DANGERS ASSOCIATED WITH POLARITY REVERSAL ON DC APPLIANCES AND IT REMEDY

Abstract

Direct current (DC) appliances have already become an important source used in many appliances across a wide range of generating alternative power supply. Reverse polarity has destroyed so many inverters, cause fire out breaks and so on. This work is mainly concerned with dangers associated with of polarity reversal on electronics appliances and how they can cheaply be prevented and protected as the case of an inverter. This is achieved by incorporating a load relay between the battery and the inverter and a diode in series with the relay coil terminal such that a unidirectional flow of dc source is allowed.