CN219550964U - Refrigerator main control board and refrigerator - Google Patents
Refrigerator main control board and refrigerator Download PDFInfo
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- CN219550964U CN219550964U CN202320192771.XU CN202320192771U CN219550964U CN 219550964 U CN219550964 U CN 219550964U CN 202320192771 U CN202320192771 U CN 202320192771U CN 219550964 U CN219550964 U CN 219550964U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The utility model belongs to the technical field of electronic circuits, and particularly relates to a main control board of a refrigerator and the refrigerator. The main control board of the refrigerator provided by the utility model comprises: the first control unit is connected with the power supply and is used for providing a control signal for a first load in the refrigerator; a second control unit for providing a control signal for a second load in the refrigerator; the first end of the switch unit is connected with the power supply, and the second end of the switch unit is connected with the second control unit; and the time sequence control unit is used for controlling the on or off of the switch unit according to a preset time sequence. The circuit structure of the refrigerator main control board provided by the utility model is simple, and the time sequence control unit can control the switch unit to be turned on or turned off according to the preset time sequence, so that the cost of hardware debugging is reduced.
Description
Technical Field
The utility model belongs to the technical field of electronic circuits, and particularly relates to a main control board of a refrigerator and the refrigerator.
Background
With the complexity and diversification of the functions of the refrigerator products, the control system is gradually complicated. In order to ensure that each functional module can work in an initially set working state, the control system controls the time sequence of the power supply of each functional module in the power supply process so that each functional module can work normally.
The conventional timing control mainly controls the level change of IO through a timing signal, and is actually based on the control of the code to the timing change. The code of the time sequence control part is added with the main control chip, so that the total code workload is increased, and the maintenance cost is increased in the later period.
Disclosure of Invention
The embodiment of the utility model provides a refrigerator main control board and a refrigerator, which are used for reducing circuit debugging cost when time sequence control is carried out on functional modules of the refrigerator.
The utility model provides a main control board of a refrigerator, which comprises:
the first control unit is connected with the power supply and is used for providing a control signal for a first load in the refrigerator;
a second control unit for providing a control signal for a second load in the refrigerator;
the first end of the switch unit is connected with the power supply, and the second end of the switch unit is connected with the second control unit;
and the time sequence control unit is used for controlling the on or off of the switch unit according to a preset time sequence.
Optionally, the switching unit includes:
the grid electrode of the first field effect tube is used as the control end of the switch unit to be connected with the output end of the time sequence control unit, the source electrode of the first field effect tube is used as the first end of the switch unit to be connected with the power supply, and the drain electrode of the first field effect tube is used as the second end of the switch unit to be connected with the second control unit;
the first end of the first resistor is connected with the grid electrode of the first field effect tube, and the second end of the first resistor is connected with the source stage of the first field effect tube.
Optionally, the timing control unit includes:
the first end of the second resistor is connected with the power supply;
the first end of the first capacitor is connected with the second end of the second resistor;
and the input end of the inverter is connected with the second end of the second resistor, and the output end of the inverter is connected with the control end of the switch unit and is used for outputting a time sequence signal to the switch unit.
Optionally, the first field effect transistor is a MOS field effect transistor.
Optionally, the first field effect transistor is a P-channel enhancement type MOS field effect transistor.
Optionally, the inverter is a CMOS inverter.
Optionally, an output end of the CMOS inverter is connected to a control end of the switching unit, and is used for controlling on or off of the switching unit.
Optionally, a first end of the first control unit is connected with a power supply, a second end of the first control unit is connected with the first load, and the first load is powered through the first control unit;
the first end of the second control unit is connected with the switch unit, the switch unit is connected with the time sequence control unit, and the second load is powered according to a preset time sequence through the time sequence control unit.
Optionally, the first load is a communication unit, and the second load is a compressor.
The utility model provides a refrigerator, which comprises the main control board of the refrigerator.
