Introduction A laser diode is a semiconductor device that generates coherent light of high intensity when the electric current is applied to it. The word LASER is actually an acronym for Light Amplification by Stimulated Emission of Radiation. It converts electrical energy into a light beam. It’s like a light-emitting diode (LED) with a PN …
Everyone knows if you need light and you have electricity you only need a bulb and an electrician to install it. You were born post electricity discovery and it may not mean a lot to you what it does. If you have a bulb you know it’s a matter of pressing a switch for you …
Introduction A quartz watch is a watch that uses an electronic oscillator that is regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with a very precise frequency so that quartz watches are at least an order of magnitude more accurate than mechanical watches. Quartz is a specific form of …
One of the key areas in engineering is instrumentation. Engineers want to monitor and control the parameters of machines so that they can work efficiently. A meter is a device used to measure the quantity of a given parameter. Technicians in their work need to know not only the presence given by indicators but as …
One of the most critical sites in the electrical power grid is a substation. Within the overhead or underground cable that supplies power to your home or business, you can be sure it comes from a substation located at a certain place. In simple terms, an electricity network consists of generation, transmission, and distribution. A …
Switchgear is an electrical device that connects and disconnects electrical equipment or circuit from the power supply. It conducts interrupts the flow of electrical power. In its initial design, it was a mechanical switch that physically separated or joined two or more conductors. Development over time has made switch gears offer control, protection, and isolation, …
Transformer is a familiar word at least to the ears of ordinary folks in the streets. What is not known to many is what a transformer is. The post will explain what a transformer is, what low voltage means, factors to consider in acquiring one and the applications. A transformer is a device that changes …
Introduction Electricity is complex system and in order to understand it, you will have to break it down into subsystems and farther into components. In our discussion today, we will look at busbars. A busbar is a metallic strip or bar that is a good conductor of electricity that ‘transports’ power from incoming feeders to …
DEFINITION A photodiode is a semiconductor device that converts light into an electric current. In the presence of light, the diode generates charge carriers that flow into a current from one terminal to the other. It can also be referred to as a photodetector or photosensor. OPERATION The special diode operates by the principle of …
A transformer is electrical equipment or device that converts voltage from one voltage level to another while ideally retaining input and output power the same. There are various types of transformers depending on the basis of classification. To broad classification is on construction and purpose or use. On the basis of purpose, we have; power …