CN218936784U - Defrosting heater driving circuit and refrigerator - Google Patents
Defrosting heater driving circuit and refrigerator Download PDFInfo
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- CN218936784U CN218936784U CN202320017277.XU CN202320017277U CN218936784U CN 218936784 U CN218936784 U CN 218936784U CN 202320017277 U CN202320017277 U CN 202320017277U CN 218936784 U CN218936784 U CN 218936784U
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Abstract
The utility model discloses a defrosting heater driving circuit and a refrigerator, which are applied to the technical field of defrosting heater driving.
Description
Technical Field
The utility model relates to the technical field of defrosting heater driving, in particular to a defrosting heater driving circuit and a refrigerator.
Background
0 with the development of technology and the improvement of living standard of people, the use of direct current refrigerators is also becoming more popular.
When the refrigerator is always refrigerating, the frost on the evaporator is thicker and thicker, and the heat exchange between the evaporator and the air and objects in the refrigerator is affected, so that the frost on the evaporator of the refrigerator needs to be melted, and defrosting by adopting a defrosting heater (or defrosting heating wire) is a basic function in the direct-current refrigerator.
In the prior art, a relay is used for controlling a defrosting heater to heat and defrost, the power supply voltage of the direct-current refrigerator 5 is lower, and under the condition of certain power, the current on the defrosting heater is larger, so that the defrosting heater is easy to operate
Causing a fire strike when the relay is in the suction, causing a safety hazard.
Disclosure of Invention
0 the embodiment of the application provides a defrosting heater driving circuit and refrigerator, and defrosting heating is driven to be improved
Security in use.
In order to solve the above-described problems, the present utility model provides, in a first aspect, a defrosting heater driving circuit including:
the switching power supply control processor is used for generating a control signal and sending the control signal;
a 5 switch power supply module connected with the switch power supply control processor and used for receiving the control signal,
and driving the defrosting heater according to the control signal.
Optionally, the switching power supply module includes:
the heater driving processor is connected with the switching power supply control processor and is used for receiving the control signal and generating a driving signal according to the control signal;
and the booster circuit is connected with the heater driving processor and is used for receiving the driving signal and driving the defrosting heater after boosting the driving signal.
Optionally, the heater driving processor is a switching power supply pulse modulation control chip.
Optionally, a ， The switching power supply pulse modulation control chip further comprises:
one end of the first resistor is connected with the first end of the heater driving processor, and the other end of the first resistor is connected with the second end of the heater driving processor;
one end of the first capacitor is connected with the other end of the first resistor, and the other end of the first capacitor is connected with the third end of the heater driving processor;
one end of the second resistor is connected with the other end of the first resistor;
one end of the second capacitor is connected with one end of the second resistor, and the other end of the second capacitor is connected with one end of the first resistor;
one end of the third resistor is connected with one end of the second capacitor, and the other end of the third resistor is respectively connected with the fourth end of the heater driving processor and the fifth end of the heater driving processor;
and one end of the fourth resistor is connected with the other end of the first capacitor, and the other end of the fourth resistor is connected with the fourth end of the heater driving processor.
Optionally, the switching power supply pulse modulation control chip further includes:
one end of the third capacitor is connected with the fifth end of the heater driving processor, and the other end of the third capacitor is connected with the sixth end of the heater driving processor;
and one end of the fifth resistor is connected with the other end of the second capacitor, and the other end of the fifth resistor is connected with the first voltage end.
Optionally, the switching power supply pulse modulation control chip further includes:
one end of the fourth capacitor is connected with the first voltage end, and the other end of the fourth capacitor is connected with a seventh end of the heater driving processor;
and one end of the sixth resistor is connected with the first voltage end, and the other end of the sixth resistor is connected with the eighth end of the heater driving processor.
Optionally, the boost circuit is a full-wave rectifying circuit.
