TILI Automation

 Cables are a very important part of industrial automation. You must know which cable to use and where to use it so that there is no goof-up in the instrument part or electrical part. There are many types of cables used, but it is important to categorize them based on various sections. Because it is not possible to define every type in a single section. In this post, we will focus on two types of cables – single core and multi-core. Here, we will see the difference between both of them. What is a Single Core Cable? Cables come with conductors and insulators. Conductors are the ones that carry current and insulators are the ones that insulate or protect the conductor from the external environment. In a single-core cable, as the name defines, only a single conductor or wire is used inside a cable. Basically, it will simply consist of a single wire insulated in an external coating layer. Because a single conductor is used, it can be used with a large and thick diameter. So, it is said...

 What is a Photodiode? It is a form of light sensor that converts light energy into electrical energy (voltage or current). Photodiode is a type of semi conducting device with PN junction. Between the p (positive) and n (negative) layers, an intrinsic layer is present. The photo diode accepts light energy as input to generate electric current. It is also called as Photodetector, Photo Sensor or Light Detector. Photodiode operates in reverse bias condition i.e., the p – side of the photodiode is connected with negative terminal of battery (or the power supply) and n – side to the positive terminal of battery. Typical photodiode materials are Silicon, Germanium, Indium Gallium Arsenide Phosphide and Indium gallium arsenide. Internally, a photodiode has optical filters, built in lens and a surface area. When surface area of photodiode increases, it results in less response time. Few photo diodes will look like Light Emitting Diode (LED). It has two terminals as shown below. The smalle...