LOW COST 50 WATTS INVERTER FOR FLUORESCENT LAMP USING ELECTRONIC CHOKE CONTROLLED BY TIMER

Inverters are devices which can convert electrical energy form DC to AC. They are available in various sizes and in different VA ratings, from low power functions such as powering a car radio to that of backing up a building in case of power outage. In this work an attempt has been made in designing a low cost, low Power Inverter using Electronic Choke Controlled by Timer Circuit. This gives the backup during power failure and also provides a sophisticated user access. The purpose of this DC/AC inverter is typically to take DC power supplied by a battery, to light a fluorescent lamp of 50 watts operating at 50 Hz, emulating the power available at an ordinary household electrical outlet. By suitably adjusting the timer control parameters, user can turn ON/OFF of lamp automatically. The timer management is very essential for any organization or institution. Most of them usually divide the functional day into segments of working hours and other activities. In educational institutions the working hours are again divided into periods. Most of them use alarms to indicate the beginning or the end of a time segment. This is a repeating process and may rarely change day to day, so it justifies that this process could be automated