Optionally, the full-wave rectifying circuit includes:
a base of the first transistor is connected with a ninth end of the heater driving processor;
a base of the second transistor is connected with a tenth end of the heater driving processor, and a base of the first transistor is connected with a base of the second transistor;
one end of the fifth capacitor is connected with the collector electrode of the first transistor, the collector electrode of the second transistor and the first voltage end respectively, and the other end of the fifth capacitor is connected with the second voltage end;
the first end of the transformer is connected with the emitter of the first transistor, the second end of the transformer is connected with the emitter of the second transistor, and an input tap of the transformer is connected with the other end of the fifth capacitor;
the anode of the first diode is connected with the third end of the transformer;
the anode of the second diode is connected with the fourth end of the transformer, and the cathode of the second diode is connected with the cathode of the first diode;
one end of the inductor is connected with an output tap of the transformer;
one end of the sixth capacitor is connected with the cathode of the first diode, and the other end of the sixth capacitor is connected with the other end of the inductor;
one end of the seventh resistor is connected with the other end of the sixth capacitor, and the other end of the seventh resistor is connected with the heater driving processor;
one end of the eighth resistor is connected with the other end of the sixth capacitor, and the other end of the eighth resistor is connected with the first voltage end;
a ninth resistor, one end of which is connected with one end of the sixth capacitor, and the other end of which is connected with the heater driving processor;
a tenth resistor, wherein one end of the tenth resistor is connected with the other end of the ninth resistor, and the other end of the tenth resistor is respectively connected with the other end of the eighth resistor and the first voltage end;
and one end of the seventh capacitor is connected with one end of the ninth resistor, and the other end of the seventh capacitor is connected with the first voltage end.
Optionally, the full-wave rectifying circuit further includes:
an eleventh resistor, one end of which is connected with the base electrode of the first transistor, and the other end of which is connected with the emitter electrode of the first transistor;
and one end of the twelfth resistor is connected with the base electrode of the second transistor, and the other end of the twelfth resistor is connected with the emitter electrode of the second transistor.
In order to solve the above-described problems, a second aspect of the present utility model provides a refrigerator including:
an integrated circuit provided with any one of the defrosting heater driving circuits of the first aspect described above.
The utility model is connected with the switch power supply control processor through the switch power supply module, receives the control signal from the switch power supply control processor, and drives the defrosting heater according to the control signal by the switch power supply module, so that the potential safety hazard caused by circuit components (such as a relay) during defrosting can be reduced, and the safety and reliability during driving the defrosting heater are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a defrosting heater driving circuit according to an embodiment of the present application;
FIG. 2 is a schematic diagram of the connection of a switching power supply control processor and a switching power supply module according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a switching power module according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a pulse modulation control chip of a switching power supply according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a structure of a pulse modulation control chip of another switch according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a structure of a pulse modulation control chip of another switch according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a full-wave rectifying circuit according to an embodiment of the present disclosure;
fig. 8 is a schematic diagram of the structure of a further full-wave rectifying circuit in an embodiment of the present application;
fig. 9 is a schematic view of a refrigerator in an embodiment of the present application.
Description of the main reference signs
First to twelfth resistors R1 to R12
First to seventh capacitances C1 to C7
First diode to second diode D1-D2
First transistor to second transistor N1-N2
Transformer L
Inductance T
Switching power supply control processor 10
Switching power supply module 20
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. One skilled in the relevant art will recognize, however, that the aspects of the disclosure may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
In the present disclosure, unless explicitly specified and limited otherwise, the terms "coupled," "connected," and the like are to be construed broadly, and may be fixedly attached, detachably attached, or integrally formed, for example; can be electrically connected or communicated with each other; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.
Furthermore, in the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. "and/or" describes an association relationship of an associated object, meaning that there may be three relationships, e.g., a and/or B, and that there may be a alone, B alone, and both a and B. The symbol "/" generally indicates that the context-dependent object is an "or" relationship. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In one embodiment, fig. 1 shows a schematic structural diagram of a defrosting heater driving circuit of the present utility model, and as shown in fig. 1, the defrosting heater driving circuit includes a switching power supply control processor 10, a switching power supply module 20 and a defrosting heater.
The switching power supply control processor 10 is used for generating a control signal and sending the control signal; the switching power supply module 20 is connected to the switching power supply control processor 10, and is configured to receive the control signal and drive the defrosting heater according to the control signal.
