First Day

Hi
I am Amira. I am now third year student who's taking degree of electronic engineering major in telecommunication at Universiti Teknikal Malaysia Melaka (UTeM).This blog is created as a journal to report my daily life as a practical student in HIIS (Hitech Integrated Innovation Solution Sdn.Bhd) or known as UTeM Holdings. Means that, I will report all the activities and knowledge that I gain during the period of this industrial training. For your information, HIIS was established on December 2011 which is organized by En. Mazran Bin Esro and Eng. Siva Kumar a/l Subramaniam.

Encik Mazran Bin Esro

Engr. Siva Kumar a/l Subramaniam

Today is my first day doing practical in HIIS. After registration process as practical student has done, we were given brief about the company such as its history, project and regulations by Encik Mazran. Then,  I was supervise by Eng. Siva Kumar about electronic components. One of the electronic component that he explain was relay. He also emphasized  the importance of basic knowledge of electronics and  how important to get familiar with electronics components which is required for engineers. 


There are two categories of electronic components:
i- Surface Mount Technology (SMT)
ii-Through-Hole Technology


Surface Mount Technology (SMT)

Components which is mounted directly onto the surface of printed circuit board (PCBs). It has largerly replaced the through hole technology construction method. The components is usually made smaller than its through hole counterpart because it has leads or no leads at all. some of the types are components with short pins  leads of various styles, flat contacts, matrix of solder balls (BGAs) and terminations on the body of the component.


Though-Hole Technology

components which involved the used of leads that inserted into holes drilled in PCBs and soldered topads on the opposite side either by manual assembly by hand placement or by the used of automated inserted mount machines. Through hole mounting provides strong mechanical bonds when compared to SMT technique.


Relay

Is an electrically operated switch usually by electromagnetics principle to operate switching mechanism mechanically. It is used  where it is necessary to control a circuit by a low power signal or circuit that must be controlled by one signal. Relays were used extensively in telephone exchanges.
Operation:
When an electric current is passed through the coil it generates a magnetic field that activates the armature, and the consequent movement of the movable contacts either makes or breaks a connection with a fixed contact. If the set of contacts was closed when the relay was de-energized, then the movement opens the contacts and breaks the connection, and vice versa if the contacts were open. When the current to the coil is switched off, the armature is returned by a force, approximately half as strong as the magnetic force, to its relaxed position.