Aug 7 2020

What are Capacitors in Series and Parallel?

Introduction Capacitors are components that store electricity and electrical energy (potential energy), and play an important role in circuits such as tuning, bypassing, coupling, and filtering. Capacitors are connected in parallel to increase capacity, and capacitors are connected in series to dec

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Aug 5 2020

How Relays Work? Relay Functions and Applications

Introduction A relay is an electromagnetic switch operated by a relatively small electric current that can turn on or off a much larger electric current. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. Because of unique cha

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Jul 31 2020

Oscillator Basics: Oscillator Circuit Types Explanation

Introduction Simply put, an oscillator is a device that can convert DC power into AC power without external signal excitation. The so-called "oscillation" implies alternating current. This article will mainly explain the circuits of different sine wave oscillators, including their working principle

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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&n

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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 IntroductionThe 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 sho

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Jul 6 2020

How Does Computer Memory Work? Examples Analysis

Ⅰ IntroductionComputer 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 be

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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 Introduction1.1 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 plastic

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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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