The control signal may be a signal for controlling the switching power supply module to be turned on or off, which may be set according to an actual application scenario, and is not limited herein.
The switching power supply control processor may be a microcontroller of model STM 32.
The switching power supply module and the switching power supply control processor are connected through a serial port for communication.
Optionally, fig. 2 shows a schematic connection diagram of the switching power supply control processor and the switching power supply module, as shown in fig. 2, where the switching power supply module and the switching power supply control processor are connected through a receiving line, a transmitting line and a ground line, and the switching power supply control processor sends a control signal to the switching power supply module through the transmitting line; the switching power supply control processor obtains fault signals from the switching power supply module through the receiving line, wherein the fault signals can be signals of overvoltage, overcurrent, short circuit of a defrosting heater and the like in the switching power supply module.
Illustratively, after the power supply (e.g., a battery) provides a voltage (e.g., 12V) to the switching power supply control processor and the switching power supply module, the switching power supply control processor sends a control signal to the switching power supply module, and the switching power supply module drives the defrosting heater according to the control signal after receiving the control signal.
In this embodiment, the switching power supply module is connected to the switching power supply control processor, receives a control signal from the switching power supply control processor, and drives the defrosting heater according to the control signal, so that potential safety hazards caused by circuit components (such as a relay) during defrosting can be reduced, and safety and reliability during driving the defrosting heater are improved.
In one embodiment, fig. 3 shows a schematic structure of a switching power supply module, and as shown in fig. 3, the switching power supply module 20 includes a heater driving processor 201 and a boost circuit 202.
The heater driving processor 201 is connected with the switching power supply control processor 10, and the heater driving processor 201 is used for receiving the control signal and generating a driving signal according to the control signal; the booster circuit 202 is connected to the heater driving processor 201, and is configured to receive the driving signal, boost the driving signal, and then drive the defrosting heater.
In this application, the driving signal may be boosted by using a switching dc Boost circuit, which may be a Boost circuit.
Illustratively, after the power supply (such as a storage battery) supplies voltages (such as 12V) to the switching power supply control processor and the heater driving processor, the switching power supply control processor sends a control signal to the heater driving processor, and after the heater driving processor receives the control signal, the heater driving processor generates a driving signal according to the control signal and outputs the driving signal to the boosting circuit to boost (such as 12V to 24V) to supply voltage to the defrosting heater, so as to drive the defrosting heater.
In this embodiment, the switching power supply control processor sends the control signal to the heater driving processor, and after the heater driving processor receives the control signal, the heater driving processor generates the driving signal according to the control signal and outputs the driving signal to the boost circuit to boost the voltage for the defrosting heater to supply the voltage, so that the defrosting heater is driven, the potential safety hazard caused by circuit components (such as a relay) during defrosting can be reduced, and the safety and reliability during driving the defrosting heater are improved.
In one embodiment, the heater driver processor 202 is a switching power supply pulse modulation chip.
The switching power supply pulse modulation chip can be TL494, IR 3M 02, IR9494, MB-3759 and the like. For the sake of understanding, the TL494 is further described herein as a fixed operating frequency pulse width modulation circuit, in which a pulse width modulation circuit, a linear sawtooth oscillator, an error amplifier, a reference voltage source and other circuits are integrated, an oscillator in a chip can operate in an active mode or a controlled mode, and a driving output can operate in a push-pull mode or a single-ended output mode, so that a driving signal can be generated by a switching power supply pulse modulation chip according to a control signal and output to a boost circuit, thereby driving a defrosting heater, reducing potential safety hazards caused by circuit components (such as a relay) during defrosting, and improving safety and reliability during driving the defrosting heater. In addition, an error signal amplifier, a 5.0V reference voltage generator, an under-voltage protection circuit and the like are further arranged in the TL494, so that the safety and the reliability when the defrosting heater is driven are further improved.
Fig. 4 shows a schematic structural diagram of a switching power supply pulse modulation chip, and as shown in fig. 4, the switching power supply pulse modulation control chip further includes a first resistor R1, a first capacitor C1, a second resistor R2, a second capacitor C2, a third resistor R3, and a fourth resistor R4.
