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Capacitive touch screen principle

Capacitive touch screen principleIn summary, the working principle of the touch screen is to report coordinate values, X-axis and Y-axis values. Earlier we analyzed the resistive touch screen, which uses ADC to detect and calculate the X and Y axis c...
2023-11-01351Internet of Things

Accurately measure resistor value using ADC

Many microcontrollers now have ADC functions, 10-bit or 12-bit. It is very convenient to use ADC to measure voltage. To measure the resistance of a resistor, you can use Ohm's law to divide the voltage and then measure the divided voltage to calculat...
2023-10-311077Semiconductor

Basic parameters and applications of thermistor (NTC)

Zero power resistance value RT(Ω) RT refers to the resistance value measured at a specified temperature T using a measurement power that causes a change in resistance value that is negligible relative to the total measurement error.Rated zero power r...
2023-10-30960Basic knowledge

The working principle and advantages and disadvantages of stepper motors

The working principle, structure, control method, use, type and advantages and disadvantages of stepper motors.
2023-10-28574Industrial applications

Why should a 0.1uF capacitor be placed near the chip?

The essence of the capacitor modelLet’s take a look at the capacitor first. Simply put, the function of a capacitor is to store charge. We all know that capacitor filtering is required in the power supply, and a 0.1uF capacitor is placed on the power pin...
2023-10-27519Projects

Power filter and their design techniques

The function, principle, requirements and steps of the source filter, as well as some design tips and precautions.High frequency ripple passes right through the linear regulator. Ripple comes from switching power supplies, digital circuits and radio interfe...
2023-10-26871Power management

The development history of oscilloscopes

The origins of electronic oscilloscopes are not easy to verify, so prehistoric times are divided by the operating characteristics of oscilloscopes. The edge trigger mode that we use most often today is probably even considered to be part of the basic functio...
2023-10-241081Industry

Who made the world's first optical fiber？

In 1966, K.C. Kao, a Chinese scientist working at the British Standard Telecommunications Experimental Co., Ltd., and his colleague G.A. Hockham jointly published an article titled "Optical Frequency Dielectric Fiber Surface Waveguide" pape...
2023-10-23520Internet of Things

Polarity identification methods for various electronic components

Polar components require special attention throughout the entire PCBA processing process, as directional component errors can lead to batch production accidents and the scrapping of the entire PCBA board. Therefore, it is extremely important for engi...
2023-10-21998Projects

What should I do if the motor drive board gets seriously hot?

A PCB layout reference guide to solve the problem of motor driver board hotness and how to avoid circuit board hotness.
2023-10-20331Industry

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