How to Evaluate Common-Emitter Configuration in Bipolar Junction Transistors or BJTs

Common-emitter configurations are the most frequently used mode of wiring in electronic circuits with npn and pnp transistors. The article presented here evaluates typical common emitter bjt circuits which mostly involve discrete amplifiers or similar circuits. Here we discuss and analyze this configuration through plotted graphs and some interesting circuit diagrams and try to derive formulas relating the various parameters associated with this particular mode of transistor operations.