Potentiometer

What is a Potentiometer? A potentiometer is a manually adjustable…

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Resistance of a Resistor

Resistance of a Resistor The function of a resistor is to oppose the…

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Wirewound Resistor

What is a Wirewound Resistor? A wirewound resistor is an electrical…

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Capacitor Guide Intro

Welcome to the Capacitor Guide! Your guide in the world of capacitors.…

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Motor starting capacitor

Motor capacitors AC induction motors use a rotating magnetic field to…

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Wirewound Resistor

What is a Wirewound Resistor? A wirewound resistor is an electrical…

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Resistor Guide Intro

Welcome to the Resistor Guide! The Resistor Guide will guide you in…

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Ohm’s Law

What Is Ohm’s Law? Ohm’s law states that the electrical…

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Resistor Color Code

How Does the Resistor Color Code Work? Check out the All About…

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Carbon Composition Resistor

An Introduction to Carbon Composition Resistors Carbon composition…

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Dielectric Materials

Dielectric materials Dielectric materials are essentially insulators,…

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Metal Film Resistor

Metal Film Resistors Metal film resistors have a thin metal layer as…

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Metal Oxide Film Resistor

What are Metal Oxide Film Resistors? Metal-oxide film resistors are…

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Carbon Film Resistor

What is a Carbon Film Resistor? Carbon film resistors are a type of…

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Passive And Active Electronic Components

In a previous page, we discussed phasors, but we didn’t explore…

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Resistor Sizes and Packages

Resistors are available in a large number of different package styles…

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Thin and Thick Film

What are Thin and Thick Film Resistors? Thin and thick film resistors…

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Q factor

Q Factor definition The Q factor of a capacitor, also known as the…

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Triangle Of Power And Power Factor

In a purely resistive AC circuit, power is simply power. If we add…

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Blower Resistor

What is a Blower Resistor? Blower resistors are resistors which are…

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Resistor Properties

The function of resistors is to oppose the flow of electric current in…

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Capacitors in series

Capacitors in series Like other electrical elements, capacitors serve…

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About the Authors

Robert Keim Robert Keim graduated from the University of California,…

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Variable Resistor

What is a Variable Resistor? A variable resistor is a resistor of…

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Measurements In Electrical Engineering

Powers of Ten A numeral system is a method of using certain digits to…

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Photoresistor

What are Photoresistors? Photoresistors, also known as light dependent…

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Foil Resistor

What is a Foil Resistor? The metal foil resistor has the best…

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NTC Thermistor

What are NTC Thermistors? NTC stands for "Negative Temperature…

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Electrical Resistivity

What Is Electrical Resistivity? Electrical resistivity is a measure of…

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Standard Resistor Power Ratings

An electrical device’s power rating provides a general idea of…

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Understanding Electrical Transformers

AC electrical systems make extensive use of transformers. A…

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Digital Potentiometer

What is a Digital Potentiometer? A digital potentiometer (also known…

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Parallel resistor calculator

Use this calculator to quickly calculate the equivalent resistance…

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Resistor Guide Intro

Welcome to the Resistor Guide! The Resistor Guide will guide you in…

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Metal Film Resistor

Metal Film Resistors Metal film resistors have a thin metal layer as…

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AC Power Analysis In Reactive Circuits

We already know that purely reactive components (or purely reactive…

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Rheostat

What is a Rheostat? A rheostat is a variable resistor which is used to…

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