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Jun 11 2020

Solid State Relays: A Basic Overview

I Introduction Solid-state relays(SSRs) have unparalleled advantages over other relays, because it can make and break the circuit without contact or spark. In addition, with the progress of technology, the maturity of manufacturing and the decline in price, solid-state relay has become widely

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Jun 10 2020

Basic Knowledge of Blown Fuse

I Introduction What is blown fuse? A fuse is an electrical safety device that operates to provide over-current protection of an electrical circuit. Its essential component is a galvanized wire with antimony tin alloy that blows (melts) when too much current flows through it, thereby inter

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Jun 6 2020

Transformer: Low Voltage Transformer

I IntroductionThis article introduces the basics of low voltage transformer, including the definition of low voltage transformer, the principle of low voltage transformer, its installation method, malfunction, and how to repair a household low voltage transformer. A transformer is an electronic ins

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May 29 2020

What is a Ballast: Types, Function and Replacement Guide

I IntroductionThe ballast has become an important additional device in the gas discharge light source circuit. Because most gas discharge lamps are made using arc discharge characteristics and have negative characteristics (also known as negative resistance characteristics) where the voltage decreas

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May 26 2020

What is a High Pass Filter?

Ⅰ IntroductionA high-pass filter (HPF), also called a low-cut filter or bass-cut filter, passes signals with a frequency higher than a certain cutoff frequency and attenuates signals with frequencies lower than the cutoff frequency. That is, unnecessary low-frequency components or low-frequency sign

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May 26 2020

What is an LC Circuit?

I IntroductionThe LC circuit is a circuit composed of capacitors, inductors, resistors and other components and electronic devices that can generate oscillating current or have a filtering effect, and is also called a resonant circuit, tank circuit, or tuned circuit. The LC circuit formed by connect

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Apr 18 2020

Resistor Basics: Types of Resistors

I IntroductionThere are a wide range of types of resistors, and with the development of electronic technology, new types of resistors will continue to increase. Resistors are generally divided into two categories: fixed resistors and variable resistors. Fixed resistors can be divided into two

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Mar 21 2020

Working Principle and Accuracy of Infrared Thermometers

CatalogI IntroductionII What is Infrared?III Theoretical Principle of Infrared Temperature MeasurementIV The Principle of Infrared ThermometerV Differences in Accuracy of Different Types of Infrared Thermometers 5.1 Three Categories of Infrared Thermometers 5.2 Differences Between Mainstre

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Mar 20 2020

Operational Amplifier Applications, Op-amp Basics

Ⅰ Introduction As for operational amplifier applications, in electronic circuit, it is usually combined with a feedback network to form a certain functional module, with a special coupling circuit and feedback. Its output signal can be input signal addition, subtraction or differentiation, integrat

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Mar 13 2020

Variable Resistor: Basics, Application Circuits&Common Malfunctions

CatalogI IntroductionII Definition, Symbol and Labeling of Variable Resistor2.1 Definition2.1.1 What is Variable Resistance?2.1.2 What is Variable Resistor?2.2 Symbol2.3 Labeling Method of Variable ResistorIII How The Variable Resistor WorksIV Features of Variable Resistor ShapeV Structure and Funct

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