CN219436888U - Circuit for reducing standby power consumption of main transformer integrated refrigerator through optocoupler and MOS tube - Google Patents
Circuit for reducing standby power consumption of main transformer integrated refrigerator through optocoupler and MOS tube Download PDFInfo
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- CN219436888U CN219436888U CN202320319815.0U CN202320319815U CN219436888U CN 219436888 U CN219436888 U CN 219436888U CN 202320319815 U CN202320319815 U CN 202320319815U CN 219436888 U CN219436888 U CN 219436888U
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- optocoupler
- mos tube
- circuit
- variable frequency
- power supply
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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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a circuit for reducing standby power consumption of a main transformer integrated refrigerator through an optocoupler and an MOS tube, which comprises a rectification filter module, an AC/DC power supply, a main control MCU part, a BUCK power supply and a variable frequency MCU part, wherein the rectification filter module is respectively connected with the AC/DC power supply and the BUCK power supply, the AC/DC power supply is connected with the main control MCU part, and the BUCK power supply is connected with the variable frequency MCU part and further comprises the following components: optocoupler U1, MOS pipe P1, voltage stabilizing tube ZD1, resistance R2, resistance R3. According to the utility model, when the variable frequency press does not need to be started, the U11/2 pin of the optocoupler does not form a passage, at the moment, the grid-source VGS of the MOS tube P1 is not in pressure difference, the MOS tube P1 is not conducted, and the variable frequency MCU and the back-end circuit are not electrified; when the variable frequency press is required to start, the main control MCU controls the pins U11/2 to form a passage, the pins U13/4 of the optocoupler receive signals, the grid electrode-source electrode VGS of the MOS tube P1 forms a pressure difference, the MOS tube P1 is conducted to supply power to the variable frequency MCU and the rear-end circuit, and the press can start according to working conditions.
Description
Technical Field
The utility model relates to the technical field of household appliances, in particular to a circuit for reducing standby power consumption of a main transformer integrated refrigerator through an optocoupler and an MOS tube.
Background
The main control part and the variable frequency part of the main transformer integrated board of the existing refrigerator are basically separately powered (as shown in figure 2). The main control part is powered by AC-DC (isolated power supply), and the frequency conversion part is powered by BUCK (non-isolated power supply).
When the work is needed, the main control MCU is communicated with the variable frequency MCU, and the variable frequency MCU drives the variable frequency motor; when the variable frequency press does not need to work, the variable frequency MCU and the bridge driving chip still have standby current, and standby power consumption can be caused.
Disclosure of Invention
The utility model aims to provide a circuit for reducing standby power consumption of a main transformer integrated refrigerator through an optocoupler and an MOS tube, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the circuit for reducing standby power consumption of the main transformer integrated refrigerator through the optocoupler and the MOS tube comprises a rectifying and filtering module, an AC/DC power supply, a main control MCU part, a BUCK power supply and a variable frequency MCU part, wherein the rectifying and filtering module is respectively connected with the AC/DC power supply and the BUCK power supply, the AC/DC power supply is connected with the main control MCU part, the BUCK power supply is connected with the variable frequency MCU part,
further comprises: optocoupler U1, MOS pipe P1, voltage stabilizing tube ZD1, resistance R2, resistance R3.
Preferably, the R1 is an optocoupler current limiting resistor, and the resistors R2 and R3 are bias resistors.
Preferably, the voltage regulator tube ZD1 is a voltage regulator diode.
Preferably, the MOS transistor P1 is a P-channel MOS transistor.
Compared with the prior art, the utility model has the beneficial effects that:
an optocoupler U1 (optocoupler 817), a MOS tube P1 (P-channel MOS tube), a resistor R1, a resistor R2, a resistor R3 and a voltage stabilizing tube ZD1 are added; when the variable frequency press does not need to be started, the U11/2 pin of the optocoupler does not form a passage, at the moment, the grid-source VGS of the MOS tube P1 has no pressure difference, the MOS tube P1 is not conducted, and the variable frequency MCU and the back-end circuit are not electrified; when the variable frequency press is required to start, the main control MCU controls the pins U11/2 to form a passage, the pins U13/4 of the optocoupler receive signals, the grid electrode-source electrode VGS of the MOS tube P1 forms a pressure difference, the MOS tube P1 is conducted to supply power to the variable frequency MCU and the rear-end circuit, and the press can start according to working conditions.
