Ohm’s Law

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

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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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Resistor Sizes and Packages

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

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Basic DC Circuit Theory

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

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Resistor SMD Code

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

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Q factor

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

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Capacitance

What is capacitance? Electric capacitance is the ability of a…

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AC Power Analysis In Reactive Circuits

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

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Trimpot

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

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Digital Potentiometer

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

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Dielectric Materials

Dielectric materials Dielectric materials are essentially insulators,…

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Magneto Resistor

What is a Magneto Resistor Magneto resistors have a variable…

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Resistor Properties

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

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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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Polymer Capacitor

What are polymer capacitors? Polymer capacitors are capacitors which…

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What Is a Resistor?

The resistor is a passive electrical component that creates…

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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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Ohm’s Law

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

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Understanding Electrical Transformers

AC electrical systems make extensive use of transformers. A…

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Difference Between A Capacitor And Inductor

Capacitors A capacitor exhibits a relatively large amount of…

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Resistor Capacitance

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

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Photoresistor

What are Photoresistors? Photoresistors, also known as light dependent…

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Current limiting

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Potentiometer Taper

What is Potentiometer Taper? Potentiometer taper is the relation…

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Film Capacitor

What are film capacitors? Film capacitors are capacitors which use a…

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Tantalum Capacitor

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

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Metal Film Resistor

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

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Thermistor

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

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Resistor Symbols

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

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Photoresistor

What are Photoresistors? Photoresistors, also known as light dependent…

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Mica Capacitor

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

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Varistor

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

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Carbon Composition Resistor

An Introduction to Carbon Composition Resistors Carbon composition…

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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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Digital Potentiometer

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

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Motor starting capacitor

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

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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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Resistance of a Resistor

Resistance of a Resistor The function of a resistor is to oppose the…

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PTC Thermistor

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

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Power Factor And RMS Explained

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

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Impedance and Reactance

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

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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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Electric Charge

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

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