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Jul 29 2020

How to Test a Relay with Multimeter?

Introduction A relay is an electronic control device, which has a control system (also called an input loop) and a controlled system (also called an output loop). It is often used in automatic control circuits. In fact, it is an automated switch using smaller current to control a larger current. Th

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Jul 23 2020

How to Test a Start Capacitor?

Introduction What is the difference between a three-phase AC motor and a single-phase AC motor? If you pay attention to it, you will find that single-phase AC motors have one more equipment than three-phase AC motors, which is the start capacitor(starting capacitor). The most common one is in vario

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Jul 23 2020

Vacuum Tubes for Sale: Vacuum Tube Radio Overview

Ⅰ Introduction The vacuum tube was an essential part of early radios, used to create and amplify the electrical signals needed for the radio to work. The vacuum tube radio was a new stuff of the early 20th century, and immediately became the "new favorite" of that era with the launch of the radio s

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Jul 6 2020

How Does Computer Memory Work? Examples Analysis

Ⅰ Introduction Computer memory is used to store programs and data. The main function of memory is to read and write. For random access memory RAM, their main functions are to read and write, and for read-only memory ROM, the main function is only to read. In general, the memory can b

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Jul 2 2020

AGM vs.Gel Batteries: What's the Difference in Design?

I OverviewValve regulated lead acid battery (VRLA battery) is generally divided into gel battery and AGM battery.  Figure 1. Classification of VRLA Battery Gel battery is a valve regulated lead acid battery made by gel technology which not only refers to whether the batter

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Jun 20 2020

Diode Basic: Introduction to Different Types of Diode

Ⅰ Introduction 1.1 Diode Structure and Symbol This Video Clearly Explains the  P-N Junction Semiconductor Diode Basic diode consist of a tube, a case and two electrodes. The tube is a PN junction, and a pin is drawn at each end of the PN junction. Use pla

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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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