CN215268070U - Power supply circuit with single chip microcomputer isolation circuit - Google Patents
Power supply circuit with single chip microcomputer isolation circuit Download PDFInfo
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- CN215268070U CN215268070U CN202121352298.4U CN202121352298U CN215268070U CN 215268070 U CN215268070 U CN 215268070U CN 202121352298 U CN202121352298 U CN 202121352298U CN 215268070 U CN215268070 U CN 215268070U
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Abstract
The utility model relates to the technical field, and discloses a power supply circuit with a singlechip isolating circuit, which adopts the technical proposal that the power supply circuit comprises a main control circuit, the main control circuit comprises a main control chip, the main control circuit is used for processing input voltage signals and current signals and adjusting output in real time, a voltage sampling circuit, a current sampling circuit and an output circuit are respectively connected with pins of the main control chip of the main control circuit, after the voltage signals and the current signals are respectively input to the main control circuit through the voltage sampling circuit and the current sampling circuit and are isolated, the input voltage signals and the current signals are processed through the main control circuit, the output is adjusted in real time according to the magnitude of the input voltage signals and the current signals, the voltage signals and the current signals processed through the main control circuit are respectively output through the output circuit, and the isolation adjustment of output voltage and output current is realized, preventing interference to the switching power supply.
Description
Technical Field
The utility model relates to a singlechip keeps apart technical field, and more specifically the utility model relates to a take singlechip isolating circuit's supply circuit that says so.
Background
The AC-DC power supply is one of the switch power supplies, AC is alternating current, DC is direct current, the alternating current is reduced in voltage through a transformer and assigned, after being rectified by a rectifying circuit, pulsating direct current is obtained, then the direct current voltage with micro ripple voltage is obtained through a filter circuit, finally voltage stabilization is carried out through a voltage stabilizing circuit, products with power from several watts to several kilowatts are available, the AC-DC power supply is used for different occasions, direct regulation of the direct current output by a power supply chip can generate interference on the switch power supply, and the fault rate of the switch power supply can be increased.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a take singlechip buffer circuit's supply circuit keeps apart and adjusts output voltage, electric current, prevents to cause the interference to switching power supply.
In order to achieve the above purpose, the utility model provides a following technical scheme: a take singlechip isolating circuit's supply circuit includes:
the main control circuit comprises a main control chip and is used for processing input voltage signals and current signals and carrying out real-time regulation and output;
the voltage sampling circuit is used for inputting a voltage signal to the main control circuit;
the current sampling circuit is used for inputting a current signal to the main control circuit;
and the output circuit is used for outputting the voltage signal and the current signal processed by the main control circuit.
The voltage sampling circuit, the current sampling circuit and the output circuit are respectively connected with pins of a main control chip of the main control circuit.
As a further improvement, the power input pin of the main control chip of the main control circuit is connected with a power supply circuit, the power supply circuit is used for converting the high level voltage of the input into the operating voltage of the main control chip of the main control circuit.
As a further improvement of the present invention, the power supply circuit includes triode Q1 and zener diode IC2, zener diode IC 2's steady voltage end with triode Q1's base is connected, just zener diode IC 2's steady voltage end is connected with power supply circuit's input through resistance R6 and diode D1, zener diode IC 2's other end ground connection, triode Q1's output with power supply circuit's output is connected.
As a further improvement of the utility model, the current sampling circuit includes resistance R4, resistance R4's one end is connected with serial ports J3, resistance R4's the other end passes through resistance R5 ground connection, and resistance R4's the other end is connected master control circuit's main control chip's pin simultaneously.
As a further improvement of the utility model, the voltage sampling circuit includes resistance R1, resistance R1's one end is connected with serial ports J3, resistance R1's the other end passes through resistance R2 ground connection, and resistance R1's the other end is connected master control circuit's main control chip's pin simultaneously.
As a further improvement of the utility model, output circuit includes serial port J2, the PWM3 pin of main control chip of main control circuit is connected to serial port J2 through resistance R9 and resistance R10, the PWM1 pin of main control chip of main control circuit is connected to serial port J2 through resistance R11 and resistance R12.
