| dc.description.abstract | This project proposes a prototype of an automatic battery charger which is more
advanced than normal battery charger in today’s industry. Nowadays, battery is the most significant device being utilized in the portable product. The automatic battery charger will stop automatically to charge battery when the level of charged is full. Thus, it can extend life span of the battery. Whereas the normal battery charger do not have this kind of features. This kind of smart battery charger would work for commercial use due to
inexpensive spending budget. The charger can provide prolonged life of battery which will
prevent it overcharging as well as leaking. This battery charger projects consists of some
simple electronic component, such as capacitor, operational amplifier, relay contact, resistor
with different value, voltage regulator, timer IC and NPN transistor. Battery charge level is
displayed by Light-Emitting Diode (LED). This project is able to charge 12V battery with
different ampere hour of capacity. The proposed charger circuit is designed and simulated
by Proteus ISIS 7 Professional software. Besides that, the operation of automatic battery
charger circuit is analyzed and verified. Finally, a prototype automatic battery charger
circuit is developed. The functionality of automatic switching is observed throughout the
experimental. The analysis results found that it is able to switch off and on automatically
when battery level reached certain level. | en_US |
