Varistor

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

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Electrolytic Capacitor

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

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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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Understanding Electrical Transformers

AC electrical systems make extensive use of transformers. A…

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Coupling and Decoupling

Decoupling capacitors When designing a circuit, many novice engineers…

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Capacitors in parallel

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

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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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Power Factor And RMS Explained

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

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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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Energy Storage

Capacitors used for energy storage Capacitors are devices which store…

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PTC Thermistor

What are PTC Thermistors? PTC stands for "Positive Temperature…

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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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Carbon Film Resistor

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

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Mica Capacitor

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

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Capacitors in series

Capacitors in series Like other electrical elements, capacitors serve…

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Resistors in Series

How to Calculate the Equivalent Resistance For Resistors in Series?…

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Air Capacitor

What are air capacitors? Air capacitors are capacitors which use air…

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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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Resistor Values

Standard Resistor Values In 1952, the IEC (International…

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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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Metal Oxide Film Resistor

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

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Pull-up and Pull-down Resistors

What Are Pull-up Resistors? Pull-up resistors are resistors used in…

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Capacitance

What is capacitance? Electric capacitance is the ability of a…

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About the Authors

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

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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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Passive And Active Electronic Components

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

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Film Capacitor

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

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Power Resistor

What Are Power Resistors? Power resistors are designed to withstand…

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Coupling and Decoupling

Decoupling capacitors When designing a circuit, many novice engineers…

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