Understanding Electrical Transformers

AC electrical systems make extensive use of transformers. A…

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Electrolytic Capacitor

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

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Varistor

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

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Power Factor And RMS Explained

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

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Coupling and Decoupling

Decoupling capacitors When designing a circuit, many novice engineers…

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Polymer Capacitor

What are polymer capacitors? Polymer capacitors are capacitors which…

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AC Power Analysis In Reactive Circuits

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

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Capacitors in parallel

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

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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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How To Calculate Power Factor Correction

As you now know, reactive components can cause a circuit’s power…

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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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Difference Between A Capacitor And Inductor

Capacitors A capacitor exhibits a relatively large amount of…

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Basic DC Circuit Theory

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

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Standard Resistor Power Ratings

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

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Metal Oxide Film Resistor

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

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Tantalum Capacitor

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

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Thermistor

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

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Varistor

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

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Foil Resistor

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

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Capacitors in series

Capacitors in series Like other electrical elements, capacitors serve…

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Digital Potentiometer

What is a Digital Potentiometer? A digital potentiometer (also known…

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Energy Storage

Capacitors used for energy storage Capacitors are devices which store…

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Temperature Coefficient of Resistance

Resistance Changes with Temperature The temperature coefficient of…

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Resistor Capacitance

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

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Resistor Color Code Calculator

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

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Trimmer Capacitor

What are trimmer capacitors? Trimmer capacitors are variable…

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Magneto Resistor

What is a Magneto Resistor Magneto resistors have a variable…

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Resistors in Parallel

How to Calculate the Equivalent Resistance for Resistors in Parallel?…

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What Is a Resistor?

The resistor is a passive electrical component that creates…

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Resistor Values

Standard Resistor Values In 1952, the IEC (International…

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Current limiting

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