The utility model has the advantages that: the utility model discloses a voltage sampling circuit and current sampling circuit are respectively with voltage signal and current signal input for main control circuit keep apart the back, handle the voltage signal and the current signal of input through main control circuit, carry out the output of adjusting in real time according to the voltage signal and the current signal's of input size, output voltage signal and current signal after handling main control circuit respectively through output circuit, realized isolation regulation output voltage and output current, prevent to cause the interference to the switch power supply.
Drawings
Fig. 1 is a schematic diagram of a system circuit connection structure of the present invention;
fig. 2 is a schematic circuit diagram of the main control circuit of the present invention;
fig. 3 is a schematic circuit diagram of the power supply circuit of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Referring to fig. 1, the power supply circuit with the single chip microcomputer isolation circuit of this embodiment includes a main control circuit, the main control circuit includes a main control chip, the main control circuit is configured to process an input voltage signal and an input current signal and perform real-time adjustment and output, a voltage sampling circuit is configured to input the voltage signal to the main control circuit, a current sampling circuit is configured to input the current signal to the main control circuit, an output circuit is configured to output the voltage signal and the current signal processed by the main control circuit, the voltage sampling circuit, the current sampling circuit, and the output circuit are respectively connected to pins of the main control chip of the main control circuit, the voltage signal and the current signal are respectively input to the main control circuit through the voltage sampling circuit and the current sampling circuit, after the voltage signal and the current signal are isolated by the main control circuit, the input voltage signal and the input current signal are processed by the main control circuit, and the real-time adjustment and output are performed according to the magnitude of the input voltage signal and the current signal, the voltage signal and the current signal processed by the main control circuit are respectively output through the output circuit, so that the isolation adjustment of the output voltage and the output current is realized, the interference to a switch power supply is prevented, a power supply circuit is connected to a power input pin of a main control chip of the main control circuit, and the power supply circuit is used for converting the input high level voltage into the operating voltage of the main control chip of the main control circuit.
Referring to fig. 3, the power supply circuit includes a transistor Q1 and a zener diode IC2, a voltage-stabilizing terminal of the zener diode IC2 is connected to a base of the transistor Q1, the voltage-stabilizing terminal of the zener diode IC2 is connected to an input terminal of the power supply circuit through a resistor R6 and a diode D1, the other terminal of the zener diode IC2 is grounded, an output terminal of the transistor Q1 is connected to an output terminal of the power supply circuit, the input terminal of the power supply circuit is connected to a 12V high-level voltage, and the output terminal of the power supply circuit outputs a 5V voltage for supplying power to the main control chip.
Referring to fig. 2, the current sampling circuit includes a resistor R4, one end of the resistor R4 is connected to a serial port J3, the other end of the resistor R4 is grounded through a resistor R5, the other end of the resistor R4 is connected to a pin of a main control chip of the main control circuit, a current signal is input through a serial port J3, the current signal is input to the pin of the main control chip after being divided by a resistor R4 and a resistor R5, a capacitor C2 is connected in parallel to two ends of the resistor R5, and the capacitor C2 is used for filtering and preventing interference.
The voltage sampling circuit comprises a resistor R1, one end of a resistor R1 is connected with a serial port J3, the other end of the resistor R1 is grounded through a resistor R2, meanwhile, the other end of the resistor R1 is connected with a pin of a main control chip of the main control circuit, a voltage signal is input through a serial port J3, the voltage is divided through a resistor R1 and a resistor R2 and then input into the pin of the main control chip, two ends of the resistor R2 are connected with a capacitor C1 in parallel, and the capacitor C1 is used for filtering and preventing interference.
