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Infrared Thermometer: How it Works? How to Use it?12 August 2021
Infrared thermometers are divided into fixed thermometers and hand-held thermometers. They are a kind of thermometer that detects the amount of infrared rays on the surface of an object to achieve temperature measurement.
LVDT - Linear Variable Differential Transformer Basics16 January 2021
LVDT is the abbreviation of linear variable differential transformer, which belongs to linear displacement sensor. It is a movable iron core transformer that consists of a primary coil, two secondary coils, iron core, coil frame, shell and other components.
What is a Voltage Controlled Oscillator?09 January 2026
Voltage controlled oscillator (VCO) refers to an oscillator circuit whose output frequency corresponds to the input control voltage. The operating state of the oscillator or the component parameters of the oscillation circuit are controlled by the input control voltage. The frequency of the VCO has a linear relationship with the control voltage. It is an important part of PLL.
An Overview of Photoelectric Sensors27 October 2025
The photoelectric sensor is a key component of photoelectric conversion in various photoelectric detection systems. It is a device that converts optical signals (visible and ultraviolet laser light) into electrical signals. There are many types of photoelectric sensors that use photoelectric elements as sensitive elements, and they are widely used. Photoelectric devices include photocells, photomultiplier tubes, photoresistors, photodiodes, phototransistors, photocells, etc.
What is a Reed Relay?16 April 2021
A reed relay is a type of relay that uses an electromagnet to act directly on the reed-like contact of a reed switch contained within a glass envelope, typically bringing the reeds together to make contact when the electromagnet is powered.
Introduction to Silicon Controlled Rectifier25 September 2020
Silicon Controlled Rectifier, abbreviated as SCR, is a high-power electrical component, also known as a thyristor. It has the advantages of small size, high efficiency and long life. In the automatic control system, it can be used as a high-power drive device to realize the control of high-power equipment with low-power controls. It has been widely used in AC and DC motor speed control system, power control system and servo system.
Introduction to MD8002A Audio Amplifier27 March 2025
The MD8002A is an audio power amplifier that uses a 5V DC power supply to provide 2.0 watts of continuous power to a BTL load with less than 10% distortion. It was created with the aim of providing high-quality o/p control with fewer components. It doesn't use any output coupling capacitors or bootstrap capacitors.
Introduction to RAID (Redundant Arrays of Independent Disks)01 July 2021
RAID (Redundant Arrays of Independent Disks) means "a redundant array composed of independent disks". The RAID is the combination of many independent disks that combined into a large-capacity disk group. It uses the bonus effect of individual disks to provide data to enhance the performance of the entire disk system.
What is an Auto Transformer and Its Working?01 April 2021
Auto transformer refers to a transformer whose primary and secondary windings are on the same winding, and the primary and secondary windings are directly connected in series and self-coupled. According to the structure, it can be subdivided into adjustable pressure type and fixed type. Auto-coupling means electromagnetic coupling. Ordinary transformers transfer energy through the electromagnetic coupling of the primary and secondary coils. There is no direct electrical connection between the primary and secondary sides. The primary and secondary sides of the auto transformer have direct electrical connections. Its low-voltage coils It is part of the high voltage coil. Protective equipment such as auto transformers are also used in protective equipment for communication lines.
How to Choose MOSFET for Switching Power Supply?02 March 2022
A metal-oxide semiconductor field-effect transistor (MOSFET) is a field-effect transistor that can be widely used in analog circuits and digital circuits.This article will help you to select MOSFET for switching power supply.
Introduction to Optical Zoom and Digital Zoom19 June 2021
Optical zoom relies on the structure of the optical lens to achieve zoom, that is, the lens of the camera is moved to zoom in and out of the scene to be shot, and the resolution and image quality will not change. The greater the optical zoom factor, the more distant objects can be captured. Digital zoom uses the processor in the digital camera to increase the area of each pixel in the picture to achieve the purpose of magnification.
Detailed Explanation About Twenty Kinds of Capacitor08 November 2021
Hello everyone, I am Rose. Today I will introduce 20 kinds of capacitor to you. I will illustrate them in three or four aspects: Structure, features, Usages, advantages and disadvantages.