Resistor Symbols

All types of resistors have their own resistor symbols which are used…

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Tantalum Capacitor

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

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Variable Resistor

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

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Power Resistor

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

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Electrical Resistivity

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

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Digital Potentiometer

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

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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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Dielectric Materials

Dielectric materials Dielectric materials are essentially insulators,…

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Resistor Capacitance

What Is Resistor Capacitance? Capacitance is an ability of a body to…

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Power Factor And RMS Explained

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

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Carbon Composition Resistor

An Introduction to Carbon Composition Resistors Carbon composition…

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Q factor

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

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Capacitance

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

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PTC Thermistor

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

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Capacitors in series

Capacitors in series Like other electrical elements, capacitors serve…

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Impedance and Reactance

Impedance and reactance An element in a DC circuit can be described…

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Resistors for LED Circuits

Resistors in Light Emitting Diode (LED) Circuits An LED (Light…

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AC Power Analysis In Reactive Circuits

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

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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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Resistor Values

Standard Resistor Values In 1952, the IEC (International…

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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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Potentiometer

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

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Motor starting capacitor

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

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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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Trimmer Capacitor

What are trimmer capacitors? Trimmer capacitors are variable…

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Impedance and Reactance

Impedance and reactance An element in a DC circuit can be described…

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Foil Resistor

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

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Varistor

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

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Q factor

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

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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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Wirewound Resistor

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

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Thin and Thick Film

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

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About the Authors

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

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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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Parallel resistor calculator

Use this calculator to quickly calculate the equivalent resistance…

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Basic DC Circuit Theory

Voltage and Current Relationship The earth is a dynamic place. Objects…

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Resistor Guide Intro

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

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Electrical Resistivity

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

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