PTC Thermistor

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

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Q factor

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

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Carbon Composition Resistor

An Introduction to Carbon Composition Resistors Carbon composition…

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Power Rating

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

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Electrical Resistivity

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

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Temperature Coefficient of Resistance

Resistance Changes with Temperature The temperature coefficient of…

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What Is Meant By Electrical Resistance?

Different materials react to voltage in different ways. If a material…

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Standard Resistor Power Ratings

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

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Resistor Properties

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

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Heater Resistor

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

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Thermistor

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

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What Is a Resistor?

The resistor is a passive electrical component that creates…

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NTC Thermistor

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

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Braking Resistor

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

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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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What Is Wye And Delta?

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

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Temperature Coefficient of Resistance

Resistance Changes with Temperature The temperature coefficient of…

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Tantalum Capacitor

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

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Metal Oxide Film Resistor

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

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Filter capacitor

Filter capacitors Capacitors are reactive elements, which make them…

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AC Power Analysis In Reactive Circuits

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

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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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Measurements In Electrical Engineering

Powers of Ten A numeral system is a method of using certain digits to…

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Potentiometer Taper

What is Potentiometer Taper? Potentiometer taper is the relation…

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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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Impedance and Reactance

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

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Resistor Noise

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

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Understanding Electrical Transformers

AC electrical systems make extensive use of transformers. A…

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What Is a Resistor?

The resistor is a passive electrical component that creates…

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Mica Capacitor

What are mica capacitors? Mica is a group of natural minerals. Silver…

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Potentiometer

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

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Resistor Symbols

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

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Resistor Inductance

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

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Thermistor

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

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