Varistor

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

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Resistors for LED Circuits

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

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Resistor Color Code

How Does the Resistor Color Code Work? Check out the All About…

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Motor starting capacitor

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

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Ohm’s Law

What Is Ohm’s Law? Ohm’s law states that the electrical…

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Resistor Sizes and Packages

Resistors are available in a large number of different package styles…

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Polymer Capacitor

What are polymer capacitors? Polymer capacitors are capacitors which…

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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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Supercapacitor

What are supercapacitors? Supercapacitors are electronic devices which…

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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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Parasitic Inductance

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

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Power Rating

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

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Electric Field

What is an electric field? An electric field is a special state that…

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Variable Resistor

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

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Potentiometer Taper

What is Potentiometer Taper? Potentiometer taper is the relation…

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Temperature Coefficient of Resistance

Resistance Changes with Temperature The temperature coefficient of…

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Carbon Film Resistor

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

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Rheostat

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

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About the Authors

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

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Resistor Noise

What is Resistor Noise? Noise is an unwanted phenomenon for resistors.…

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AC Power Analysis In Reactive Circuits

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

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Tantalum Capacitor

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

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Magneto Resistor

What is a Magneto Resistor Magneto resistors have a variable…

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Capacitors in parallel

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

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