When your computer is turned off, the indicator light on the monitor is still on silently, and the speakers are working secretly, making some terrifying crackling interference sounds from time to time...
Analysis of the causes of heating of motor bearings1. Friction between motor bearings and bearing coversThe main reason for this fault is that the motor is not processed in time during the processing ...
A: When UST_OTG1 is not used to burn the system, can it be used directly by plugging in a USB flash drive?
B: The EK140P baseboard of 6UL and 6ULL is not powered by OTG1, so it cannot be used as a HOS...
Apple continued its “Shot with iPhone” series today by uploading another “Experimental” video focusing on the iPhone 13 Pro’s camera capabilities. In the video, titled "Movie Magic," Dong Hoon Jun ...[Details]
DC-
DC
switching
power supplies have been widely used in the fields of electronic, electrical equipment, and household appliances due to their small size, light weight, high efficiency, and...[Details]
This article analyzes the common problems in the electromagnetic compatibility testing of mobile phones, including electrostatic discharge immunity test, electrical fast transient pulse group immunity...[Details]
UPS power supply can be divided into conversion type and parallel type according to the inverter combination mode. The main circuit block diagram of single-phase conversion type UPS power supply with...[Details]
There are three ways to reduce system errors.
① Calibrate the measuring instruments. In the measurement with high accuracy requirements, the correction value is used for correction; for commonly ...[Details]
The LT3741 and LT3741-1 are fixed frequency synchronous step-down DC/DC controllers designed to accurately regulate output currents up to 20A. The average current mode controller maintains inductor...[Details]
0 Introduction
The piezoelectric ceramic actuator (PZT) is the core of the micro-displacement platform. Its main principle is to use the inverse piezoelectric effect of piezoelectric ceramics t...[Details]
1 Introduction
Organic light emitting diode (OLED) is a new type of flat panel display device and two-dimensional light source. By testing the current-voltage characteristics, luminous bright...[Details]
The coordinated control of multiple asynchronous motors plays an important role in industrial production. At present, there are two main frequency conversion control methods: speed sensorless type ...[Details]
The University of Brighton in the UK recently conducted a test on the automotive organic Rankine cycle (ORC) waste heat recovery system. In this experiment, researchers used a new linear f...[Details]
In the previous blog, we used the delay function to make the LED flash. Today, we use the STM32 timer to make the LED flash. I will not explain the types of 32-bit timers here today. I will write ...[Details]
The reason for using 11.0592 crystal oscillator is due to the timer of 51 single chip microcomputer. When using the timer of 51 single chip microcomputer as baud rate generator, if 11.0592Mhz crystal...[Details]
A direct conversion radio uses a pentode tube to achieve 450 times audio gain. Pentodes have high transconductance, which is the ratio of the change in anode current to the change in control grid volt...[Details]
Some people ask, there are so many programmable interfaces behind the instrument, why do people usually only set up and debug manually, and never see them come in handy? Today, Antai Testing Ma Gong ...[Details]
introduction
The new generation of display devices, organic electroluminescent display devices OLED (Organic Light Emitting Diode), are 1/3 of LCD in thickness, 1,000 times faster than...[Details]
Analogue and Mixed Signal
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