Shaver electromagnetic heating circuit, shaver assembly and shaver

Abstract

The invention discloses a shaver electromagnetic heating circuit, a shaver assembly and a shaver, the shaver electromagnetic heating circuit comprises a power supply input end, a first signal module, a second signal module, a first MOS tube, a second MOS tube, an inductance module and a first capacitor, the first MOS tube comprises a first grid electrode, a first source electrode and a first drain electrode, and the second MOS tube comprises a second grid electrode, a second source electrode and a second drain electrode; the output end of the first signal module is connected with the first grid electrode, and the first source electrode is connected with the power input end. The second MOS transistor comprises a second grid electrode, a second source electrode and a second drain electrode, the output end of the second signal module is connected with the second grid electrode, and the second source electrode is grounded; the first end of the inductance module is connected with the first drain electrode and the second drain electrode. The second end of the inductor module is connected with the first end of the first capacitor, and the second end of the first capacitor is grounded. The shaver can be subjected to electromagnetic induction heating, and the use comfort of a user is improved.

Description

Technical Field

[0001] The present application relates to but is not limited to the field of shaver heating, and in particular to a shaver electromagnetic heating circuit, a shaver assembly and a shaver. Background Art

[0002] Electric shavers are daily necessities. Electric shavers come into direct contact with human skin during use. When shaving in winter, the metal blade of the electric shaver will give the user a cold and uncomfortable feeling, resulting in a reduced user experience. If the shaver head can have a heating function, the user will no longer feel cold when shaving, and it can also promote blood circulation on the facial skin, achieve a skin-beautifying effect, and improve the user experience. In the related art, the blade cover of the shaver is directly heated by electricity (using its resistance to generate heat), but the heating is slow and requires a certain amount of heating time to achieve a stable heating effect, resulting in a poor user experience. Summary of the invention

[0003] The embodiments of the present application provide a shaver electromagnetic heating circuit, a shaver assembly and a shaver, which can perform electromagnetic induction heating on the shaver to improve the user experience.

[0004] In a first aspect, an embodiment of the present application provides a shaver electromagnetic heating circuit, comprising:

[0005] Power input terminal;

[0006] A first signal module;

[0007] A second signal module;

[0008] A first MOS transistor, comprising a first gate, a first source and a first drain, wherein the output end of the first signal module is connected to the first gate, and the first source is connected to the power input end;

[0009] A second MOS tube, comprising a second gate, a second source and a second drain, the output end of the second signal module is connected to the second gate, and the second source is grounded;

[0010] an inductor module, wherein a first end of the inductor module is respectively connected to the first drain electrode and the second drain electrode;

[0011] A first capacitor, a second end of the inductor module is connected to a first end of the first capacitor, and a second end of the first capacitor is grounded.

[0012] According to the electromagnetic heating circuit of the razor of the first aspect of the present application, there are at least the following beneficial effects: when the first MOS tube is turned on and the second MOS tube is turned off, the current inputted from the power input terminal flows into the inductor module and charges the first capacitor; when the second MOS tube is turned on and the first MOS tube is turned off, the current inputted from the power input terminal stops flowing into the inductor module and the first capacitor enters a discharge state; therefore, the charging and discharging of the inductor module can be controlled by controlling the on or off of the first MOS tube and the second MOS tube, thereby generating an electromagnetic field, which generates eddy currents in the razor blades, and generates heat when the eddy currents flow in the blades, thereby realizing electromagnetic induction heating, which has the advantage of fast heating. In addition, by connecting the output terminal of the first signal module to the first gate and connecting the output terminal of the second signal module to the second gate, the first signal module and the second signal module can control the on and off of the first MOS tube and the second MOS tube by inputting high and low level signals.

[0013] According to some embodiments of the first aspect of the present application, the first signal module includes a first input terminal, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor and a diode, the first input terminal is connected to the first end of the first resistor, the second end of the first resistor is connected to the base of the second transistor, the emitter of the second transistor is grounded, the collector of the second transistor is respectively connected to the negative terminal of the diode, the base of the first transistor and the first end of the second resistor, the second end of the second resistor is connected to the connection point of the power input terminal and the collector of the first transistor, the first end of the third resistor is connected to the connection point of the emitter of the first transistor and the positive terminal of the diode, and the second end of the third resistor is connected to the first gate.

