor C3, the second terminal of the electrical equipment interface and the ground terminal through the eighth resistor R8.
[0050] In a specific embodiment, the second power transistor Q2 can be an N-channel field effect transistor, and the second switch transistor V2 can be an NPN type transistor controlled by the seventh resistor and the eighth resistor R8 to adjust the conduction degree of the second power transistor Q2, thereby controlling the second power transistor Q2 to perform voltage regulation.
[0051] In the voltage regulation switch controller of the electrical equipment, the AC power is accessed through the power supply interface, the first transformer B1, the first rectifier T1 and the first capacitor C1 perform voltage reduction, rectification and filtering processing on the AC power, the first relay switch K1-1 performs power transmission, the fifth capacitor C5 stores the voltage after the voltage division of the ninth resistor R9 and the tenth resistor R10, the first resistor R1 performs current limiting processing, and the voltage regulation processing is performed through the second power transistor Q2, and finally the electrical equipment interface transmits the electrical equipment interface connected to the electrical equipment interface. When the third switch transistor is turned on under the control of the voltage stored in the fifth capacitor C5, the second relay K2 is powered and controls the second relay switch K2-1 to close, stopping the current limiting work. At this time, the second resistor R2, the fifth diode D5 and the third resistor R3 perform overvoltage detection, and when overvoltage occurs, the fifth diode D5 is broken down, the first power transistor Q1 is turned on, the voltage at the gate of the second power transistor Q2 is lowered, and the second power transistor Q2 stops working. After the overvoltage disappears, the first power transistor Q1 is turned off, and the second power transistor Q2 performs voltage regulation again. During the current limiting processing of the delay current limiting module 3, if the second resistor R2, the fifth diode D5 and the third resistor R3 detect that the input power is overvoltage, at this time, due to the high level output of the first inverter J2, the Y terminal of the first logic chip J1 outputs a high level, and the third diode D3 and the fourth diode D4 perform high level self-locking, triggering the first switch transistor V1 to be turned on, the first relay K1 is powered and controls the first relay switch K1-1 to be opened, and the power-off protection is performed.
[0052] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.
[0053] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.
Claims
1. A voltage stabilizing switch controller of an electrical appliance, characterized in that, the voltage stabilizing switch controller of the electrical appliance comprises a power supply module, a total protection module, a delay current limiting module, an input overvoltage protection module, a voltage stabilizing control module and an electrical appliance module; the power supply module is configured to access alternating current power, perform voltage reduction and rectification filtering on the alternating current power, and output first power; the total protection module is connected with the power supply module, the delay current limiting module and the input overvoltage protection module, and is configured to transmit the first power to the delay current limiting module, stop transmitting the first power when a first control signal output by the delay current limiting module is received and a second control signal output by the input overvoltage protection module is received; the delay current limiting module is connected with the input overvoltage protection module and the voltage stabilizing control module, and is configured to perform current limiting on the first power transmitted by the total protection module and output second power, set a current limiting time, output the first control signal during the current limiting time, stop outputting the first control signal when the current limiting time is exceeded, and transmit the first power to the input overvoltage protection module and the voltage stabilizing control module; the input overvoltage protection module is connected with the voltage stabilizing control module, and is configured to perform overvoltage detection on the second power or the first power transmitted by the delay current limiting module, and output the second control signal and control the voltage stabilizing control module to stop voltage stabilizing work when overvoltage occurs; the voltage stabilizing control module is configured to perform voltage stabilizing adjustment on the second power or the first power transmitted by the delay current limiting module, and output third power; the electrical appliance module is connected with the electrical appliance module, and is configured to receive the third power and supply power to the connected electrical appliance.
2. The surge switch controller for an electrical appliance according to claim 1, wherein the power supply module comprises a power supply interface, a first transformer, a first rectifier and a first capacitor; the total protection module comprises a first relay switch, a first power supply, a first relay, a first switch tube, a third diode, a fourth diode, a first logic chip and a first inverter; a first end and a second end of the power supply interface are connected with a first end and a second end of a primary side of the first transformer, a first end and a second end of a secondary side of the first transformer are connected with a first end and a second end of the first rectifier, a third end of the first rectifier is connected with a moving end of the first relay switch and a fourth end of the first rectifier, an emitter of the first switch tube and a ground end through a first capacitor, a static end of the first relay switch is connected with the delay current limiting module, a collector of the first switch tube is connected with one end of the first relay, the other end of the first relay is connected with the first power supply, a base of the first switch tube is connected with an anode of the third diode and a Y end of the first logic chip, a B end of the first logic chip is connected with a cathode of the fourth diode and a cathode of the third diode, an A end of the first logic chip is connected with an output end of the first inverter, an input end of the first inverter is connected with the delay current limiting module, and an anode of the fourth diode is connected with the input overvoltage protection module.
3. A surge switch controller for an electrical appliance according to claim 2, wherein the delay current limiting module comprises a ninth resistor, a tenth resistor, an eleventh resistor, a fifth capacitor, a twelfth resistor, a thirteenth resistor and a second relay; One end of the ninth resistor is connected to the static end of the first relay switch and to one end of the second relay through the twelfth resistor, the other end of the second relay is connected to the collector of the third switch tube, the base of the third switch tube is connected to one end of the fifth capacitor, the other end of the ninth resistor and one end of the tenth resistor through the eleventh resistor, the emitter of the third switch tube is connected to the input end of the first inverter and to the other end of the fifth capacitor, the other end of the tenth resistor and the ground end through the thirteenth resistor.
4. The surge protector switch controller for an electrical appliance of claim 3, wherein, The delay current limiting module further comprises a first resistor, a second relay switch, a first diode and a second diode; The dynamic end of the second relay switch is connected to the static end of the first relay switch and to the anode of the first diode, the static end of the second relay switch and the input overvoltage protection module through the first resistor, the cathode of the first diode is connected to the cathode of the second diode, and the anode of the second diode is connected to the voltage stabilizing control module.
5. The surge protector switch controller for an electrical appliance of claim 4, wherein, The input overvoltage protection module comprises a second resistor, a fifth diode, a third resistor, a second capacitor, a sixth diode and a first power tube; The cathode of the fifth diode is connected to the static end of the second relay switch through the second resistor, the anode of the fifth diode is connected to the anode of the fourth diode, one end of the second capacitor and the gate of the first power tube and grounded through the third resistor, the other end of the second capacitor and the cathode of the sixth diode are both grounded, the anode of the sixth diode is connected to the source of the first power tube, and the drain of the first power tube is connected to the voltage stabilizing control module.
6. A surge switch controller for an electrical appliance according to claim 5, wherein, The voltage stabilizing control module comprises a fourth resistor, a fourth capacitor, a second power tube, a fifth resistor, a second switch tube, a seventh diode, a sixth resistor, an eighth resistor and a third capacitor; and the electric appliance module comprises an electric appliance interface; The drain of the second power tube is connected to one end of the fourth resistor and the static end of the second relay switch and to the source of the second power tube, one end of the sixth resistor, one end of the seventh resistor, one end of the third capacitor and the first end of the electric appliance interface through the fourth capacitor, the other end of the fourth resistor is connected to the drain of the first power tube, the anode of the second diode and the collector of the second switch tube and to the gate of the second power tube through the fifth resistor, the emitter of the second switch tube is connected to the other end of the sixth resistor and the cathode of the seventh diode, the base of the second switch tube is connected to the other end of the seventh resistor and to the anode of the seventh diode, the other end of the third capacitor, the second end of the electric appliance interface and the ground end through the eighth resistor.