The output circuit comprises a serial port J2, a PWM3 pin of a main control chip of the main control circuit is connected to the serial port J2 through a resistor R9 and a resistor R10, a PWM1 pin of the main control chip of the main control circuit is connected to the serial port J2 through a resistor R11 and a resistor R12, output current of a PWM3 pin is divided by a resistor R9 and a resistor R10 and then output to the serial port J2, and output voltage of a PWM1 pin is divided by a resistor R11 and a resistor R12 and then output to the serial port J2.
The working principle is as follows: the input end of the power supply circuit is connected with 12V high-level voltage, the output end of the power supply circuit outputs 5V voltage, the power supply circuit is used for supplying power to a main control chip, voltage signals and current signals are input into the main control circuit through the voltage sampling circuit and the current sampling circuit respectively and are isolated from each other, the input voltage signals and the input current signals are processed through the main control circuit, real-time adjustment and output are performed according to the size of the input voltage signals and the input current signals, the voltage signals and the current signals processed by the main control circuit are output through the output circuit respectively, isolation adjustment of output voltage and output current is achieved, and interference on a switch power supply is prevented.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a take singlechip isolating circuit's supply circuit which characterized in that: the method comprises the following steps:
the main control circuit comprises a main control chip and is used for processing input voltage signals and current signals and carrying out real-time regulation and output;
the voltage sampling circuit is used for inputting a voltage signal to the main control circuit;
the current sampling circuit is used for inputting a current signal to the main control circuit;
an output circuit for outputting the voltage signal and the current signal processed by the main control circuit,
the voltage sampling circuit, the current sampling circuit and the output circuit are respectively connected with pins of a main control chip of the main control circuit.
2. The power supply circuit with the single chip microcomputer isolation circuit as claimed in claim 1, wherein: the power supply circuit is connected to a power input pin of a main control chip of the main control circuit and used for converting an input high-level voltage into a working operating voltage of the main control chip of the main control circuit.
3. The power supply circuit with the single chip microcomputer isolation circuit as claimed in claim 2, wherein: the power supply circuit comprises a triode Q1 and a voltage stabilizing diode IC2, wherein the voltage stabilizing end of the voltage stabilizing diode IC2 is connected with the base electrode of the triode Q1, the voltage stabilizing end of the voltage stabilizing diode IC2 is connected with the input end of the power supply circuit through a resistor R6 and a diode D1, the other end of the voltage stabilizing diode IC2 is grounded, and the output end of the triode Q1 is connected with the output end of the power supply circuit.
4. The power supply circuit with the single chip microcomputer isolation circuit as claimed in claim 1, wherein: the current sampling circuit comprises a resistor R4, one end of the resistor R4 is connected with a serial port J3, the other end of the resistor R4 is grounded through a resistor R5, and meanwhile the other end of the resistor R4 is connected with a pin of a main control chip of the main control circuit.
5. The power supply circuit with the single chip microcomputer isolation circuit as claimed in claim 4, wherein: the voltage sampling circuit comprises a resistor R1, one end of the resistor R1 is connected with a serial port J3, the other end of the resistor R1 is grounded through a resistor R2, and meanwhile the other end of the resistor R1 is connected with a pin of a main control chip of the main control circuit.
6. The power supply circuit with the single chip microcomputer isolation circuit as claimed in claim 5, wherein: the output circuit comprises a serial port J2, a PWM3 pin of a main control chip of the main control circuit is connected to the serial port J2 through a resistor R9 and a resistor R10, and a PWM1 pin of the main control chip of the main control circuit is connected to the serial port J2 through a resistor R11 and a resistor R12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121352298.4U CN215268070U (en) | 2021-06-17 | 2021-06-17 | Power supply circuit with single chip microcomputer isolation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121352298.4U CN215268070U (en) | 2021-06-17 | 2021-06-17 | Power supply circuit with single chip microcomputer isolation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215268070U true CN215268070U (en) | 2021-12-21 |
Family
ID=79480557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121352298.4U Active CN215268070U (en) | 2021-06-17 | 2021-06-17 | Power supply circuit with single chip microcomputer isolation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215268070U (en) |
-
2021
- 2021-06-17 CN CN202121352298.4U patent/CN215268070U/en active Active
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