One end of the first resistor R1 is connected to the first end of the heater driving processor 201, and the other end of the first resistor R1 is connected to the second end of the heater driving processor 201; one end of the first capacitor C1 is connected with the other end of the first resistor R1, and the other end of the first capacitor C1 is connected with the third end of the heater driving processor 201; one end of the second resistor R2 is connected with the other end of the first resistor R1; one end of the second capacitor C2 is connected with one end of the second resistor R2, and the other end of the second capacitor C2 is connected with one end of the first resistor R1; one end of the third resistor R3 is connected with one end of the second capacitor C2, and the other end of the third resistor R3 is respectively connected with the fourth end of the heater driving processor 201 and the fifth end of the heater driving processor 201; one end of the fourth resistor R4 is connected to the other end of the first capacitor C1, and the other end of the fourth resistor R4 is connected to the fourth end of the heater driving processor 201. Referring to fig. 4, the first end is the pin 2 of the heater driving processor 201, the second end is the pin 3 of the heater driving processor 201, the third end is the pin 15 of the heater driving processor 201, the fourth end is the pin 13 of the heater driving processor 201, and the fifth end is the pin 14 of the heater driving processor 201. Through the connection, a feedback input signal is provided for the switching power supply pulse modulation chip, so that the switching power supply pulse modulation chip can generate an accurate driving signal, and the safety and reliability of the defrosting heater are improved.
Fig. 5 shows a schematic structural diagram of another pwm control chip, and as shown in fig. 5, the pwm control chip further includes a third capacitor C3 and a fifth resistor R5.
One end of the third capacitor C3 is connected to the fifth end of the heater driving processor 201, and the other end of the third capacitor C3 is connected to the sixth end of the heater driving processor 201; one end of the fifth resistor R5 is connected with the other end of the second capacitor C2, and the other end of the fifth resistor R5 is connected with the first voltage end. Referring to fig. 5, the fifth end is the pin 14 of the heater driving processor 201, the sixth end is the pin 4 of the heater driving processor 201, the first voltage end is the negative electrode of the power supply (such as a storage battery), the positive electrode of the power supply (such as the storage battery) is the second voltage end, the pin 12 of the heater driving processor 201 is connected, the switching power supply control processor 10 is connected to the enable pin EN of the heater driving processor 201, and by the connection, the stability of the driving signal generated by the heater driving processor can be improved, thereby being beneficial to the switching power supply pulse modulation chip to generate an accurate driving signal, and improving the safety and reliability when the defrosting heater is driven.
Fig. 6 shows a schematic structural diagram of another pwm control chip, and as shown in fig. 6, the pwm control chip further includes a fourth capacitor C4 and a sixth resistor R6.
One end of the fourth capacitor C4 is connected to the first voltage end, and the other end of the fourth capacitor C4 is connected to the seventh end of the heater driving processor 201; one end of the sixth resistor R6 is connected to the first voltage terminal, and the other end of the sixth resistor R6 is connected to the eighth end of the heater driving processor 201. The fourth capacitor may be an oscillating capacitor, the sixth resistor may be an oscillating resistor, referring to fig. 6, the seventh end is the pin 5 of the heater driving processor 201, and the eighth end is the pin 6 of the heater driving processor 201, and by the connection, the oscillating frequency of the signal of the heater driving processor is controlled, which is beneficial for the heater driving processor to generate the driving signal, and improves the safety and reliability when the defrosting heater is driven.
Alternatively, the booster circuit 202 is a full-wave rectifying circuit.
Fig. 7 shows a schematic diagram of a full-wave rectifying circuit, which includes a first transistor, a second transistor, a fifth capacitor, a transformer, a first diode, a second diode, an inductor, a sixth capacitor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, and a seventh capacitor, as shown in fig. 7.