In this embodiment, a main control board of a refrigerator and a refrigerator are provided, where the main control board of a refrigerator includes a first control unit, a second control unit, a switch unit and a timing control unit, where the first control unit is used to provide a control signal for a first load in the refrigerator, the second control unit is used to provide a control signal for a second load in the refrigerator, a first end of the switch unit is connected with a power supply, a second end of the switch unit is connected with the second control unit, the control end of the switch unit is connected with the timing control unit, and the timing control unit is used to control on or off of the switch unit, so as to control the second control unit to conduct on or off according to a preset timing, and perform timing control on the second load.
Other features and advantages of the utility model will be apparent from the following detailed description, or may be learned by the practice of the utility model.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.
Drawings
Fig. 1 schematically illustrates a structural schematic diagram of a main control board of a refrigerator according to an embodiment of the present utility model.
Fig. 2 schematically shows a circuit configuration diagram of a switching unit according to another embodiment of the present utility model.
Fig. 3 schematically shows a circuit configuration diagram of a timing control unit according to another embodiment of the present utility model.
Fig. 4 schematically illustrates a circuit structure of a main control board of a refrigerator according to another embodiment of the present utility model.
Fig. 5 schematically illustrates a structural diagram of a refrigerator according to another embodiment of the present utility model.
Reference numerals illustrate:
a refrigerator main control board 10, a refrigerator 20, a power supply 100, a first control unit 101, a first load 102, a time sequence control unit 200, a switch unit 300, a second control unit 103 and a second load 104;
the first resistor R1, the second resistor R2, the first capacitor C1, the first field effect transistor Q1 and the inverter U1.
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.
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 utility model. One skilled in the relevant art will recognize, however, that the utility model may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the utility model.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
In the embodiment of the utility model, as the functions of the refrigerator are gradually diversified, the control system of the refrigerator is complex, and the power supply of each functional module in the refrigerator needs to be controlled in time sequence. The general time sequence control circuit is mainly based on control in software, namely, the IO interface of the micro control unit is controlled to control the time sequence of the power supply of each functional module, so that each functional module is conducted according to a preset time sequence. This way, the chip control code of the micro control unit is added, which is subsequently disadvantageous for maintenance.
The refrigerator main control board provided by the embodiment of the utility model has a simple circuit structure, and comprises a first control unit, a second control unit, a time sequence control unit and a switch unit; the structure characteristic of the time sequence control unit corresponds to the generated circuit conduction characteristic, the time sequence pulse can perform time sequence control on the switch unit, so that the switch unit is turned on or off according to the preset time sequence, one end of the second control unit is connected with the switch unit, and the other end of the second control unit is connected with the second load, and therefore the time sequence control effect on the second control unit can be achieved.
The refrigerator main control board provided by the utility model is described in detail below with reference to specific embodiments.
Referring to fig. 1, fig. 1 schematically illustrates a schematic structural diagram of a main control board of a refrigerator according to an embodiment of the present utility model.
As shown in fig. 1, a main control board 10 of a refrigerator according to an embodiment of the present utility model includes:
a first control unit 101 connected to the power source 100, the first control unit 101 for providing a control signal to a first load 102 in the refrigerator;
a second control unit 103 for providing a control signal to a second load 104 in the refrigerator;
the switch unit 300 has a first end connected to the power supply 100 and a second end connected to the second control unit 103;
the input end of the time sequence control unit 200 is connected with the power supply 100, the output end of the time sequence control unit 200 is connected with the control end of the switch unit 300, and the time sequence control unit 200 is used for controlling the on or off of the switch unit 300 according to a preset time sequence.
Specifically, one end of the first control unit 101 is connected to the power supply 100, the other end of the first control unit 101 is connected to the first load 102 in the refrigerator, and the first control unit 101 is configured to provide a control signal for the first load 102.
The input end of the timing control unit 200 is connected with the power supply 100, the output end is connected with the switch unit 300, the other end of the switch unit 300 is connected with the second control unit 103, and the other end of the second control unit 103 is connected with the second load 104 in the refrigerator.
The second control unit 103 is configured to provide a control signal to the second load 104.
The power supply 100 supplies power to the timing control unit 200, and the circuit structure of the timing control unit 200 is capable of generating a timing pulse signal according to which the switching unit 300 is turned on and off. The high level and the low level of the timing pulse signal are replaced in timing, so that the switching unit 300 is turned on or off in timing.
