

The polarity of voltages applied for each junction is shown in the figure below:.The voltage between the base and the emitter (VBE), is negative at the emitter and positive at the base terminal for its NPN construction.When the input voltage is applied at its Base terminal, some amount of current starts to flow from the base to the emitter and controls the current at the collector.At the border of the P and N, a depletion region is created, which blocks the flow of charge carriers from one region to another.As we know BC547 is an NPN transistor, so in its design, a P-region(Base) is sandwiched between two N-type regions.
#BC548 PINOUT HOW TO#
In the last section, we will design a Proteus Simulation of BC547, which will give you a better understanding of How to use these pins of BC547.The properly labeled pin configuration diagram of BC 547 along with its animation is shown in the figure given below.All of these three pins along with their symbols are shown in the below table:.BC547 Pinout consists of 3 pins in total, named: Collector(C), Base(B) and Emitter(E).Now, let's have a look at the pinout of BC547:.
#BC548 PINOUT DOWNLOAD#

The maximum Collector current limit of BC547 is 110mA, so the load must be lower than that.In Forward Biased State, the current will start flowing from Collector to Emitter.If a HIGH signal(normally 5V) is provided at the Base Terminal, Collector and Emitter will start acting as a closed switch and the transistor is said to be acting as Forward Biased.In a Reverse Biased State, no current will flow through the transistor.

