CN210669535U - 5V singlechip sampling power grid voltage circuit powered by BUCK circuit - Google Patents
5V singlechip sampling power grid voltage circuit powered by BUCK circuit Download PDFInfo
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- CN210669535U CN210669535U CN201921996368.2U CN201921996368U CN210669535U CN 210669535 U CN210669535 U CN 210669535U CN 201921996368 U CN201921996368 U CN 201921996368U CN 210669535 U CN210669535 U CN 210669535U
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Abstract
The utility model discloses a BUCK circuit power supply 5V singlechip sampling grid voltage circuit, including commercial power loading end ACL1, commercial power loading end ACL2, chip U1 and singlechip MCU1, commercial power loading end ACL1 concatenates behind resistance wire FUSE1, connects respectively in resistance R1 and diode D5, commercial power loading end ACL2 and direct current 5V connect in chip U1's 5 feet, after resistance R1 concatenates diode D1 and inductance L1, connect in chip U1's 5 feet, diode D5 concatenates behind resistance R14, resistance R15 and resistance R16, connect respectively in 11 feet of resistance R17 and singlechip MCU 1. The circuit for sampling the voltage of the power grid by the 5V singlechip powered by the BUCK circuit is reasonable and complete in circuit design.
Description
Technical Field
The utility model relates to a switching power supply circuit technical field specifically is a BUCK circuit power supply 5V singlechip sample grid voltage circuit.
Background
The output problem of load power is affected due to the difference of the voltage of the mains supply. The current load switch power supply circuit has design defects, so that the circuit cannot correctly read the voltage of a power grid, a main control unit cannot correctly control the load power, and the phenomenon of unstable load power output occurs.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a BUCK circuit power supply 5V singlechip sample grid voltage circuit, way reasonable in design, perfect, read the size of input value through singlechip MCU1, judge grid voltage's size, it carries out the function control effect to recycle singlechip MCU1, and through judging commercial power voltage height difference, control load output different power, thereby it is stable when making load output different power, can solve the problem among the prior art.
In order to achieve the above object, the utility model provides a following technical scheme: A5V single-chip microcomputer sampling power grid voltage circuit powered by a BUCK circuit comprises a mains supply loading end ACL1, a mains supply loading end ACL2, a chip U1 and a single-chip microcomputer MCU1, wherein the mains supply loading end ACL1 is connected with a resistance wire FUSE1 in series and then is respectively connected with a resistor R1 and a diode D5, the mains supply loading end ACL2 and a direct current 5V are connected with a pin 5 of the chip U1, the resistor R1 is connected with a diode D1 and an inductor L1 in series and then is connected with a pin 5 of the chip U1, the diode D5 is connected with a resistor R14, a resistor R15 and a resistor R16 in series and then is respectively connected with a pin 11 of a resistor R17 and a single-chip microcomputer MCU1, both ends of the resistor R17 are connected with an electrolytic capacitor EC7 in parallel, and a pin 11 circuit interface of the single-chip; the 3 pins of the chip U1 are respectively connected to a capacitor C3, an inductor L2 and a diode D3, the capacitor C3 is connected in series with the diode D2 and then connected to DC 5V together with the inductor L2, and the diode D3 is connected in series with the resistor R5 and then connected to DC 5V.
Preferably, the diode D5 is a rectifier diode of type IN 4007.
Preferably, the diode D6 is a switching diode of type IN 4148.
Preferably, the resistances of the resistor R14, the resistor R15 and the resistor R16 are all 100K/1206.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the BUCK circuit supplies power to a 5V singlechip sampling power grid voltage circuit, an electric supply loading end ACL1 is rectified through a diode D5, and after voltage division is carried out on a resistor R14, a resistor R15, a resistor R16 and a resistor R17, a voltage source smaller than 5V is output after filtering is carried out through an electrolytic capacitor EC7, so that the voltage source is read by a pin 11 of a singlechip MCU 1; when the voltage of the commercial power loading end ACL1 and the voltage of the commercial power loading end ACL2 are different, the value read by the 11 pins of the single-chip microcomputer MCU1 is different, the voltage of the power grid is judged by the read value, the function regulation function is carried out by the single-chip microcomputer MCU1, and the load is controlled to output different powers by judging the voltage difference of the commercial power, so that the load is stable when outputting different powers.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a 5V single chip microcomputer sampling grid voltage circuit powered by a BUCK circuit includes a mains load end ACL1, a mains load end ACL2, a chip U1 and a single chip microcomputer MCU1, wherein the mains load end ACL1 is connected in series with a resistance wire FUSE1 and then connected to a resistor R1 and a diode D5, the mains load end ACL2 and a direct current 5V are connected to a pin 5 of a chip U1, the resistor R1 is connected in series with a diode D1 and an inductor L1 and then connected to a pin 5 of a chip U1, the diode D5 is connected in series with a resistor R14, a resistor R15 and a resistor R16 and then connected to a pin 11 of a resistor R17 and a MCU single chip microcomputer 1, and electrolytic capacitors EC7 are connected in parallel to both ends of a resistor R17; because the diode D5 is a rectifier diode of model IN4007, the diode D6 is a switch diode of model IN4148, and the resistances of the resistor R14, the resistor R15 and the resistor R16 are all 100K/1206, the utility power loading terminal ACL1 is rectified by the diode D5, and after voltage division is performed on the resistor R14, the resistor R15, the resistor R16 and the resistor R17, the voltage is filtered by the electrolytic capacitor EC7, and a voltage source smaller than 5V is output, so that the voltage source is read by the 11 pins of the single-chip microcomputer 1; the 11-pin circuit interface of the singlechip MCU1 is also connected with a diode D6 in series and then connected with direct current 5V; the diode D6 plays a role in clamping voltage, so that the port of the MCU1 of the single chip microcomputer is protected from being damaged by high voltage; the 3 pins of the chip U1 are respectively connected to a capacitor C3, an inductor L2 and a diode D3, the capacitor C3 is connected in series with the diode D2 and then connected to DC 5V together with the inductor L2, and the diode D3 is connected in series with the resistor R5 and then connected to DC 5V.
