Bi-color LEDs are versatile components that can display two colours, such as red and green, depending on the direction of current through the LED’s leads. Tactile switches, on the other hand, are components that provide tactile feedback when pressed, often used as input devices in electronic circuits. Combining the two components creates a bi-color LED tactile switch that can display two colours while providing a tactile response.One common example of a bi-color LED tactile switch is the red-green tact switch, which refers to a tactile switch with a bi-color LED that can display both red and green colours. This type of switch is often used as an input device in electronic circuits that require status indication or control functions. Some popular applications of red-green bi-color LED tact switches include audio equipment, telecommunication devices, medical equipment, and computer peripherals.
The red-green bi-color LED tact switch operates by combining a tactile switch with two LED chips of different colours, red and green. The tactile switch consists of a metal contact dome and a flexible membrane that is depressed when pressed. The circuitry below the membrane is designed to conduct current and register a button press. The bi-color LED is composed of two anode-cathode pairs that emit red and green light when a current is passed through them.
When designing a circuit that includes the red-green bi-color LED tact switch, it is essential to understand the electrical characteristics of each component. The tactile switch has a specific resistance, travel distance, and actuation force, which determine its feasibility and suitability for a particular application. The bi-color LED has a forward voltage, current rating, and brightness, which determine its output in different lighting conditions.
In terms of actuation force, the red-green bi-color LED tact switch typically requires a force of around 160-180g to depress the button and trigger a response. This level of force is designed to prevent accidental presses and ensure reliable operation of the switch. The switch is rated for a lifespan of up to one million actuations, which means it can be used in applications that require high durability and longevity.
One particularly useful feature of the red-green bi-color LED tact switch is its ability to display different colours depending on its state. When the switch is pressed, the red LED lights up, providing visual feedback to the user that the switch has been activated. When the switch is released, the green LED illuminates, signaling to the user that the switch is ready for another input. This feature can be used to enhance the user experience in a range of electronics applications.
Overall, the red-green bi-color LED tact switch is a reliable and versatile component that can be used in a range of input and control applications. Its combination of a tactile response and bi-color LED display makes it an effective and easy-to-use component in electronic circuit design. With its durability and longevity, it is a cost-effective option for engineers and designers who require a reliable input device with robust status indication.
Add: Taoyuan Street, Nanshan, Shenzhen