AVR and 8051 drive 2-colour LEDs
Design Tip

Two-colour LEDs consist of two LED chips, usually red and green, encapsulated in one 2- or 3-wire case. Inside the 2-wire case two LED chips are connected in anti-parallel, so the LED colour gets determined by the current direction. In the 3-wire case two LEDs share a common wire for their cathodes, while the anodes are connected separately. The latter allows setting different currents through the diodes and producing not only a pure red or green light but also various colour blends.
Continue reading this Elektor article?
- Unlimited access to online Member Only articles
- 3 new editions Elektor Magazine (digital)
- More than 5000 Gerber files
- 20% member discount on e-books (at elektor.com)
- 10% member discount on Products (at elektor.com)
Stops Automatically.
What is Members Only
Elektor is committed to providing high-quality content on electronics, catering to tens of thousands of paying members. As part of this commitment, Elektor has launched Premium, an initiative that offers exclusive online articles to members sometimes even before they appear in the magazine.
Every day, members can access in-depth articles that showcase the best of Elektor's premium content.
This initiative aims to reward members with early access. Once logged in, members can easily enjoy this exclusive content and engage in discussions about featured projects. While Premium adds to the existing resources available, Elektor will continue to provide a wealth of free information.
Join the Elektor community today to take advantage of Premium and other benefits!
Discussion (0 comments)