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Understanding Tricolor LEDs: Common Anode vs Common Cathode

When working with tricolor LEDs, understanding their configuration is crucial to ensure proper function. In this article, we will delve into the details of common anode and common cathode configurations for tricolor LEDs.

Firstly, let's define what a tricolor LED is. It refers to an LED that has three legs or leads, allowing it to produce different colors by manipulating its connections. Unlike RGB LEDs, which also produce yellow when both red and green are lit, RG LEDs can produce this color combination.

The text mentions the use of Bivar R50RGB-F-0160 LED's, which were mounted next to each other to create a slowly changing background color for an LED display. This was achieved by using oscillators with different frequencies to control the red, green, and blue LEDs.

In terms of circuitry, tricolor LEDs require additional transistors to function properly. The choice between common anode or common cathode configuration depends on the specific type of LED used. Common anode is more challenging to implement, as it requires the use of PNP transistors or additional components to reverse the supply voltage.

On the other hand, common cathode tricolor LEDs are easier to work with, and their circuitry can be easily implemented using a simple circuit design. For those who prefer a different approach, connecting a single color leg to ground and the other two legs to separate resistors allows for mixing of colors to produce yellow.

In conclusion, understanding the configuration of your tricolor LED is vital for successful implementation. Whether you're working with common anode or common cathode, having knowledge of the correct wiring and component selection will ensure a smooth and efficient project outcome.

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