Rabyte Electronic

Optoelectronics is the study and application of light-emitting or light-detecting devices. It's widely considered a sub-discipline of photonics. Photonics refers to the study and application of the physical science of light. Optoelectronics is quickly becoming a fast-emerging technology field that consists of applying electronic devices to source, detect, and control light. These devices can be a part of many applications like military services, automatic access control systems, telecommunications, medical equipment, and more. Since this field is so broad, the range of devices that fall under optoelectronics is vast, including image pick-up devices, LEDs and elements, information displays, optical storage, remote sensing systems, and optical communication systems. Examples of optoelectronic devices consist of Telecommunication laser Optical fiber Blue laser LED traffic lights Photodiodes Solar cells The most common optoelectronic devices that feature direct conversion between elect...

The light output of LEDs can be controlled by varying the amount of current flowing through the LED( within defined limits) or by turning the LED on and off via pulse width modulation( PWM). LED drivers like the ALD6 series can provide “ dimming ” by both of these popular methods. The drawing above shows the two light-dimming styles included in the ALD6 LED driver. It's permitted to use a combination of both of these methods simultaneously in  Opto Electronics . The “ Rbr ” is an external variable 10kohm resistor input. By varying this potentiometer from 1k to 10k ohms, analog dimming control is achieved. In this case, the maximum LED brightness occurs when the pot is set to 10k ohms. This same input can operate with variable analog voltage ranging from1.6 to3.8- volts. In some applications this input can be connected to a temperature sensing device which could reduce the current inflow through the LEDs as the temperature rises, providing a means for temperature compensation. The ...