Power Rating

What is the Power Rating of a Resistor? The power rating of a resistor…

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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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Variable Resistor

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

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Photoresistor

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

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Parallel resistor calculator

Use this calculator to quickly calculate the equivalent resistance…

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Fixed Resistor

What is a Fixed Resistor? Fixed value resistors have a defined ohmic…

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About the Authors

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

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Varistor

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

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Electrical Resistivity

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

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Resistor Symbols

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

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Power Resistor

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

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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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Foil Resistor

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

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Supercapacitor

What are supercapacitors? Supercapacitors are electronic devices which…

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Shunt Resistor

Definition Shunt Resistor A shunt resistor is used to measure electric…

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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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Standard Resistor Power Ratings

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

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Resistor Color Code Calculator

This resistor color code calculator will help you determine the value…

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Temperature Coefficient of Resistance

Resistance Changes with Temperature The temperature coefficient of…

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Metal Film Resistor

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

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Resistor Color Code Calculator

This resistor color code calculator will help you determine the value…

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Magneto Resistor

What is a Magneto Resistor Magneto resistors have a variable…

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Basic DC Circuit Theory

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

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Motor starting capacitor

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

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Supercapacitor

What are supercapacitors? Supercapacitors are electronic devices which…

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Rheostat

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

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Dielectric Materials

Dielectric materials Dielectric materials are essentially insulators,…

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Resistor Symbols

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

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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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Filter capacitor

Filter capacitors Capacitors are reactive elements, which make them…

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Potentiometer Taper

What is Potentiometer Taper? Potentiometer taper is the relation…

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Power Factor And RMS Explained

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

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PTC Thermistor

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

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Standard Resistor Power Ratings

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

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Kirchhoff’s Laws

Gustav Robert Kirchhoff   Kirchhoff's laws are essential for…

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Film Capacitor

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

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Understanding Electrical Transformers

AC electrical systems make extensive use of transformers. A…

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Air Capacitor

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

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Tantalum Capacitor

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

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Resistor Suppliers

When you are looking for electronic components or where to buy…

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