[0014] According to some embodiments of the first aspect of the present application, the second signal module includes a second input terminal, a third transistor, a fourth transistor, a fourth resistor and a fifth resistor, the second input terminal is connected to the first end of the fourth resistor, the second end of the fourth resistor is respectively connected to the base of the third transistor and the base of the fourth transistor, the collector of the third transistor is connected to the power input terminal, the collector of the fourth transistor is grounded, the first end of the fifth resistor is connected to the connection point of the emitter of the third transistor and the emitter of the fourth transistor, and the second end of the fifth resistor is connected to the second gate.

[0015] According to some embodiments of the first aspect of the present application, the second signal module also includes a sixth resistor, a first end of the sixth resistor is connected to the emitter of the third transistor, the emitter of the fourth transistor and a connection point of the fifth resistor, and a second end of the sixth resistor is connected to the base of the third transistor, the base of the fourth transistor and a connection point of the fourth resistor.

[0016] According to some embodiments of the first aspect of the present application, the shaver electromagnetic heating circuit further includes a second capacitor, a first end of the second capacitor is connected to the second end of the inductor module, and a second end of the second capacitor is grounded.

[0017] According to some embodiments of the first aspect of the present application, the shaver electromagnetic heating circuit also includes a third capacitor, a first end of the third capacitor is connected to the connection point between the power input terminal and the first source, and a second end of the third capacitor is grounded.

[0018] According to some embodiments of the first aspect of the present application, the shaver electromagnetic heating circuit further includes a control chip, and the control chip is respectively connected to the input end of the first signal module and the input end of the second signal module.

[0019] According to some embodiments of the first aspect of the present application, the inductor module includes a first inductor, a second inductor and a third inductor, the first end of the first inductor is connected to the first drain and the second drain respectively, the second end of the first inductor is connected to the first end of the second inductor, the second end of the second inductor is connected to the first end of the third inductor, and the second end of the third inductor is connected to the first end of the first capacitor.

[0020] In the second aspect, an embodiment of the present application provides a razor assembly, comprising the razor electromagnetic heating circuit described in the first aspect, the razor assembly also comprising a mounting shell and a blade mesh cover, the blade mesh cover being mounted on the top of the mounting shell, the inductance module being mounted on the bottom of the mounting shell, a blade being further arranged between the blade mesh cover and the mounting shell, the inductance module being opposite to the blade and the blade mesh cover.

[0021] In a third aspect, an embodiment of the present application provides a shaver, comprising the shaver electromagnetic heating circuit described in the first aspect or the shaver assembly described in the second aspect.

[0022] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0024] Figure 1 A circuit diagram of an electromagnetic heating circuit for a shaver provided in an embodiment of the present application;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the integrated MOS tube;

[0026] Figure 3 A front structural diagram of a razor assembly provided in an embodiment of the present application;

[0027] Figure 4 This is a back structural diagram of a razor assembly provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] It is understood that although the functional modules are divided in the device schematic diagram and the logical order is shown in the flow chart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flow chart. The terms "first", "second", etc. in the specification, claims or the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0030] Electric shavers are daily necessities. Electric shavers come into direct contact with human skin during use. When shaving in winter, the metal blade of the electric shaver will give the user a cold and uncomfortable feeling, resulting in a reduced user experience. If the shaver head can have a heating function, the user will no longer feel cold when shaving, and it can also promote blood circulation on the facial skin, achieve a skin-beautifying effect, and improve the user experience. In the related art, the blade cover of the shaver is directly heated by electricity (using its resistance to generate heat), but the heating is slow and requires a certain amount of heating time to achieve a stable heating effect, resulting in a poor user experience.

[0031] Based on this, the embodiment of the present application provides a razor electromagnetic heating circuit, a razor assembly and a razor. When the first MOS tube is turned on and the second MOS tube is turned off, the current input at the power input end flows into the inductor module and charges the first capacitor. When the second MOS tube is turned on and the first MOS tube is turned off, the current input at the power input end stops flowing into the inductor module and the first capacitor enters a discharge state. Therefore, by controlling the on or off of the first MOS tube and the second MOS tube, the charging and discharging of the inductor module can be controlled, thereby generating an electromagnetic field. The electromagnetic field will generate eddy currents in the razor blades. When the eddy currents flow in the blades, heat will be generated, thereby realizing electromagnetic induction heating, which has the advantage of fast heating. In addition, by connecting the output end of the first signal module to the first gate and connecting the output end of the second signal module to the second gate, the first signal module and the second signal module can control the on and off of the first MOS tube and the second MOS tube by inputting high and low level signals.