The power supply 100 outputs a 5V current to supply power to the first control unit 101 and the second control unit 103.
The first load 102, the second load 104 are different functional modules in the refrigerator. The first load 102 is connected with the first control unit 101, and the first control unit 101 provides a control signal to control the first load 102 and realize a function corresponding to the first load 102; the second load 104 is connected to the second control unit 103, and the second control unit 103 provides a control signal to control the second load 104 so as to realize a function corresponding to the second load 104.
In the present embodiment, in order to enable the second load 104 to operate in the initially set operation state during operation, it is necessary to perform timing control.
Optionally, the first control unit 101 in the embodiment of the present utility model is a main control unit, where the main control unit supplies power to a main load, so as to ensure the normal operation of the overall function of the refrigerator. The second control unit 103 is a variable frequency control unit, which provides control signals for the variable frequency load.
The refrigerator main control board provided by the embodiment comprises a first control unit 101, a second control unit 103, a switch unit 300 and a timing control unit 200, wherein the first control unit 101 is used for providing a control signal for a first load 102 in a refrigerator, the second control unit 103 is used for providing a control signal for a second load 104 in the refrigerator, a first end of the switch unit 300 is connected with a power supply 100, a second end of the switch unit 300 is connected with the second control unit 103, a control end of the switch unit 300 is connected with the timing control unit 200, the timing control unit 200 is used for controlling the switch unit 300 to be turned on or off, so that the second control unit 103 is controlled to be turned on or off according to a preset timing sequence, and the timing control unit 200 can generate the timing signal to further play a role of timing control on the switch unit 300. The refrigerator main control board circuit provided by the embodiment of the utility model has a simple structure, and only controls the second control unit 103 through the time sequence control unit 200 and the switch unit 300, so that the debugging cost of a hardware circuit is reduced when the hardware circuit is debugged.
Fig. 2 shows a schematic circuit diagram of a switching unit according to an embodiment of the present utility model. As shown in fig. 2, the switching unit 300 includes:
the first field effect transistor Q1, the grid electrode of the first field effect transistor Q1 is used as the control end of the switch unit 300 to be connected with the output end of the time sequence control unit 200, the source electrode of the first field effect transistor Q1 is used as the first end of the switch unit 300 to be connected with the power supply 100, and the drain electrode of the first field effect transistor Q1 is used as the second end of the switch unit 300 to be connected with the second control unit 103;
the first end of the first resistor R1 is connected with the grid electrode of the first field effect tube Q1, and the second end of the first resistor R1 is connected with the source stage of the first field effect tube Q1.
Specifically, the first end of the switching unit 300 is connected to the power supply 100, the second end is connected to the second control unit 103, and the control end of the switching unit 300 is connected to the timing control unit 200.
The switch unit 300 is composed of a first field effect transistor Q1 and a first resistor R1, a gate of the first field effect transistor Q1 is connected to an output end of the timing control unit 200, a source of the first field effect transistor Q1 is connected to the power supply 100, and a drain of the first field effect transistor Q1 is connected to the second control unit 103.
The first end of the first resistor R1 is connected with the grid electrode of the first field effect tube Q1, and the second end of the first resistor R1 is connected with the source stage of the first field effect tube Q1.
The first fet Q1 is turned on by the voltage between the source and the gate as a switch between the turn-on timing control unit 200 and the second control unit 103.
The first resistor R1 is used for ensuring that the voltage between the source electrode and the gate electrode of the first field effect transistor Q1 is consistent, so that the first field effect transistor Q1 works normally.
For example, if the output terminal of the timing control unit 200 has no output voltage, the voltage between the source and the gate of the first fet Q1 is 0V, and the first fet Q1 is not turned on.
In this embodiment, the switch unit 300 is composed of the first field effect transistor Q1 and the first resistor R1, and the bridge for switching on the timing control unit 200 and the second control unit 103 is formed by the first field effect transistor Q1 and the first resistor R1, so that the circuit structure is simple, the number of used elements is small, the difficulty of circuit debugging is effectively reduced, and the production cost is reduced.
