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AT89C2051 is a simplified version of the 51 microcontroller. It has simplified the P0 and P2 ports and only has 20 pins. However, it integrates a very practical analog comparator inside, which is esp...[Details]

This paper mainly proposes a design method for a stereo signal phase difference and level difference tester. With a single-chip microcomputer as the control core, it is mainly composed of a phase dif...[Details]

1 System Principle and Design 1.1 Detection Principle At present, there are two common types of mice, wheel type and photoelectric type. The wheel type mouse relies on the transmission of the wheel...[Details]

When the current transformer (CT) is in working state, its secondary circuit must not be open, otherwise it will cause high voltage and liveness in the secondary circuit, which may damage the elect...[Details]

The traditional technology of mine security system is relatively mature, mainly including TV monitoring system. The front-end point close to the central control room generally adopts cable transmis...[Details]

We know that thyristors have an important characteristic parameter - the critical rise rate of off-state voltage dlv/dlt. It indicates the minimum voltage rise rate that causes the thyristor to switch...[Details]

Electromagnetic flowmeters (EMF for short) are new flow measurement instruments that developed rapidly in the 1950s and 1960s with the development of electronic technology. Electromagnetic flowmeters...[Details]

Although many smart locks (such as fingerprint identification and IC card identification) have been launched, these products are targeted at specific fingerprints or valid cards and can only be use...[Details]

introduction FlexRay bus is a recently launched advanced high-speed serial synchronous and asynchronous communication system that uses point-to-point (star topology) connection and unshiel...[Details]

Preface: The National Energy Administration issued a notice that the total installed capacity of domestic photovoltaic power generation 　　　in 2014 reached 14G, including 8G distributed and 6G grou...[Details]

ADC Converter Analog signal: A signal that is continuous in time and value. Digital circuits: signals that are discontinuous in time and value ADC circuit refers to analog-to-digital conversion cir...[Details]

Why use Ethernet in industrial applications? More and more industrial systems are using Ethernet connectivity to solve the key challenges of Industry 4.0 and smart factory communications faced by man...[Details]

How Motor Starters Work Motor starters are usually used to start larger power motors. Their function is to limit the current when the motor starts, protecting the motor and power supply equipm...[Details]

Every year, high dividends and bonus shares are one of the indispensable focuses of the A-share market. This method of stimulating stock price increases without having to share money from itsel...[Details]

Near the end of the year, CATL focused on the scenario of hybrid vehicles and launched its second battery brand "Xiaoyao" this year. Different from the previous Kirin and Shenxing ser...[Details]