Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to give you a detailed Introduction to BC547 . It is an NPN bipolar junction transistor (BJT), mainly used for switching and current amplification. Its maximum current gain is around 800. So, let's have a detailed overview of BC 547. Introduction to BC547 BC547 is a 3-Terminal NPN Bipolar Junction Transistor(BJT), mostly used for switching purposes and current amplification. BC547 Pins(Terminals) from left to right are called: Collector. Base. Emitter. Depending on the voltage applied at Base Terminal, BC547 can operate in two states, named: Forward Biased. Reverse Biased. BC547 as Reverse Biased If Base Terminal is connected to the Ground(0V) , Collector and Emitter will act as an open switch and the ...