Wherein the base of the first transistor N1 is connected to the ninth end of the heater driving processor 201; the base of the second transistor N2 is connected to the tenth end of the heater driving processor 201, and the base of the first transistor N1 is connected to the base of the second transistor N2; one end of the fifth capacitor C5 is connected with the collector of the first transistor N1, the collector of the second transistor N2 and the first voltage end respectively, and the other end of the fifth capacitor C5 is connected with the second voltage end; the first end of the transformer T is connected with the emitter of the first transistor N1, the second end of the transformer T is connected with the emitter of the second transistor N2, and an input tap of the transformer T is connected with the other end of the fifth capacitor C5; the anode of the first diode D1 is connected with the third end of the transformer T; the anode of the second diode D2 is connected with the fourth end of the transformer T, and the cathode of the second diode D2 is connected with the cathode of the first diode D1; one end of the inductor L is connected with an output tap of the transformer T; one end of the sixth capacitor C6 is connected with the cathode of the first diode D1, and the other end of the sixth capacitor C6 is connected with the other end of the inductor L; one end of the seventh resistor R7 is connected to the other end of the sixth capacitor C6, the other end of the seventh resistor R7 is connected to the heater driving processor 201, and specifically, the other end of the first resistor R7 is connected to the pin 15 of the heater driving processor 201; one end of the eighth resistor R8 is connected with the other end of the sixth capacitor C6, and the other end of the eighth resistor R8 is connected with the first voltage end; one end of the ninth resistor R9 is connected to one end of the sixth capacitor C6, and the other end of the ninth resistor R9 is connected to the heater driving processor 201, specifically, the other end of the ninth resistor R9 is connected to the pin 1 of the heater driving processor 201; one end of the tenth resistor R10 is connected with the other end of the ninth resistor R9, and the other end of the tenth resistor R10 is respectively connected with the other end of the eighth resistor R8 and the first voltage end; one end of the seventh capacitor C7 is connected to one end of the ninth resistor R9, and the other end of the seventh capacitor C7 is connected to the first voltage end. Referring to fig. 7, the ninth terminal is a pin 8 of the heater driving processor, and the tenth terminal is a pin 11 of the heater driving processor. The first voltage terminal and the second voltage terminal are explained with reference to the above embodiments, and are not repeated here. Through the connection, the output driving signal is rectified and boosted, so that the defrosting heater is driven, potential safety hazards caused by circuit components (such as a relay) during defrosting can be reduced, and safety and reliability during driving the defrosting heater are improved.
Fig. 8 shows a schematic structural diagram of yet another full-wave rectifying circuit, which further includes an eleventh resistor R11 and a twelfth resistor R12 as shown in fig. 8.
One end of the eleventh resistor R11 is connected with the base electrode of the first transistor N1, and the other end of the eleventh resistor R11 is connected with the emitter electrode of the first transistor N1; one end of the twelfth resistor R12 is connected with the base electrode of the second transistor N2, and the other end of the twelfth resistor R12 is connected with the emitter electrode of the second transistor N2.
Fig. 9 shows a schematic structure of a refrigerator, which includes an integrated circuit board as shown in fig. 9.
Wherein the integrated circuit board comprises any of the defrosting heater driving circuits of the above embodiments.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. A defrosting heater driving circuit, characterized by comprising:
the switching power supply control processor is used for generating a control signal and sending the control signal;
and the switch power supply module is connected with the switch power supply control processor and is used for receiving the control signal and driving the defrosting heater according to the control signal.
2. The defrosting heater driver circuit of claim 1 wherein the switching power supply module comprises:
the heater driving processor is connected with the switching power supply control processor and is used for receiving the control signal and generating a driving signal according to the control signal;
and the booster circuit is connected with the heater driving processor and is used for receiving the driving signal and driving the defrosting heater after boosting the driving signal.
3. The defrosting heater driver circuit of claim 2 wherein the heater driver processor is a switching power supply pulse modulation control chip.
4. A defrosting heater driver circuit as defined in claim 3, wherein the switching power supply pulse modulation control chip further comprises:
one end of the first resistor is connected with the first end of the heater driving processor, and the other end of the first resistor is connected with the second end of the heater driving processor;
one end of the first capacitor is connected with the other end of the first resistor, and the other end of the first capacitor is connected with the third end of the heater driving processor;
one end of the second resistor is connected with the other end of the first resistor;
one end of the second capacitor is connected with one end of the second resistor, and the other end of the second capacitor is connected with one end of the first resistor;
one end of the third resistor is connected with one end of the second capacitor, and the other end of the third resistor is respectively connected with the fourth end of the heater driving processor and the fifth end of the heater driving processor;
and one end of the fourth resistor is connected with the other end of the first capacitor, and the other end of the fourth resistor is connected with the fourth end of the heater driving processor.
