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How do you drive an LED Bi color?
This blog demonstrates how to drive a bi-color LED, or any 2 LEDs, by using only one microcontroller pin. Sinking or sourcing current from the LED selects which one will light up. Setting the pin as input turns both LEDs off. Alternating between 0,1, and high-Z, both LEDs are fully controllable and even dimmable.
What is a bipolar LED?
A Bi color LED is a special type of LED which consists of two diodes connected in inverse direction to each other inside a package. A bi color LED generally consists of three terminals – a common pin and two separate pins. However, there is another type of bi color LED with two terminals called the Bipolar LED.
How does a bicolour LED work?
The Bi-color LED is a handy little component that allows two colors (red and green) in a single LED while only having two pins (cathode and anode). Similar LED’s that provide two or even three colors usually have three or four pins allowing for a wide range of mixed colors.
What is bipolar LED circuit?
A LED driver or bipolar LED driver is an electrical circuit which a regulated amount of current and voltage to a LED or LED lamp. Bipolar LED driver circuits are power supplies optimized for LEDs and are generally known as “LED drivers”.
What is a bidirectional LED?
Bi-directional or Bi Color LEDs have 2 colors in the same bulb that can be lit independently of each other by energizing the wire that wire corresponding to the color. Use these bi-directional LEDs anywhere you need an indicator light.
What is a tri color LED?
A tri-color LED is a small light with four wires. The tri-color LED actually has three tiny lights inside it. One is red, one is green, and one is blue. You can combine different amounts of red, green, and blue light to make different colors.
Can you over volt LEDs?
LEDs have a tolerance of a specific amount of reverse voltage that it can withstand but once this is exceeded, the LED can be damaged. So any excessive reverse voltage (VR) applied can cause avalanche breakdown.