Varistor

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

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Varistor

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

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Thermistor

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

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PTC Thermistor

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

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Resistor SMD Code

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

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Shunt Resistor

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

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Variable Resistor

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

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NTC Thermistor

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

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Resistor Values

Standard Resistor Values In 1952, the IEC (International…

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Basic DC Circuit Theory

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

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PTC Thermistor

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

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Resistor Books and Online Resources

On this page you will find a collection of valuable books and other…

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Electric Charge

What is electric charge? Electric charge is a fundamental physical…

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Resistor SMD Code

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

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Electrical Resistivity

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

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Impedance and Reactance

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

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Difference Between A Capacitor And Inductor

Capacitors A capacitor exhibits a relatively large amount of…

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About the Authors

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

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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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Passive And Active Electronic Components

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

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Capacitor Guide Intro

Welcome to the Capacitor Guide! Your guide in the world of capacitors.…

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Trimpot

What is a Trimpot? A trimpot or trimmer potentiometer is a small…

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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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Resistor Noise

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

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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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Current limiting

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Temperature Coefficient of Resistance

Resistance Changes with Temperature The temperature coefficient of…

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Varistor

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

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Tantalum Capacitor

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

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Power Factor And RMS Explained

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

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