Varistor

What is a Varistor? A varistor is a voltage dependent resistor (VDR).…

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AC Power Analysis In Reactive Circuits

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

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Polymer Capacitor

What are polymer capacitors? Polymer capacitors are capacitors which…

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How To Calculate Power Factor Correction

As you now know, reactive components can cause a circuit’s power…

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Electrolytic Capacitor

What are electrolytic capacitors? An electrolytic capacitor is a type…

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Coupling and Decoupling

Decoupling capacitors When designing a circuit, many novice engineers…

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Sinusoidal Steady State Power and Average Power

In this page, we will expand and reinforce our understanding of power…

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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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Varistor

What is a Varistor? A varistor is a voltage dependent resistor (VDR).…

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Understanding Electrical Transformers

AC electrical systems make extensive use of transformers. A…

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Capacitors in parallel

Capacitors, like other electrical elements, can be connected to other…

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Power Factor And RMS Explained

In the previous page, we saw that the mathematical representation of…

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Parallel resistor calculator

Use this calculator to quickly calculate the equivalent resistance…

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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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Sinusoidal Steady State Power and Average Power

In this page, we will expand and reinforce our understanding of power…

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AC Power Analysis In Reactive Circuits

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

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Electric Charge

What is electric charge? Electric charge is a fundamental physical…

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Capacitors in parallel

Capacitors, like other electrical elements, can be connected to other…

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NTC Thermistor

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

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About the Authors

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

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Electrical Resistivity

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

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Temperature Coefficient of Resistance

Resistance Changes with Temperature The temperature coefficient of…

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Capacitors in series

Capacitors in series Like other electrical elements, capacitors serve…

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What Is Meant By Electrical Resistance?

Different materials react to voltage in different ways. If a material…

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Difference Between A Capacitor And Inductor

Capacitors A capacitor exhibits a relatively large amount of…

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Potentiometer

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

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Film Capacitor

What are film capacitors? Film capacitors are capacitors which use a…

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Supercapacitor

What are supercapacitors? Supercapacitors are electronic devices which…

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Varistor

What is a Varistor? A varistor is a voltage dependent resistor (VDR).…

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Mica Capacitor

What are mica capacitors? Mica is a group of natural minerals. Silver…

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Foil Resistor

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

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Tantalum Capacitor

What are tantalum capacitors? Tantalum capacitors are a subtype of…

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