Founded in 1981, Guanxi Electronics is a professional manufacturer of relays and optocouplers. Its main business operations include the production and sales of the following four categories of products: reed relays, solid-state relays, optocouplers, and electric relays.
I plan to measure the duty cycle of multiple PWM signals by extending the timer. I use the GATE gate bit to read the value of the external timer 8253 counter when GATE is low. But I can't read the val...
As the title says: UNICODE_STRING usDosName; PFILE_OBJECT pFileObject = IrpSp->fileObject; Use RtlVolumeDeviceToDosName(pFileObject->DeviceObject,&usDosName) to get the drive letter of usDosName, such...
[align=left]We have tested the basic functions of the IO port before. This time, let's try the timer interrupt of TC0, because the timer interrupt is used by almost every program and is also a relativ...
[i=s] This post was last edited by Mandy on 2014-12-13 19:48 [/i] [align=center][b][font=宋体][size=14.0pt]How to use the library provided by IAR For MSP430[/size][/font][font=宋体][size=14.0pt] to create...
[size=3]2015 has quietly gone, and 2016 has quietly arrived. [/size][size=3]A day's plan begins in the morning, so what should a year's plan begin with? [/size] [size=3]Does the 2016 goal list count? ...
Please tell me, how does a gas meter that uses Hall devices for measurement protect itself from strong magnetism? Also, is there one or two Hall devices inside it? How does it measure using Hall devic...
Power modules are favored by many engineers for their multiple advantages such as high integration, high reliability, and simplified design. However, even if the same power module is used, different ...[Details]
1 Introduction With the development of electronic technology, multi-frequency operation is becoming more and more common in radar, microwave, communication and other application systems, and the ...[Details]
As the manufacturing technology of LED products gradually matures, the cost is getting lower and lower, and the cost performance is getting higher and higher. At present, low-power LED products h...[Details]
Project 1: A power supply in a laboratory broke down. After disassembling it, it was found that the full bridge controlled by UC3875 needed to be repaired . Phenomenon: Preliminary inspection s...[Details]
Project: IR1150 PFC Phenomenon: During the high temperature test, the MOSFET shell temperature was only 80 degrees, but it exploded. In the previous few units, the MOS shell temperature reached 1...[Details]
In recent years, switching power supplies have developed rapidly due to their high efficiency, small size, and good output stability. However, due to the high frequency, high di/dt, and high dv/d...[Details]
In low-power switching power supplies, simple winding rectification is basically used to provide VCC, and the VCC power supply of the IC is the core of the switching power supply. In the debugging p...[Details]
It is very convenient to use an electric lock to open the door from a distance. The rated voltage of the working coil of this lock is DC12V, the DC resistance is about 2Ω, and the working current i...[Details]
Most LED power supply circuits are composed of a switching power supply circuit + a feedback circuit. The feedback circuit samples the load and adjusts the duty cycle or frequency of the switchin...[Details]
Working Principle Overview 1.1 System Module Wireless chargers use the principle of electromagnetic induction. A pulse frequency of 36.7K is generated through the NE555D chip (because after deb...[Details]
As a physical feature of the human body, fingerprints have the characteristics of uniqueness, stability and difficulty in theft. With the gradual maturity of fingerprint recognition theory and the ...[Details]
Considering the sampling speeds of currently available ADCs and the many different voltage and clock domains inside a typical ADC, it is generally recommended to separate the different power supply ...[Details]
This article collects and organizes the following 8 circuit example pictures about transistors for beginners. The pictures clearly show the basic functions of transistors. It is hoped that beginners ...[Details]
Due to its characteristics in impedance, TL431 is often used to replace diodes . As a precision voltage regulator, it is widely used in various circuit designs. In LED driving, TL431 plays a role in ...[Details]
At present, CCFL, W LED and RGB LED are still the three main backlighting methods for LCD monitors. You can learn about these backlighting knowledge before purchasing an LCD monitor. Since the backl...[Details]
Embedded System
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