[0032] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0033] First, refer to Figure 1 and Figure 2 , Figure 1 A circuit diagram of an electromagnetic heating circuit for a shaver provided in an embodiment of the present application. Figure 2 for Figure 1 Schematic diagram of the structure of the integrated MOS tube.

[0034] It can be understood that the electromagnetic heating circuit of the shaver includes a power input terminal +7V, a first signal module, a second signal module, a first MOS tube Q5, a second MOS tube Q6, an inductor module and a first capacitor C1, wherein the first MOS tube Q5 includes a first gate, a first source and a first drain, and the second MOS tube Q6 includes a second gate, a second source and a second drain. The output end of the first signal module is connected to the first gate, the first source is connected to the power input terminal +7V, and the first drain is connected to the first end of the inductor module. The output end of the second signal module is connected to the second gate, the second source is grounded, and the second drain is connected to the first end of the inductor module. The second end of the inductor module is connected to the first end of the first capacitor C1, and the second end of the first capacitor C1 is grounded.

[0035] Specifically, different level signals are sent through the first signal module to control the cut-off and conduction of the first MOS tube Q5, and different level signals are sent through the second signal module to control the cut-off and conduction of the second MOS tube Q6. When the first MOS tube Q5 is in the on state and the second MOS tube Q6 is in the off state, the working current input at the power input terminal +7V flows into the inductor module through the first MOS tube Q5 and charges the first capacitor C1; similarly, when the second MOS tube Q6 is in the on state and the first MOS tube Q5 is in the off state, the first end of the inductor module is grounded through the second MOS tube Q6, and the first capacitor C1 is in the discharge state.

[0036] It should be noted that the first signal module includes a first input terminal PWMA, a first transistor Q1, a second transistor Q2, a first resistor R1, a second resistor R2, a third resistor R3 and a diode D1. The first input terminal PWMA is connected to the first end of the first resistor R1, the second end of the first resistor R1 is connected to the base of the second transistor Q2, the emitter of the second transistor Q2 is grounded, the collector of the second transistor Q2 is respectively connected to the negative end of the diode D1, the base of the first transistor Q1 and the first end of the second resistor R2, the second end of the second resistor R2 is connected to the connection point of the power input terminal +7V and the collector of the first transistor Q1, the first end of the third resistor R3 is connected to the connection point of the emitter of the first transistor Q1 and the positive end of the diode D1, and the second end of the third resistor R3 is connected to the first gate. The first MOS transistor Q5 is a PMOS transistor. When a high-level signal is input to the first input terminal PWMA, the high-level signal drives the second transistor Q2 to be turned on via the first resistor R1. The base of the first transistor Q1 is grounded via the second transistor Q2, the first transistor Q1 is turned off, and the first gate of the first MOS transistor Q5 is grounded via the third resistor R3, the diode D1 and the second transistor Q2. At this time, due to the voltage drop between the first source and the first gate of the first MOS transistor Q5, the first MOS transistor Q5 is turned on, and the working current input at the power input terminal +7V flows into the inductor module through the first MOS transistor Q5. When a low-level signal is input to the first input terminal PWMA, the second transistor Q2 is turned off, so that the negative terminal of the diode D1 is disconnected from the ground. At this time, the diode D1 is reverse biased, and the base of the first transistor Q1 is isolated from the emitter of the first transistor Q1. The first transistor Q1 is saturated and turned on under the drive of the second resistor R2. The power input terminal +7V is connected to the first gate of the first MOS tube Q5 through the first transistor Q1. The first MOS tube Q5 is turned off due to the equal potential between the first source and the first gate. The first transistor Q1 and the second transistor Q2 provide expansion current for the first gate of the first MOS tube Q5 to speed up the on-off speed of the first MOS tube Q5. In addition, the first transistor Q1 can provide the first gate of the first MOS tube Q5 with the same voltage as the power input terminal +7V to achieve reliable shutoff of the first MOS tube Q5.