The BUCK circuit supplies power to a 5V singlechip sampling power grid voltage circuit, an electric supply loading end ACL1 is rectified through a diode D5, and after voltage division is carried out on a resistor R14, a resistor R15, a resistor R16 and a resistor R17, a voltage source smaller than 5V is output after filtering is carried out through an electrolytic capacitor EC7, so that the voltage source is read by a pin 11 of a singlechip MCU 1; when the voltage of the commercial power loading end ACL1 and the voltage of the commercial power loading end ACL2 are different, the value read by the 11 pins of the single-chip microcomputer MCU1 is different, the voltage of the power grid is judged by the read value, the function regulation function is carried out by the single-chip microcomputer MCU1, and the load is controlled to output different powers by judging the voltage difference of the commercial power, so that the load is stable when outputting different powers.
In summary, the following steps: this BUCK circuit power supply 5V singlechip sampling grid voltage circuit, circuit design is reasonable, perfect, read the size of input value through singlechip MCU1, judge grid voltage's size, reuse singlechip MCU1 and carry out the function control effect, and through judging commercial power voltage height difference, control load output different power, thereby it is stable when making load output different power, therefore effectively solve prior art problem.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a BUCK circuit power supply 5V singlechip sampling grid voltage circuit, includes commercial power loading end ACL1, commercial power loading end ACL2, chip U1 and singlechip MCU1, its characterized in that: the electric supply loading end ACL1 is connected with a resistance wire FUSE1 in series and then is respectively connected with a resistor R1 and a diode D5, the electric supply loading end ACL2 and direct current 5V are connected with a pin 5 of a chip U1, a resistor R1 is connected with a diode D1 and an inductor L1 in series and then is connected with a pin 5 of a chip U1, the diode D5 is connected with a resistor R14, a resistor R15 and a resistor R16 in series and then is respectively connected with a resistor R17 and a pin 11 of a singlechip MCU1, two ends of the resistor R17 are connected with an electrolytic capacitor EC7 in parallel, and a pin 11 circuit interface of the singlechip MCU1 is also connected with a diode D6 in series and then is connected with direct current 5; the 3 pins of the chip U1 are respectively connected to a capacitor C3, an inductor L2 and a diode D3, the capacitor C3 is connected in series with the diode D2 and then connected to DC 5V together with the inductor L2, and the diode D3 is connected in series with the resistor R5 and then connected to DC 5V.
2. The circuit of claim 1, wherein the circuit comprises a BUCK circuit for supplying 5V singlechip for sampling the voltage of the power grid, and is characterized in that: the diode D5 is a rectifier diode of type IN 4007.
3. The circuit of claim 1, wherein the circuit comprises a BUCK circuit for supplying 5V singlechip for sampling the voltage of the power grid, and is characterized in that: the diode D6 is a switching diode model IN 4148.
4. The circuit of claim 1, wherein the circuit comprises a BUCK circuit for supplying 5V singlechip for sampling the voltage of the power grid, and is characterized in that: the resistances of the resistor R14, the resistor R15 and the resistor R16 are all 100K/1206.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921996368.2U CN210669535U (en) | 2019-11-19 | 2019-11-19 | 5V singlechip sampling power grid voltage circuit powered by BUCK circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921996368.2U CN210669535U (en) | 2019-11-19 | 2019-11-19 | 5V singlechip sampling power grid voltage circuit powered by BUCK circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210669535U true CN210669535U (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921996368.2U Active CN210669535U (en) | 2019-11-19 | 2019-11-19 | 5V singlechip sampling power grid voltage circuit powered by BUCK circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210669535U (en) |
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2019
- 2019-11-19 CN CN201921996368.2U patent/CN210669535U/en active Active
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