Design of single chip power supply (220v to 5v)
The power supply circuit uses the LM7805 integrated voltage regulator as the voltage regulator. In the typical connection method, the 220V power supply is rectified and filtered before being sent to the LM7805 for voltage regulation. A 470U and 0.1U capacitor is connected to the output end to further filter out the ripple and obtain a 5V voltage regulator. The circuit is shown in Figure 4.
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Recommended ReadingLatest update time:2024-11-16 15:26
What is mcu_mcu what does it mean
MCU (Micro Control Unit) is the Chinese name for micro control unit, also known as single chip microcomputer (Single Chip Microcomputer) or single chip microcomputer. It refers to the integration of computer CPU, RAM, ROM, timer counter and various I/O interfaces on a single chip with the emergence and development o
[Microcontroller]
Applying asymmetric dual-core MCU to enhance system performance
This article starts with a comparison between two discrete MCUs and a single-chip dual-core MCU (taking LPC4350 as an example), and then introduces the basic knowledge and important features of asymmetric dual-core MCUs. Next, the concept and several implementation methods of inter-core communication are introduced,
[Microcontroller]
PIC microcontroller application topic three: I2C reading and writing 24C02
Since I started learning microcontrollers, I have found I2C to be a very useful thing. It can greatly save our ports. Now I write the I2C program simulated by software, not only to share with you, but also to make a backup for myself. The following program uses I2C to store 24C02:
INCLUDE P16F5X.INC ; can also be u
[Microcontroller]
MCU controlled 28BYJ-48 stepper motor driver source code
The single chip microcomputer source program for controlling the 28BYJ-48 stepper motor driver is as follows: #include reg52.h #include intrins.h unsigned char CCW ={0x80,0xC0,0x40,0x60,0x20,0x30,0x10,0x90}; //Counter-clockwise rotation phase sequence table unsigned char CW ={0x90,0x10,0x30,0x20,0x60,0x40,0xC0,0
[Microcontroller]
Controlling LED Lights with a Microcontroller (Project)
#include reg52.h
#define uchar unsigned char
sbit LED_RED = P2^0;
sbit LED_GREEN = P2^1;
sbit LED_BLUE = P2^2;
//Color value to be displayed
float COLOR_RED = 0xff;
uchar COLOR_GREEN = 0xcc;
uchar COLOR_BLUE = 0x33;
fly i = 0;
//Initialize the time
[Microcontroller]
Application of USB interface chip SL811HS in 51 single-chip microcomputer system
1. Introduction
USB (Universal Serial Bus) is a new interface technology jointly proposed by INTEL, DEC, MI-CROSOFF, IBM and other companies, which has been gradually widely used in the PC field in recent years. The USB interface has good versatility, strong real-time performance, various transmission methods,
[Microcontroller]
Design of ultrasonic heat meter based on MSP430FW42X single chip microcomputer
1 System principle and structure of heat meter 1.1 Basic principle of heat meter Working principle of heat meter: heat meter is installed in the heat exchange system, and paired temperature sensors are installed on the heat exchange inlet and outlet pipes respectively. When water flows through the system, the flow se
[Microcontroller]
MCU timer (51 as an example)
The timer records what happens outside the microcontroller; the timer is a counter provided by the microcontroller itself. After the 51 microcontroller divides the frequency by 12, it only provides a 1MHZ pulse to the microcontroller, and the pulse time interval is 1 microsecond. MC51 is connected to an external 12M c
[Microcontroller]
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