Fig. 3 is a schematic circuit diagram of a timing control unit according to an embodiment of the present utility model. As shown in fig. 3, the timing control unit 200 includes:
the first end of the second resistor R2 is connected with the power supply 100;
the first end of the first capacitor C1 is connected with the second end of the second resistor R2;
and an input end of the inverter U1 is connected with a second end of the second resistor R2, and an output end of the inverter U1 is connected with a control end of the switch unit 300 and is used for outputting a time sequence signal to the switch unit 300.
Specifically, the timing control unit 200 is composed of a second resistor R2, a first capacitor C1, and an inverter U1.
The first end of the second resistor R2 is connected with the power supply 100, the second end of the second resistor R2 is connected with the first end of the first capacitor C1, and the second end of the first capacitor C1 is grounded.
The second end of the second resistor R2 is connected to the first end of the first capacitor C1, and then connected to the input end of the inverter U1, and the output end of the inverter U1 is connected to the control end of the switching unit 300.
The power supply 100 outputs a voltage of 5V, charges the first capacitor C1 through the second resistor R2, and forms a delay time by the time of charging the first capacitor C1, and the time of charging the first capacitor C1 from 0 to the reverse voltage reaching the inverter U1 is the time of turning on the delay switching unit 300.
For example, when the threshold of the output of the inverter U1, which is inverted from high to low, is 0.8V and the time for charging the first capacitor C1 from 0V to 0.8V is T, the on time of the switching unit 300 is T.
Specifically, T may be calculated according to the following formula:
T＝RC*Ln[(V1-V0)/(V1-Vt)]
wherein T is the time for charging the capacitor. R is the resistance value of the second resistor R2, C is the capacitance value of the first capacitor C1, V1 is the voltage value of the first capacitor C1 which can be charged or discharged finally, vt is the voltage value of the first capacitor C1 at the moment t, and V0 is the initial voltage value of the first capacitor C1.
Optionally, the charging time T of the capacitor may be adjusted by changing the element values of the second resistor R2 and the first capacitor C1.
As is known from the input characteristics of the inverter U1, when the voltage at the input terminal of the inverter U1 is between 0V and 0.8V, the output terminal of the inverter U1 is at a high level, and the output voltage is 0V, and at this time, the voltage at the control terminal of the switching unit 300 is 0V, which indicates that the switching unit 300 is not turned on. When the voltage at the input terminal of the inverter U1 is greater than 0.8V, the input terminal of the inverter U1 is at a low level, and the voltage at the control terminal of the switching unit 300 is 0.8V, the switching unit 300 is turned on.
Fig. 4 shows a schematic circuit structure of a main control board of a refrigerator according to an embodiment of the present utility model. As shown in fig. 4, the refrigerator main control board 10 is composed of a first control unit 101, a second control unit 103, a timing control unit 200, and a switching unit 300.
The timing control unit 200 includes a second resistor R2, a first capacitor C1, and an inverter U1, and the switch unit 300 includes a first field effect transistor Q1 and a first resistor R1.
One end of the timing control unit 200 is connected to the power supply 100, the other end is connected to the switching unit 300, and the other end of the switching unit 300 is connected to the second control unit 103.
The output end of the inverter U1 is connected with the grid electrode of the first field effect transistor Q1. When the voltage at the input end of the inverter U1 is between 0V and 0.8V, the output end of the inverter U1 is at a high level, the output voltage is 0V, and at this time, the source gate voltage of the first field effect transistor Q1 is 0V, which is smaller than the threshold voltage of the first field effect transistor Q1, so that the first field effect transistor Q1 is not turned on. When the voltage at the input end of the inverter U1 is greater than 0.8V, the input end of the inverter U1 is at a low level, and the source gate voltage of the first fet Q1 is greater than the threshold voltage, so that the first fet Q1 is turned on. The time from when the first fet Q1 is not turned on to when the first fet Q1 is turned on is the delayed on time of the second control unit 103, and the second control unit 103 is time-sequentially controlled based on the charging characteristic of the first capacitor C1.