[0037] It should be noted that the second signal module includes a second input terminal PWMB, a third transistor Q3, a fourth transistor Q4, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6. The second input terminal PWMB is connected to the first end of the fourth resistor R4, the second end of the fourth resistor R4 is respectively connected to the base of the third transistor Q3, the base of the fourth transistor Q4 and the first end of the sixth resistor R6, the collector of the third transistor Q3 is connected to the power input terminal +7V, the collector of the fourth transistor Q4 is grounded, the first end of the fifth resistor R5 is respectively connected to the emitter of the third transistor Q3, the emitter of the fourth transistor Q4 and the second end of the sixth resistor R6, and the second end of the fifth resistor R5 is connected to the second gate. The second MOS transistor Q6 is an NMOS transistor. When a high-level signal is input to the second input terminal PWMB, the third transistor Q3 is driven to be turned on via the fourth resistor R4, and the base of the fourth transistor Q4 is cut off due to the high level. The working current inputted from the power input terminal +7V drives the second MOS transistor Q6 to be turned on via the third transistor Q3 and the fifth resistor R5. In addition, the third transistor Q3 and the fourth transistor Q4 provide expansion current for the second gate of the second MOS transistor Q6 to speed up the on-off speed of the second MOS transistor Q6. Similarly, when a low level signal is input to the second input terminal PWMB, the base of the third transistor Q3 is cut off due to the low level, the base of the fourth transistor Q4 is turned on due to the low level, the second gate of the second MOS transistor Q6 is grounded through the fifth resistor R5 and the fourth transistor Q4, and the second MOS transistor Q6 is cut off. In addition, by connecting the sixth resistor R6 between the base and the emitter of the fourth transistor Q4, the fourth transistor Q4 is completely turned on, and the voltage of the second gate of the second MOS transistor Q6 is close to 0 volts.

[0038] It should be noted that the first MOS transistor Q5 and the second MOS transistor Q6 may be integrated MOS transistors 100 , for example, SMD dual MOS transistors of model NCE4614.

[0039] It should be noted that the electromagnetic heating circuit of the shaver also includes a control chip, which is connected to the first input terminal PWMA and the second input terminal PWMB respectively. The control chip outputs different level signals through the first input terminal PWMA and the second input terminal PWMB, thereby controlling the conduction and cutoff of the first MOS tube Q5 and the second MOS tube Q6. When a high level signal is input to the first input terminal PWMA, the second input terminal PWMB is a low level signal. Similarly, when a high level signal is input to the second input terminal PWMB, the first input terminal PWMA is a low level signal. In addition, since there is a crossover dead zone between the push-pull driven first MOS tube Q5 and the second MOS tube Q6, when the control chip alternately outputs high level signals to the first input terminal PWMA and the second input terminal PWMB, it is necessary to perform appropriate low level delay processing on the outputs of the first input terminal PWMA and the second input terminal PWMB to avoid the crossover dead zone and avoid the situation where the first MOS tube Q5 and the second MOS tube Q6 are turned on at the same time.

[0040] Specifically, the current flow direction of the inductor module can be controlled by controlling the conduction or cutoff of the first MOS transistor Q5 and the second MOS transistor Q6, thereby generating an electromagnetic field, which will generate eddy currents in the razor blades. When the eddy currents flow in the blades, heat will be generated, thereby achieving rapid heating by electromagnetic induction. The wireless transmission power of the inductor module can also be adjusted by controlling the signal duty ratio of the first input terminal PWMA and the second input terminal PWMB, or adjusting the voltage of the power input terminal (higher or lower than +7 volts), and the greater the wireless transmission power of the inductor module, the hotter the blades.

[0041] It can be understood that the shaver electromagnetic heating circuit also includes a second capacitor C2 and a third capacitor C3, the first end of the second capacitor C2 is connected to the second end of the inductor module, the second end of the second capacitor C2 is grounded, the first end of the third capacitor C3 is connected to the connection point between the power input terminal +7V and the first source, and the second end of the third capacitor C3 is grounded.

[0042] Specifically, the inductor module includes a first inductor L1, a second inductor L2 and a third inductor L3. The first end of the first inductor L1 is connected to the first drain and the second drain respectively, the second end of the first inductor L1 is connected to the first end of the second inductor L2, the second end of the second inductor L2 is connected to the first end of the third inductor L3, and the second end of the third inductor L3 is connected to the first end of the first capacitor C1.

