i was wanting to know if anyone knows how to choose the value of beta when trying to design a simple transistor circuit? lets say we're using a 2n3904 NPN 12Vcc with with three resistors RC, RB, and RE. how do i determine what value of beta i should use? i want to determine beta so i can add that into my formulas (β=IC/IB) when trying to find what base current is needed for saturartion or cutoff. im trying to better understand the beta aspect of a bjt. i know how beta is changed by temp and where it is on the data sheets but i dont exactly fully understand how i can use it in my calculations.