R1 is an optocoupler current limiting resistor, a resistor R2 and a resistor R3 are bias resistors, so that a proper voltage difference is formed between a grid electrode and a source electrode VGS of the MOS tube P1; the diode ZD1 is a zener diode to protect the MOS transistor P1 from the VGS voltage being too high when being disturbed.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of a prior art structure.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Referring to fig. 1, in an embodiment of the present utility model, a circuit for reducing standby power consumption of a main transformer integrated refrigerator through an optocoupler and a MOS transistor includes a rectifying and filtering module, an AC/DC power supply, a main control MCU portion, a BUCK power supply and a variable frequency MCU portion, where the rectifying and filtering module is connected to the AC/DC power supply and the BUCK power supply, the AC/DC power supply is connected to the main control MCU portion, the BUCK power supply is connected to the variable frequency MCU portion,
further comprises: optocoupler U1, MOS pipe P1, voltage stabilizing tube ZD1, resistance R2, resistance R3.
Preferably, the R1 is an optocoupler current limiting resistor, and the resistors R2 and R3 are bias resistors.
Preferably, the voltage regulator tube ZD1 is a voltage regulator diode.
Preferably, the MOS transistor P1 is a P-channel MOS transistor.
An optocoupler U1 (optocoupler 817), a MOS tube P1 (P-channel MOS tube), a resistor R1, a resistor R2, a resistor R3 and a voltage stabilizing tube ZD1 are added;
when the variable frequency press does not need to be started, the U11/2 pin of the optocoupler does not form a passage, at the moment, the grid-source VGS of the MOS tube P1 has no pressure difference, the MOS tube P1 is not conducted, and the variable frequency MCU and the back-end circuit are not electrified;
when the variable frequency press is required to start, the main control MCU controls the pins U11/2 to form a passage, the pins U13/4 of the optocoupler receive signals, the grid electrode-source electrode VGS of the MOS tube P1 forms a pressure difference, the MOS tube P1 is conducted to supply power to the variable frequency MCU and the rear-end circuit, and the press can start according to working conditions.
R1 is an optocoupler current limiting resistor, a resistor R2 and a resistor R3 are bias resistors, so that a proper voltage difference is formed between a grid electrode and a source electrode VGS of the MOS tube P1; the diode ZD1 is a zener diode to protect the MOS transistor P1 from the VGS voltage being too high when being disturbed.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (4)
1. The utility model provides a circuit that reduces integrative refrigerator stand-by power consumption of main transformer through opto-coupler and MOS pipe, includes rectification filter module, AC/DC power, master control MCU part, BUCK power and frequency conversion MCU part, rectification filter module is connected with AC/DC power and BUCK power respectively, AC/DC power is connected with master control MCU part, BUCK power is connected with frequency conversion MCU part, its characterized in that:
further comprises: optocoupler U1, MOS pipe P1, voltage stabilizing tube ZD1, resistance R2, resistance R3.
2. The circuit for reducing standby power consumption of a main transformer integrated refrigerator through an optocoupler and an MOS tube according to claim 1, wherein the circuit is characterized in that: and R1 is an optocoupler current limiting resistor, and the resistor R2 and the resistor R3 are bias resistors.
3. The circuit for reducing standby power consumption of a main transformer integrated refrigerator through an optocoupler and an MOS tube according to claim 1, wherein the circuit is characterized in that: the voltage stabilizing tube ZD1 is a voltage stabilizing diode.
4. The circuit for reducing standby power consumption of a main transformer integrated refrigerator through an optocoupler and an MOS tube according to claim 1, wherein the circuit is characterized in that: the MOS tube P1 is a P-channel MOS tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320319815.0U CN219436888U (en) | 2023-02-27 | 2023-02-27 | Circuit for reducing standby power consumption of main transformer integrated refrigerator through optocoupler and MOS tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320319815.0U CN219436888U (en) | 2023-02-27 | 2023-02-27 | Circuit for reducing standby power consumption of main transformer integrated refrigerator through optocoupler and MOS tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219436888U true CN219436888U (en) | 2023-07-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320319815.0U Active CN219436888U (en) | 2023-02-27 | 2023-02-27 | Circuit for reducing standby power consumption of main transformer integrated refrigerator through optocoupler and MOS tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219436888U (en) |
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2023
- 2023-02-27 CN CN202320319815.0U patent/CN219436888U/en active Active
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