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Sketch, simulate, and share your circuits. E12 series - resistor color code examples. In the E12 series each succeeding resistor falls within the -/+ 10 % of the previous value.

E12 series - resistor color code examples

Until fairly recently, 10% tolerance resistors were the norm, but today, 5% (E24) resistors seem to be the most commonly used. They still can be found in vintage radios, old amplifiers, etc., but the price of a 5% resistor is low enough to be the standard component in all of today's electronic circuits. In precision applications, special, more expensive low-tolerance resistors are used with tolerance ratings of 2%, 1% or less. Common values for E12, 10% series resistors: .1Ω, .12Ω, .15Ω, .18Ω, .22Ω, .27Ω, .33Ω, .39Ω, .47Ω, .56Ω, .68Ω, .82Ω - 0.1Ω to 0.82Ω... 1Ω, 1.2Ω, 1.5Ω, 1.8Ω, 2.2Ω, 2.7Ω, 3.3Ω, 3.9Ω, 4.7Ω, 5.6Ω, 6.8Ω, 8.2Ω - 1ohm to 8.2ohm... 10Ω, 12Ω, 15Ω, 18Ω, 22Ω, 27Ω, 33Ω, 39Ω, 47Ω, 56Ω, 68Ω, 82Ω - 10ohm to 82ohm... 1k, 1.2k, 1.5k, 1.8k, 2.2k, 2.7k, 3.3k, 3.9k, 4.7k, 5.6k, 6.8k, 8.2k - 1k to 8.2k resistors... 10k, 12k, 15k, 18k, 22k, 27k, 33k, 39k, 47k, 56k, 68k, 82k - 10k to 82k resistors...

Resistor Color Code Calculator. Seeking Wisdom. Get the Grammar Right I had a little meltdown this week after reading about 30 of those silly pictures on Facebook that people put the funny captions on… well, they would be funny if they were grammatically correct.

Seeking Wisdom

I just couldn’t take it any longer, so I had to post a comment. Then, today, I saw this very cool graphic from the great folks at and thought I’d share it here. Whether you are sending a text, posting on Facebook, or writing a paper for one of my classes, taking the time to keep your writing grammatically correct is important on multiple levels. Most importantly, it can separate you from the rest of illiterate horde pretending they know what they’re doing out there.

Ohm’s Law Calculators Online Some students have problems visualizing the application of Ohm’s Law and the equations for voltage, current, resistance, and power. *The use of these tools to get homework and practice answers will not help make you smarter or promote understanding! Seeking Wisdom » resistor color codes. As a teacher, I’m always on the lookout for new and interesting ways to promote learning in my classes.

Seeking Wisdom » resistor color codes

As a geek, its cool to find ways to do that with technology. I recently found out about an awesome website,, that serves as a place for teachers of all disciplines to share lessons and information. During my review of that site, I found a few games that will help students learning the basics of electronics reinforce that information. Nick Reeder, of Sinclair Community College in Ohio, has come up with some “Challenge” games that I really like: The Metric-Prefix Challenge helps students practice and learn their metric prefixes. Test equipment is essential to troubleshooting and observing electronic circuits. Understanding and remembering resistor color codes is critical to successful circuit analysis. Another very cool tool, from David Shaheen at Owen Community College, is the Resistor Placement Game. Graphical Resistance Calculator.

This JavaScript-based web app comes from my JavaScript Bible books (dating back to the very first edition with a few upgrades a long time ago).

Graphical Resistance Calculator

Although I have removed other book examples from this web site, this page remains the most popular destination within — presumably as a resource for students of electricity/electronics and my fellow radio geeks. Enjoy! Illustration Copyright 1996 Danny Goodman (AE9F). All Rights Reserved. Datasheet Archive 350 Million Datasheets from 8500 Manufacturers.