Electrical Notes

  Introduction: We are heavily dependent upon appliances that run on electricity such as fans, lights, AC, fridge, Computer and so on. Whenever there is a power cut, electricity supply to these appliances is cut off and they stop working. However, if we have backup supply devices such as UPS and inverter, we can ensure Power supply to appliances and not bothered with power cuts. However, people remain confused with the difference between a UPS and an inverter because UPS and inverters both are providing back up power supplies during main power outage. Inverters are preferred more for general electric appliances whose working does not get affected by extended delays in power supply. UPS are used for electronics appliances such as computer, servers, workstations, Medical Equipment which perform critical task and cannot tolerate delays in power supply. An off-line ups (the standard) switch to the batteries in 3 to 8 milliseconds, after the main power has been lost. While Inverter chan...

  Introduction: In this modern society, electricity has vital role on the most daily activities for domestic and industrial utilization of electric power for operations. An inverter is used to provide uninterrupted 220V AC supply to the load connected to its output socket. It provides constant AC supply at its output socket, even when the AC mains supply is not available. There are many factors, which are affecting on selecting of the best inverter for our application Block Diagram of Inverter: Power inverter is a device that converts electrical power from DC form to AC form using electronic circuits. It is typical application is to convert battery voltage into conventional household AC voltage to use Equipments, when an AC power is not available. There are two methods, in which the low voltage DC power is inserted into AC Power. In First Method first is the conversion of the low voltage DC power to a high voltage DC source, an then It is the conversion of the high DC source to an ...

  Comparison of Inverters:   Comparison of Different Type of  Inverter   Square Wave Stepped  Sine Wave Pure Sine Wave Safety of Appliances Less Moderate High Life of Appliances Less Moderate High Battery Life Less Moderate High Noise Level High Moderate Normal Heat generation High Low Normal Suitability for appliances No Not recommended for prolonged use Yes                 How to Select Batteries for Inverter Batter is the vital part of inverter. Performance and life of an inverter is greatly depends upon battery. There are three types of batteries available in market. Flat Plate (Lead Acid ) Battery, Tubular Battery Maintenance Free Battery. Without getting too much into details, all we can say is that Tubular Batteries are the best choice for inverters. They may cost slightly more than Flat Plate, but they will last longer. Maintenance Free batteries may sound good, but they have lesser life (4-5 years as compared to 7...

  How to select Right Inverter Before buying an inverter for, It is very important to understand what is the right inverter for our requirement for that we do understand the basics criteria of Inverter. In order to make a good estimate of your power needs, you’ll need to take a look at all of the devices you plan on plugging into your new inverter. If we only need to use one device at a time, then that’s the only one you’ll need to look at. However, you’ll need to add together the numbers from multiple devices (like an LCD screen and a video game system) if you plan on using them at the same time. (A) Power Requirement: One of the most important factors that we must know before buying an inverter is Power requirement. Power requirement means all electrical appliances (like fan, tube lights, television,Pumps, CFL etc.), we want to run at the time of power failure. The power requirement is simply addition of the power consumed by various electrical equipments. The thing we must under...