Varistor

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

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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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Power Factor And RMS Explained

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

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Understanding Electrical Transformers

AC electrical systems make extensive use of transformers. A…

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AC Power Analysis In Reactive Circuits

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

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Capacitors in parallel

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

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Electrolytic Capacitor

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

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Varistor

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

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Polymer Capacitor

What are polymer capacitors? Polymer capacitors are capacitors which…

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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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Coupling and Decoupling

Decoupling capacitors When designing a circuit, many novice engineers…

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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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Complex Numbers, Phasors And Phase Shift

The Effect of Phase We saw in the previous page that the voltage…

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Wirewound Resistor

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

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Carbon Composition Resistor

An Introduction to Carbon Composition Resistors Carbon composition…

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About the Authors

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

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Kirchhoff’s Laws

Gustav Robert Kirchhoff   Kirchhoff's laws are essential for…

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Understanding Electrical Transformers

AC electrical systems make extensive use of transformers. A…

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Resistor Inductance

What Is Resistor Inductance? Inductance is an electrical property of…

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NTC Thermistor

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

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Parasitic Inductance

What is inductance? Electric inductance is a property of all…

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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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What Is a Resistor?

The resistor is a passive electrical component that creates…

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Parallel resistor calculator

Use this calculator to quickly calculate the equivalent resistance…

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Carbon Film Resistor

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

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Thermistor

What is a Thermistor? A thermistor is a temperature sensitive…

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Basic AC Circuits

We started out this chapter by discussing power in DC circuits. Now,…

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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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Supercapacitor

What are supercapacitors? Supercapacitors are electronic devices which…

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Resistor SMD Code

What are SMD Resistors?   SMD resistors on a printed circuit…

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Tantalum Capacitor

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

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Dielectric Materials

Dielectric materials Dielectric materials are essentially insulators,…

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