[0043] It should be noted that, in some embodiments, the signal frequency output by the first input terminal PWMA and the second input terminal PWMB is 100KHz to 110KHz, the first inductor L1, the second inductor L2 and the third inductor L3 are all multi-strand winding coils with leads with an inductance of 5.6uH, an outer diameter of 19 mm, an inner diameter of 9 mm and a thickness of 2 mm, the first capacitor C1 is a 100nF, 5% precision, 100V withstand voltage NPO material 1206 chip capacitor, the second capacitor C2 is a 5% precision, 100V withstand voltage NPO material 1206 chip capacitor, in addition, the capacitance value of the second capacitor C2 can be adjusted between 5nF and 22nF according to actual application conditions.

[0044] It should be noted that, in some embodiments, the diode D1 can be a diode of model 1N4148, the first transistor Q1, the second transistor Q2 and the third transistor Q3 are NPN chip transistors of models MMBT3904 or 8050, the fourth transistor Q4 is a PNP chip transistor of models MMBT3906 or 8550, the third capacitor C3 is a 10uF chip capacitor with a withstand voltage ≥25V, the resistance values ​​of the first resistor R1, the second resistor R2, the fourth resistor R4 and the sixth resistor R6 are 1K ohms, and the resistance values ​​of the third resistor R3 and the fifth resistor R5 are 2.2 ohms.

[0045] Second, refer to Figure 3 and Figure 4 , Figure 3 This is a front structural diagram of a razor assembly provided in an embodiment of the present application. Figure 4 This is a back structural diagram of a razor assembly provided in an embodiment of the present application.

[0046] It is understandable that the razor assembly also includes a mounting shell 200 and a blade mesh cover 300, the blade mesh cover 300 is mounted on the top of the mounting shell 200, the inductor module is mounted on the bottom of the mounting shell 200, and a blade is also arranged between the blade mesh cover 300 and the mounting shell 200, and the inductor module is directly opposite to the blade and the blade mesh cover 300. Among them, the blade mesh cover 300 and the blade are both made of conductive materials, and the charging and discharging of the inductor module can be controlled by controlling the conduction or cutoff of the first MOS tube Q5 and the second MOS tube Q6, thereby generating an electromagnetic field, and the electromagnetic field will generate eddy currents in the blade and the blade mesh cover 300, and the eddy currents will generate heat when flowing in the blade and the blade mesh cover 300, thereby realizing rapid heating by electromagnetic induction. Among them, the wireless transmission power of the inductor module can also be adjusted by controlling the signal duty ratio of the first input terminal PWMA and the second input terminal PWMB, or adjusting the voltage of the power input terminal (higher or lower than +7 volts), and the greater the wireless transmission power of the inductor module, the hotter the blade and the blade mesh cover.

[0047] It should be noted that the installation shell 200 is installed with a first installation slot, a second installation slot and a third installation slot, a first blade net cover is installed on the top of the first installation slot, a first blade is arranged between the first installation slot and the first blade net cover, a second blade is installed on the top of the second installation slot, a second blade is arranged between the second installation slot and the second blade net cover, a third blade net cover is installed on the top of the third installation slot, and a third blade is arranged between the third installation slot and the third blade net cover. The first inductor L1 is arranged at the bottom of the first installation slot and is opposite to the first blade net cover and the first blade partition installation shell 200. The second inductor L2 is arranged at the bottom of the second installation slot and is opposite to the second blade net cover and the second blade partition installation shell 200. The third inductor L3 is arranged at the bottom of the third installation slot and is opposite to the third blade net cover and the third blade partition installation shell 200. That is, the first blade, the second blade, the third blade, the first blade net cover, the second blade net cover and the third blade net cover are located on one side of the installation shell 200, and the first inductor L1, the second inductor L2 and the third inductor L3 are located on the other side of the installation shell 200. Since the first inductor L1, the second inductor L2 and the third inductor L3 are connected in series, the charging and discharging of the first inductor L1, the second inductor L2 and the third inductor L3 can be controlled simultaneously by controlling the conduction or cutoff of the first MOS tube Q5 and the second MOS tube Q6, thereby achieving heating of the first blade, the second blade, the third blade, the first blade mesh cover, the second blade mesh cover and the third blade mesh cover.

