1.8AD

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LED Indication - Discrete

Light-emitting-diodes (LEDs) have become the favored choice for light-indications, and for many applications, the standard-sized discrete LEDs of the 1.8AD (1 Amp 8 Abbreviation Diverting) type are the most popular choice. By their nature, discrete LEDs offer an easy to read, color-coded representation of the state of a system at any given moment. In this article, we take a look at the 1.8AD application field and working principle of this popular LED choice.

Application Field

1.8AD discrete LEDs are widely used in a variety of industries, such as automotive, audio/video, machine controls, packaging, gaming, and industrial instrumentation. The most common application field is machine controls. For the automotive industry, it is perfect for dashboard illumination or brake lights, or even lighting of locks and window trim. They are also widely used in gaming machines on the tables, or prizes stand. In the audio/video industry, they are great for engaging and active visuals, or for simple, easy-to-understand visual displays.

Working Principle

The working principle of the 1.8AD discrete LED is quite simple. This device consists of two basic components – the LED itself, and a resistor. When the device is connected to the appropriate power source, the LED begins to emit light. In situations where the LED is intended for constant on/off purposes, such as the LED on a gaming table, the resistance is adjusted and the light emission can be controlled precisely.

The resistor installed along with the LED serves several purposes, the first of which is to limit the current flowing through the LED. Not doing so can significantly reduce the lifespan of the LED itself, as the current flowing through it becomes too high and eventually burns it out. The same resistance also determines the brightness of the LED – the higher the resistance, the less energy passes through and the less intense the light emission. The same applies for the opposite situation.

LED Displays

In certain situations, it is necessary to have multiple LEDs in one display for a more visually appealing indication of a system’s state. This can be achieved by installing the multiple LEDs in series, either connected in parallel or in a cluster. By doing so, it is possible to achieve a much more elegant look while still being able to correctly read the system state at any given moment. Furthermore, the current limitation resistor can be positioned once, so as to properly pass power to all the LEDs connected in series.

All in all, the 1.8AD discrete LEDs are incredibly versatile and offer the user the best of both worlds – a reliable indication of a system’s state and at the same time a stylish and aesthetically pleasing look.

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