DC Motor Theory

DC Motor Theory | Working Principle

One of the most important developments in the field of electricity is the electric motor. The electric motor converts electrical power into rotating mechanical power. Motors are used for such items as refrigeration and air conditioning, food mixers, vacuum cleaners, grinders, pumps, power bench saws, lathes, various wood and metal …

Read More »

Paralleling of Generators and Synchronization

Paralleling of Generators and Synchronization

The most common generator used in production of electrical power is the three-phase generator. It consists of a rotating magnetic field inside three sets of windings. See Figure 1, part A. The three sets of windings are referred to as the armature of the generator. The armature provides power for …

Read More »

DC Generator Types & Working

dc generator types and working

There are a number of different types of DC generators. Several of these generator types will be discussed briefly. Study their similarities as well as their differences. DC Generators can be distinguished by their method of excitation. Self-excited generators can be separated further into the categories of shunt, series, and …

Read More »

Electric Generator: Construction, Working and Losses

three phase electric generator construction and working

After studying this article, you will be able to: Explain how mechanical energy can produce electrical energy. State Lenz’s law. Discuss the difference between direct current and alternating current. Explain the construction and function of an Electric generator. In 1831, scientist Michael Faraday wondered: If electricity produces magnetism, can magnetism …

Read More »

Electrical Components and Symbols

Electrical Components and Symbols

Electrical and electronic systems contain circuits. Loosely defined, a Circuit is a group of components that performs a specific function. The function performed by a given circuit depends on the components used and how they are connected together. Nearly all circuits, no matter how complex, are made up of the …

Read More »

Use your iPhone as Your Home Stereo

Use your iPhone as Your Home Stereo

Your iPhone is great for music on the go, but you can use it as your home stereo as well. In this project, we’ll look at the five best ways of doing so: •   Using an iPhone speaker dock •   Connecting your iPhone directly to your stereo with a cable •   Connecting your …

Read More »

Load your iPhone with Content from Multiple Computers

Load your iPhone with Content from Multiple Computers

As you know, you can sync your iPhone in either of two ways: by using Apple’s iCloud online service, or by using your computer. iCloud is arguably the wave of the future, and it’s a great way to keep your music and other content synced among your iPhone, your computer, …

Read More »

Resistor Types and Color Code

Resistor Types and Color Code

One of the most common components encountered in the study of electronics is the resistor. The resistor is used to create desirable voltage drops and limit current values in electronic circuitry. Figure 1 shows several molded composition, fixed resistors. They are manufactured in many sizes and shapes. The schematic symbol …

Read More »

Electrical Circuit Devices

Electrical Circuit Devices

There are several common circuit devices that are present in most electrical and electronic circuits. They provide a means of controlling electron flow through the conductor paths and provide for safe operation of circuits. The three important items discussed here are switches, connectors, and circuit protection devices. Switches Switches are …

Read More »

Types of DC Motors

Types of DC Motors | Motor Starting Circuits

The different types of dc motors share the common names of dc generators such as shunt, series, and com- pound. The construction of the motors is similar to the generator counter parts. Shunt DC Motor In the shunt motor, the field windings shunt across, or in parallel to, the armature, …

Read More »

Setting up Your Apple Watch

Setting up Your Apple Watch

Why do you need an iPhone? The Apple Watch has many capabilities, but it can’t do everything on its own. It works in tandem with your iPhone to perform many functions. Having an iPhone is not optional; you must have one to use your Apple Watch. You need an iPhone …

Read More »

Getting to Know Apple Watch | How to Use the Apple Watch

Getting to Know Apple Watch | How to Use the Apple Watch

Anatomy of the Apple Watch The sleek, streamlined design of Apple Watch is designed for easy, intuitive use and has few external parts and pieces. Apple Watch Models Apple Watch comes in three different models, with options that can be mixed and matched to create 38 different variations. When it …

Read More »

Ideal Operational Amplifier

Ideal Operational Amplifier | Characteristics | Basics

Amplifiers are an essential aspect of many electronic applications. Perhaps the most familiar use of an amplifier is to convert the low-voltage, low-power signal from a digital audio player (e.g., iPhone or MP3 player) to a level suitable for driving a pair of earbuds or headphones, as shown in Figure 1. …

Read More »

Zener Diode as Voltage Regulator

Zener Diode as Voltage Regulator

For many applications, it is desirable that a DC supply be steady and ripple-free. Voltage regulators are used to ensure that the output of a DC supply is steady and relatively independent of load. The most common device employed in voltage regulation schemes is the Zener diode. Zener diodes are …

Read More »

PN Junction Theory for Semiconductor Diodes

PN Junction Theory for Semiconductor Diodes

A simple section of n- or p-type material is not particularly useful for the construction of electronic circuits. However, when sections of n- and p-type material are brought in contact to form a PN junction, a diode is formed. Diodes have a number of interesting and useful properties that are due entirely to the nature of the PN …

Read More »

Physical Limitations of Operational Amplifier

Physical Limitations of Operational Amplifier

Practical op-amps are not ideal but exhibit limitations that should be considered in the design of instrumentation. In particular, in dealing with relatively large voltages and currents, and in the presence of high-frequency signals, it is important to be aware of the non-ideal properties of the op-amp. Figure a: Operational …

Read More »

Inverting & Non-Inverting Operational Amplifier Basics

Inverting & Non-Inverting Operational Amplifier Basics

An operational amplifier (op-amp) is an integrated circuit (IC) that contains a large number of microscopic electrical and electronic components integrated on a single silicon wafer. An op-amp can be used in conjunction with other common components to create circuits that perform amplification and filtering, as well as mathematical operations, such as addition, subtraction, …

Read More »