[0048] It should be noted that P1 and P2 may be lead fixing points of the inductor module on the mounting shell.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0050] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above-mentioned implementation mode. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the present application. These equivalent deformations or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A shaver electromagnetic heating circuit, characterized in that: include: Power input terminal; A first signal module; A second signal module; A first MOS transistor, comprising a first gate, a first source and a first drain, wherein the output end of the first signal module is connected to the first gate, and the first source is connected to the power input end; A second MOS tube, comprising a second gate, a second source and a second drain, the output end of the second signal module is connected to the second gate, and the second source is grounded; an inductor module, wherein a first end of the inductor module is respectively connected to the first drain electrode and the second drain electrode; A first capacitor, a second end of the inductor module is connected to a first end of the first capacitor, and a second end of the first capacitor is grounded.

2. The electromagnetic heating circuit for a shaver according to claim 1, characterized in that: The first signal module includes a first input terminal, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor and a diode, the first input terminal is connected to the first end of the first resistor, the second end of the first resistor is connected to the base of the second transistor, the emitter of the second transistor is grounded, the collector of the second transistor is respectively connected to the negative terminal of the diode, the base of the first transistor and the first end of the second resistor, the second end of the second resistor is connected to the connection point of the power input terminal and the collector of the first transistor, the first end of the third resistor is connected to the connection point of the emitter of the first transistor and the positive terminal of the diode, and the second end of the third resistor is connected to the first gate.

3. The electromagnetic heating circuit for a shaver according to claim 1, characterized in that: The second signal module includes a second input terminal, a third triode, a fourth triode, a fourth resistor and a fifth resistor, the second input terminal is connected to the first end of the fourth resistor, the second end of the fourth resistor is respectively connected to the base of the third triode and the base of the fourth triode, the collector of the third triode is connected to the power input terminal, the collector of the fourth triode is grounded, the first end of the fifth resistor is connected to the connection point of the emitter of the third triode and the emitter of the fourth triode, and the second end of the fifth resistor is connected to the second gate.

4. The electromagnetic heating circuit for a shaver according to claim 3, characterized in that: The second signal module also includes a sixth resistor, a first end of the sixth resistor is connected to the emitter of the third transistor, the emitter of the fourth transistor and a connection point of the fifth resistor, and a second end of the sixth resistor is connected to the base of the third transistor, the base of the fourth transistor and a connection point of the fourth resistor.

5. The electromagnetic heating circuit for a shaver according to claim 1, characterized in that: The electromagnetic heating circuit of the shaver further includes a second capacitor, a first end of the second capacitor is connected to the second end of the inductor module, and a second end of the second capacitor is grounded.

6. The electromagnetic heating circuit for a shaver according to claim 1, characterized in that: The electromagnetic heating circuit of the shaver further comprises a third capacitor, a first end of the third capacitor is connected to a connection point between the power input terminal and the first source, and a second end of the third capacitor is grounded.

7. The electromagnetic heating circuit for a shaver according to claim 1, characterized in that: The electromagnetic heating circuit of the shaver further comprises a control chip, and the control chip is respectively connected to the input end of the first signal module and the input end of the second signal module.

8. The electromagnetic heating circuit for a shaver according to claim 1, characterized in that: The inductor module includes a first inductor, a second inductor and a third inductor, wherein a first end of the first inductor is connected to the first drain and the second drain respectively, a second end of the first inductor is connected to a first end of the second inductor, a second end of the second inductor is connected to a first end of the third inductor, and a second end of the third inductor is connected to a first end of the first capacitor.

9. A razor assembly, characterized in that: The electromagnetic heating circuit of the shaver comprises any one of claims 1 to 8, wherein the shaver assembly further comprises a mounting shell and a blade mesh cover, wherein the blade mesh cover is mounted on the top of the mounting shell, and the inductance module is mounted on the bottom of the mounting shell, and a blade is further arranged between the blade mesh cover and the mounting shell, and the inductance module is directly opposite to the blade and the blade mesh cover.

10. A razor, characterized in that: It comprises the shaver electromagnetic heating circuit according to any one of claims 1 to 8 or the shaver assembly according to claim 9.

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