Best Arduino Starter Kit – Our Top 8 Picks of 2019

The right Arduino starter kit can help make a project much easier, especially if it’s user-friendly and comes with all of the necessary modules and accessories. On the other hand, it’s easy to get bored quickly when your Arduino starter kit only comes with a few extras. Today, we’re going to review 8 of the … Read more

Best Portable Generator – Our Top Picks of 2019

A great portable generator is one that you can rely on to get you through emergencies. It needs to be reliable, durable, and long lasting. On the flipside, a poorly-made generator can let you down just when you need it most. Today, we’re going to review the Top 7 Portable Generators – so that you … Read more

Moore’s Law – What is it?

Moore’s Law refers to the observation that the number of transistors in an integrated circuit (IC) doubles approximately every 2 years. It is often cited as an explanation for the exponential growth of technology, sometimes even being coined as the ‘law of exponential growth’. Gordon Moore co-founder of Intel discovered that since the invention of … Read more

Network Topology: Types, Diagrams, and Definition

A network topology is defined as the layout or arrangement of elements (usually nodes or links) in a communication network. Network topologies are used to define or describe the arrangement of various types of telecommunication networks – such as computer networks, command and control radio networks, and industrial field busses. Types of Network Topology There … Read more

Potentiometer: Definition, Types, And Working Principle

What is a Potentiometer? A potentiometer (also known as a pot or potmeter) is defined as a 3 terminal variable resistor in which the resistance is manually varied to control the flow of electric current. A potentiometer acts as an adjustable voltage divider. How Does a Potentiometer Work? A potentiometer is a passive electronic component. … Read more

Thermistor: Definition, Uses & How They Work

What is a Thermistor? A thermistor (or thermal resistor) is defined as a type of resistor whose electrical resistance varies with changes in temperature. Although all resistors’ resistance will fluctuate slightly with temperature, a thermistor is particularly sensitive to temperature changes. Thermistors act as a passive component in a circuit. They are an accurate, cheap, … Read more

About Electrical4U

If you’re looking to learn all about electrical and electronics engineering – you’ve come to the right place. Electrical4U is the ultimate electrical and electronic engineering study site. We are dedicated to the teaching and sharing of all things related to electrical and electronics engineering. We have over 1000 electrical and electronics articles. Learn all … Read more

Ohm’s Law Calculator

Input any 2 of the 3 fields below. Voltage VmVKV Resistance ΩmΩKΩ Current AmAKA Calculate

Transformer Calculator

Single Phase Three Phase Power Rating VAKVAMVA Primary Voltage VKV Secondary Voltage VKV Calculate

Resistor Color Code Calculator

5 Band Resistor Color Code Calculator ΩK ΩM Ω ± 0.05%± 0.1%± 0.25%± 0.5%± 1%± 2%± 5%± 10% Show Color Code 4 Band Resistor Color Code Calculator ΩK ΩM Ω ± 0.05%± 0.1%± 0.25%± 0.5%± 1%± 2%± 5%± 10% Show Color Code 3 Band Resistor Color Code Generator ΩK ΩM Ω Show Color Code 5 … Read more