Parasitic Inductance

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

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Resistor Color Code

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

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Ohm’s Law

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

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Power Resistor

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

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Temperature Coefficient of Resistance

Resistance Changes with Temperature The temperature coefficient of…

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Resistor Guide Intro

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

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Electrolytic Capacitor

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

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Understanding Electrical Transformers

AC electrical systems make extensive use of transformers. A…

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Resistor Capacitance

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

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Electric Charge

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

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Capacitors in parallel

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

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Basic AC Circuits

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

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Metal Oxide Film Resistor

What are Metal Oxide Film Resistors? Metal-oxide film resistors are…

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Capacitor Guide Intro

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

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Air Capacitor

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

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Resistor Values

Standard Resistor Values In 1952, the IEC (International…

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Thin and Thick Film

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

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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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Capacitors in series

Capacitors in series Like other electrical elements, capacitors serve…

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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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PTC Thermistor

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

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Metal Film Resistor

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

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Impedance and Reactance

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

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About the Authors

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

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Resistor Inductance

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

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Electric Field

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

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Thermistor

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

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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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Heater Resistor

What are Heater Resistors? Heater resistors are used whenever an…

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Carbon Composition Resistor

An Introduction to Carbon Composition Resistors Carbon composition…

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What Is Wye And Delta?

We learned in a previous page that resistors can be connected in…

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Electric Charge

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

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Variable Resistor

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

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Magneto Resistor

What is a Magneto Resistor Magneto resistors have a variable…

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Braking Resistor

What is a Braking Resistor? The property of resistors to dissipate…

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Shunt Resistor

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

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Trimmer Capacitor

What are trimmer capacitors? Trimmer capacitors are variable…

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Power Rating

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

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Resistor Properties

The function of resistors is to oppose the flow of electric current in…

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