5. A defrosting heater driver circuit as defined in claim 3, wherein the switching power supply pulse modulation control chip further comprises:
one end of the third capacitor is connected with the fifth end of the heater driving processor, and the other end of the third capacitor is connected with the sixth end of the heater driving processor;
and one end of the fifth resistor is connected with the other end of the third capacitor, and the other end of the fifth resistor is connected with the first voltage end.
6. A defrosting heater driver circuit as defined in claim 3, wherein the switching power supply pulse modulation control chip further comprises:
one end of the fourth capacitor is connected with the first voltage end, and the other end of the fourth capacitor is connected with the seventh end of the heater driving processor;
and one end of the sixth resistor is connected with the first voltage end, and the other end of the sixth resistor is connected with the eighth end of the heater driving processor.
7. The defrosting heater driver circuit of claim 2 wherein the boost circuit is a full wave rectifier circuit.
8. The defrosting heater driver circuit of claim 7, wherein the full wave rectifier circuit comprises:
a base of the first transistor is connected with a ninth end of the heater driving processor;
a base of the second transistor is connected with a tenth end of the heater driving processor, and a base of the first transistor is connected with a base of the second transistor;
one end of the fifth capacitor is connected with the collector electrode of the first transistor, the collector electrode of the second transistor and the first voltage end respectively, and the other end of the fifth capacitor is connected with the second voltage end;
the first end of the transformer is connected with the emitter of the first transistor, the second end of the transformer is connected with the emitter of the second transistor, and an input tap of the transformer is connected with the other end of the fifth capacitor;
the anode of the first diode is connected with the third end of the transformer;
the anode of the second diode is connected with the fourth end of the transformer, and the cathode of the second diode is connected with the cathode of the first diode;
one end of the inductor is connected with an output tap of the transformer;
one end of the sixth capacitor is connected with the cathode of the first diode, and the other end of the sixth capacitor is connected with the other end of the inductor;
one end of the seventh resistor is connected with the other end of the sixth capacitor, and the other end of the seventh resistor is connected with the heater driving processor;
one end of the eighth resistor is connected with the other end of the sixth capacitor, and the other end of the eighth resistor is connected with the first voltage end;
a ninth resistor, one end of which is connected with one end of the sixth capacitor, and the other end of which is connected with the heater driving processor;
a tenth resistor, wherein one end of the tenth resistor is connected with the other end of the ninth resistor, and the other end of the tenth resistor is respectively connected with the other end of the eighth resistor and the first voltage end;
and one end of the seventh capacitor is connected with one end of the ninth resistor, and the other end of the seventh capacitor is connected with the first voltage end.
9. The defrosting heater driver circuit of claim 8, wherein the full wave rectifier circuit further comprises:
an eleventh resistor, one end of which is connected with the base electrode of the first transistor, and the other end of which is connected with the emitter electrode of the first transistor;
and one end of the twelfth resistor is connected with the base electrode of the second transistor, and the other end of the twelfth resistor is connected with the emitter electrode of the second transistor.
10. A refrigerator, comprising:
an integrated circuit provided with a defrosting heater driving circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320017277.XU CN218936784U (en) | 2023-01-04 | 2023-01-04 | Defrosting heater driving circuit and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320017277.XU CN218936784U (en) | 2023-01-04 | 2023-01-04 | Defrosting heater driving circuit and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218936784U true CN218936784U (en) | 2023-04-28 |
Family
ID=86091958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320017277.XU Active CN218936784U (en) | 2023-01-04 | 2023-01-04 | Defrosting heater driving circuit and refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218936784U (en) |
-
2023
- 2023-01-04 CN CN202320017277.XU patent/CN218936784U/en active Active
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