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Network Interface Card: Types, Functions and Buying Guide17 August 2021
Network Interface Card (NIC, also known as a network interface controller) is one of the most basic components in the local area network. It is the hardware device connecting the computer and the network. Whether it is a twisted pair connection, a coaxial cable connection, or an optical fiber connection, data communication must be realized with the help of a network interface card.
How do We Select Automotive Relays?30 September 2020
A relay is an automatic control device whose output will have saltatory change when the input (electricity, magnetism, sound, light, heat) reaches a certain value. Automotive relays are relays used in automobiles. Such relays have high switching load power, high shock resistance and vibration resistance. Most power supplies in automobiles use 12V, and most of the coil voltages are designed to be 12V...
What is a Fiber Optic Sensor?31 October 2025
Fiber optic sensor is a sensor that converts the state of the measured object into a measurable optical signal. The fiber optic sensor is to send the light beam incident from the light source to the modulator through the optical fiber, and interact with the external measured parameters in the modulator so that the optical properties of the light such as light intensity, wavelength, frequency, phase, polarization state, etc. will be changed.
VRLA Battery: Working Principle, Capacity and Maintenance12 March 2021
VRLA batteries, which means Valve Regulated Lead Acid Battery was born in the 1970s. By 1975, a considerable scale of production had been formed in some developed countries, and industrialization was soon formed and put on the market in large quantities. Although this battery is also a lead-acid battery, it has many advantages compared with the original lead-acid battery, and is very popular with users, especially for those who need to install battery supporting equipment together (or a workshop). , Such as UPS, telecommunications equipment, mobile communication equipment, computers, motorcycles, etc.
How does an Inverter Work?06 April 2021
The inverter is a converter that converts DC electric energy into constant frequency and constant voltage AC or Frequency and voltage modulation AC. It is composed of an inverter bridge, control logic, and filter circuit. Inverters are widely used in air conditioners, home theaters, electric grinding wheels, power tools, DVDs, VCD, computers, TVs, washing machines, range hoods, refrigerators, video recorders, massagers, fans, lighting, etc.
Characteristics, Types, and Functions of Electrolytic Capacitors17 October 2025
Inside the electrolytic capacitor is an electrolyte material that stores electric charge. It has positive and negative polarity, which is similar to a battery, and it cannot be reversed. The positive electrode is a metal substrate with an oxide film. The negative electrode is connected to the electrolyte (solid and non-solid) through the metal electrode plate.
Random Access Memory: Definition, Types and Working29 August 2020
Random Access Memory (RAM), also called main memory, is an internal memory that directly exchanges data with the CPU. It can read and write at any time (except when refreshing), and and is usually used as a temporary data storage medium for the operating system or other running programs. The biggest difference between it and ROM is the volatility of data, that is, the stored data of RAM will be lost once the power is off.
Ultimate Guide to KVM Switches: Definition, Usage, and 2025 Trends18 December 2025
Hello, I am Rose. Welcome back to the new post today. KVM stands for keyboard, video and mouse. The so-called KVM is also called a multi-computer controller, and the official name is a multi-computer switch. A KVM switch is a hardware device that allows users to control 2, 4, 8, 16, or even more than 4096 computer hosts through a set of keyboards, video monitors, and mice.
Introduction to Lead Acid Battery: Construction, Working Principle and Types04 March 2021
The rechargeable and secondary batteries category includes lead acid batteries. Despite the battery's low energy-to-volume and energy-to-weight ratios, it can deliver higher surge currents. This refers to the fact that lead acid cells have a high power-to-weight ratio.
Metal Oxide Varistor: Specifications, Working and Construction26 January 2021
MOV is essentially a variable resistor, but MOVs can adjust its resistance depending on the applied voltage, unlike potentiometers. If the voltage through it raises the resistance decreases and vice versa. This property is helpful in shielding the circuits from high voltage surges, so they are often used in an electrical network as surge protectors.
Basic Introduction to Power Amplifier09 January 2026
Power amplifier refers to an amplifier that can generate the maximum power output to drive a certain load (such as a speaker) under a given distortion rate. The power amplifier plays a pivotal role of "organization and coordination" in the entire audio system, and to a certain extent dominates whether the entire system can provide good sound quality output.
What is a Capacitive Sensor?31 October 2025
Capacitive sensors use various types of capacitors as sensing elements. It is a conversion device that converts the measured physical or mechanical quantities into changes in capacitance which is actually a capacitor with variable parameters. Capacitive sensors are widely used for measurement of displacement, angle, vibration, speed, pressure, composition analysis, medium characteristics, etc.