Jun 19 2020

Photoresistor: Basics and Arduino Tutorial

I IntroductionPhotoresistor or light-dependent resistor (abbreviated as LDR) or photoconductor is a special resistor made of semiconductor materials such as cadmium sulfide or cadmium selenide. Its working principle is based on the internal photoelectric effect. The stronger the light, the lower the

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Jun 18 2020

Common Potentiometer Types and Applications Available

Ⅰ Introduction A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider, also commonly known as pot. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat. The mechanical construction of pote

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Jun 17 2020

Capacitor Basics: Capacitor Types

I IntroductionA capacitor is an electronic component composed of an insulator between two conductors, like a sandwich. We can understand it as a container that holds the electric charge. In actual capacitors, two conductors are filled with an insulating dielectric. There are numerous types of dielec

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Jun 15 2020

The Basic Introduction to Light-emitting Diode

I IntroductionThe light-emitting diode is a commonly used light-emitting device, which emits energy through the recombination of electrons and holes. It is widely used in the field of lighting. Light-emitting diodes can efficiently convert electrical energy into light energy. Light-emitting diodes h

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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 Introduction A 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 si

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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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