I would like to ask: If a 1UF/400V capacitor is connected in parallel to a 220V AC circuit and a 3.6K/15W resistor is connected in parallel to a 220V AC circuit, are their power consumption (watt-hour...
Chapter 2 Overview of TMS320VC5402The most widely used DSPs in the industry are TI's TMS320 series DSPs. TMS320C5402 is a highly cost-effective fixed-point digital signal processor DSPs launched by TI...
If the microcontroller serial port and the driver module are placed on the same wire and the load is working, it will burn the microcontroller. What is the best communication method for this serial po...
Several ways of current sampling1. Use sampling resistors directly and ADC to measure the voltage drop on the resistor without processing circuits such as op amps. 2. Use sampling resistors and ADC to...
Taking advantage of the 0-yuan proofing opportunity of Jiali Chuang, I made a few PCB rulers by myself, as shown in the picture. I will send them to you free of charge. If you like them, you can send ...
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When SM2..0 is 001, the SLEEP instruction puts the MCU into noise suppression mode. In this mode, the CPU stops running, while the ADC, external interrupts, two-wire serial address match, timer/count...[Details]
Three-phase power supply is a commonly used power supply method in power systems. The so-called three-phase system is a power supply system composed of three power supplies with the same frequency ...[Details]
The interrupts in STM32 are divided into exceptions and interrupts. STM32 currently supports a total of 84 interrupts (16 cores + 68 external), 16 levels of programmable interrupt priority settings (...[Details]
1. Register R16 is used as CPSR (Current Program Status Register). CPSR can be accessed in any operating mode. It includes conditional flags, interrupt disable bits, current processor mode flags, and ...[Details]
Many IO ports have multiplexing functions. At the beginning, I only learned about the input and output to complete the functions of the keyboard and display. I used the DEMO of the experimental board ...[Details]
The latest research report released by Strategy Analytics pointed out that due to external political and economic factors, Lenovo's tablet shipments increased by 8 % year-on-year to 2.5 million units...[Details]
After understanding the general working principle of the microcontroller, we may have some questions about how the microcontroller reads instruction codes and data. This is the bus system. There...[Details]
This afternoon (31st), Huawei held a 2019 performance briefing. Huawei's rotating chairman Xu Zhijun said that as of now, Huawei has fully resumed work and production. The overseas epidemic is stil...[Details]
The so-called motor is an electrical component that converts electrical energy into mechanical energy. When electrical energy is converted into mechanical energy, the motor exhibits the working cha...[Details]
Clock driven triangle wave generator
U2, A, C3 form an integrator, Q2, Q3 switch alternately with a period of 256, U2-B, Q4, Q5 and R8-RL1 form a constant current generator, and RL1 is used...[Details]
The hardware environment used in this series is mini2440 from FriendlyArm and OpenJtag from Baiwen.com. All programs are compiled under linux gcc. For specific hardware settings and software environm...[Details]
Display applications have long been the main appeal of LED light-emitting components, and high heat dissipation is not required for LEDs. Therefore, most LEDs are directly packaged on general resi...[Details]
We all know that there are two major types of communication: serial and parallel. The biggest advantage of serial is that it occupies less bus, but the transmission rate is low; parallel is just the ...[Details]
February 17, 2022, Beijing, China - CH Robinson, a leading global third-party logistics technology and service provider, announced the opening of a new branch in Chaoyang District, Beijing, to furthe...[Details]
By the end of 2019, the number of uninterrupted power supply operations exceeded 2,000 times, and the number of steps and duration for users to apply for power supply was reduced by nearly 1/3, sav...[Details]