In the present embodiment, the second resistor R2 and the first capacitor C1 are provided, and the delayed turn-on of the second control unit 103 is controlled according to the charging characteristic of the RC circuit, which plays a role in timing control of the second control unit 103.
Optionally, the first field effect transistor Q1 is a MOS field effect transistor.
Specifically, the MOS field effect transistor is an insulated gate field effect transistor, the voltage output by the power supply 100 in the embodiment of the present utility model is 5V, and the source of the first field effect transistor Q1 is connected to the power supply 100 to play a driving role. The MOS field effect transistor is a voltage control type element due to the structural characteristics of the MOS field effect transistor, and the MOS field effect transistor can be used as a switching element by controlling the voltage of each end of the MOS field effect transistor.
In this embodiment, the first field effect transistor Q1 is a MOS field effect transistor, the on characteristic of which can be used as a switching element, and which is controlled by a voltage, and the voltage output by the timing control unit 200 can control the first field effect transistor Q1 to be turned on or off.
Optionally, the first fet Q1 is a P-channel enhancement MOS fet.
Specifically, the P-channel enhancement type MOS field effect transistor is a P-channel enhancement type MOS field effect transistor.
Alternatively, the inverter U1 is a CMOS inverter.
Specifically, the inverter U1 functions to change the phase of the input signal by 180 degrees.
In the embodiment of the present utility model, the inverter U1 is used to invert the input level correspondingly, invert the high level to the low level, and invert the low level to the high level.
The CMOS inverter is composed of PMOS field effect transistor and NMOS field effect transistor in symmetrical and complementary mode. In this embodiment, the inverter U1 is selected as a logic unit, and a timing signal is generated by combining the structures of the first capacitor C1 and the second resistor R2 to perform timing control on the second control unit 103.
In the present embodiment, by adopting a CMOS inverter as a logic circuit, turning on or off the second control unit 103 according to a preset timing is realized in combination with the characteristic of level inversion.
Optionally, an output terminal of the CMOS inverter is connected to a control terminal of the switching unit 300, for controlling on or off of the switching unit 300.
Specifically, the output terminal of the inverter U1 is connected to the control terminal of the switching unit 300, and is used to control the switching unit 300 to be turned on or off.
Optionally, a first end of the first control unit 101 is connected to the power supply 100, a second end of the first control unit 101 is connected to the first load 102, and power is supplied to the first load 102 through the first control unit 101;
the first end of the second control unit 103 is connected to the switching unit 300, the switching unit 300 is connected to the timing control unit 200, and the second load 104 is powered according to a preset timing through the timing control unit 200.
Specifically, the first control unit 101 has a first end connected to the power supply 100 and a second end connected to the first load 102, and the first control unit 101 supplies power to the first load 102 while providing a control signal to the first load 102.
The first terminal of the second control unit 103 is connected to the switch unit 300, the switch unit 300 is connected to the timing control unit 200, and the timing control unit 200 is capable of outputting a timing control signal, so that the second load 104 receives the timing control of the timing control unit 200.
In the present embodiment, the timing control can be performed on the power supply time of different loads without outputting a control signal to the IO interface of the second control unit 103, that is, by the timing control unit 200. The circuit structure of the time sequence control unit 200 is simple, and the debugging difficulty can be effectively reduced when the circuit is debugged.
Optionally, the first load 102 is a communication unit and the second load 104 is a compressor.
As an alternative embodiment, the first load 102 is a communication unit in the refrigerator, the first control unit 101 is a main control MCU (micro control unit), one end of the first control unit 101 is connected to the power supply 100, the other end of the first control unit 101 is connected to the communication unit, and the main control MCU supplies power to the communication unit and provides a control signal to the communication unit.
The second load 104 is a compressor of the refrigerator, and the second control unit 103 is a variable frequency MCU, which is used for adjusting the operation frequency of the compressor according to the signal of the controller. One end of the second control unit 103 is connected to the timing control unit 200 and the switching unit 300, and the timing control unit 200 and the switching unit 300 control the conduction of the second load 104 in a timing manner.
