# Electrical Engineering

These tutorials help form some of the fundamentals you would learn in an Electrical Engineering course of study.

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### Diodes

#### May 9, 2013

A diode primer! Diode properties, types of diodes, and diode applications.

### Switch Basics

#### May 7, 2013

A tutorial on electronics' most overlooked and underappreciated component: the switch! Here we explain the difference between momentary and maintained switches and what all those acronyms (NO, NC, SPDT, SPST, ...) stand for.

### Resistors

#### April 1, 2013

A tutorial on all things resistors. What is a resistor, how do they behave in parallel/series, decoding the resistor color codes, and resistor applications.

### Pulse Width Modulation

#### February 27, 2013

An introduction to the concept of Pulse Width Modulation.

### Voltage Dividers

#### February 8, 2013

Turn a large voltage into a smaller one with voltage dividers.

### Analog to Digital Conversion

#### February 7, 2013

The world is analog. Use analog to digital conversion to help digital devices interpret the world.

### How to Power a Project

#### February 7, 2013

A tutorial to help figure out the power requirements of your project.

### What is a Circuit?

#### February 6, 2013

Every electrical project starts with a circuit. Don't know what a circuit is? We're here to help.

### Voltage, Current, Resistance, and Ohm's Law

#### February 6, 2013

Learn about Ohm's Law, one of the most fundamental equations in all electrical engineering.

### Battery Technologies

#### February 6, 2013

The basics behind the batteries used in portable electronic devices: LiPo, NiMH, coin cells, and alkaline.

### Pull-up Resistors

#### February 1, 2013

A quick introduction to pull-up resistors - whey they're important, and how/when to use them.
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## Old Tutorials

Looking for the old, archived tutorials? Head on over to the archived tutorials on the main SparkFun site.
Please be aware that the tutorials you find there are no longer actively maintained.

In 2003, CU student Nate Seidle blew a power supply in his dorm room and, in lieu of a way to order easy replacements, decided to start his own company. Since then, SparkFun has been committed to sustainably helping our world achieve electronics literacy from our headquarters in Boulder, Colorado.

No matter your vision, SparkFun's products and resources are designed to make the world of electronics more accessible. In addition to over 2,000 open source components and widgets, SparkFun offers curriculum, training and online tutorials designed to help demystify the wonderful world of embedded electronics. We're here to help you start something.