Mostly we need a 5-volt power supply for micro-controllers, digital chips, op-amps, etc. So, we want a small as well as reliable 5v power supply. The article is completely about such a type of power supply. We are using LM-7805 IC to build a 5-volt power supply. 7805 is a 5V fixed three-terminal voltage regulator. … Continue reading 5 Volt Power Supply Using LM 7805 IC