In this embodiment, the first load 102 is a communication unit, the second load 104 is a compressor, and the communication unit is required to be kept in a conductive state all the time, so that the connection timing control unit 200 is not required to perform timing control. The compressor is used as the second load 104, and needs to be connected with the time sequence control unit 200, and the time sequence control unit 200 can control the on time sequence of the compressor, so that the compressor can be kept in a set initial state when in operation, and the overall operation effect of the refrigerator is ensured.
Fig. 5 schematically illustrates a schematic structure of a refrigerator provided by an embodiment of the present utility model. As shown in fig. 5, an embodiment of the present utility model provides a refrigerator, and the refrigerator 20 includes the main control board 10 of the refrigerator provided in the above embodiment.
As shown in fig. 5, the main control board 10 of the refrigerator includes a first control unit 101, a second control unit 103, a switching unit 300, and a timing control unit 200;
one end of the first control unit 101 is connected with a power supply, and the other end is connected with the first load 102;
the second control unit 103 has one end connected to the second load 104, and the other end connected to the timing control unit 200 and the switching unit 300, where the timing control unit 200 can provide a timing signal for controlling the switching unit 300 to be turned on or off, so as to control the timing of the second load 104.
It will be clearly understood by 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 functions may be allocated to different functional units and modules as needed.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with other technical solutions, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and all the modifications or replacements are included in the protection scope of the present utility model.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains.
It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (10)
1. A refrigerator main control board, which is characterized by comprising:
the first control unit is connected with the power supply and is used for providing a control signal for a first load in the refrigerator;
a second control unit for providing a control signal for a second load in the refrigerator;
the first end of the switch unit is connected with the power supply, and the second end of the switch unit is connected with the second control unit;
and the time sequence control unit is used for controlling the on or off of the switch unit according to a preset time sequence.
2. The main control board of refrigerator according to claim 1, wherein the switching unit comprises:
the grid electrode of the first field effect tube is used as the control end of the switch unit to be connected with the output end of the time sequence control unit, the source electrode of the first field effect tube is used as the first end of the switch unit to be connected with the power supply, and the drain electrode of the first field effect tube is used as the second end of the switch unit to be connected with the second control unit;
the first end of the first resistor is connected with the grid electrode of the first field effect tube, and the second end of the first resistor is connected with the source stage of the first field effect tube.
3. The refrigerator main control board according to claim 1, wherein the timing control unit comprises:
the first end of the second resistor is connected with the power supply;
the first end of the first capacitor is connected with the second end of the second resistor;
and the input end of the inverter is connected with the second end of the second resistor, and the output end of the inverter is connected with the control end of the switch unit and is used for outputting a time sequence signal to the switch unit.
4. The refrigerator main control panel of claim 2, wherein the first field effect transistor is a MOS field effect transistor.
5. The refrigerator main control panel of claim 4, wherein the first field effect transistor is a P-channel enhancement type MOS field effect transistor.
6. The refrigerator main control panel of claim 3, wherein the inverter is a CMOS inverter.
7. The refrigerator main control panel of claim 6, comprising:
the output end of the CMOS inverter is connected with the control end of the switch unit and used for controlling the on or off of the switch unit.
8. The refrigerator main control board according to claim 1, comprising:
the first end of the first control unit is connected with a power supply, the second end of the first control unit is connected with the first load, and the first load is powered through the first control unit;
the first end of the second control unit is connected with the switch unit, the switch unit is connected with the time sequence control unit, and the second load is powered according to a preset time sequence through the time sequence control unit.
9. The refrigerator main control panel of claim 1, wherein the first load is a communication unit and the second load is a compressor.
10. A refrigerator, characterized in that it comprises a refrigerator main control board according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320192771.XU CN219550964U (en) | 2023-02-07 | 2023-02-07 | Refrigerator main control board and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320192771.XU CN219550964U (en) | 2023-02-07 | 2023-02-07 | Refrigerator main control board and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219550964U true CN219550964U (en) | 2023-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320192771.XU Active CN219550964U (en) | 2023-02-07 | 2023-02-07 | Refrigerator main control board and refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219550964U (en) |
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2023
- 2023-02-07 CN CN202320192771.XU patent/CN219550964U/en active Active
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