Introduction to 2N3904, how to use 2N3904, getting started with 2N3904, how to start using 2N3904, getting started with transistor 2N3904, how to start with 2N3904 Hello everyone! I hope you will be absolutely fine and having fun. Today, I am going to give an Introduction to 2N3904. It is basically an NPN transistor made up of silicon material. It acts as a general purpose amplifier and switch. You should also have a look at Introduction to 2N2222, which is ...