Transistors – English Version

Hello, I’m Uygar and this is the first English article on my blog. I’m getting started to publish my articles in English so that you can easily find information in two languages. I aim to reach techy and curious people so please don’t hesitate to ask me and always feel free to contact me. I will improve my skills and help people in order to enlighten them in this way. Let’s start.

Transistors, can be used for switching element or upgrade element. There two types of it : NPN and PNP. Both have three legs. Here are the names :

  • emitter
  • base
  • collector
Transistors are similar to a tap structure. The base part which is the lead responsible for activating the transistor is like head of a tap. It reduces or increases electricity transmission. The collector part which is the positive lead is like mains water and the emitter part which is the negative lead is like a tap sprinkler.
First of all, NPN and PNPs are exactly the same in their function, they provide amplification and/or switching capability but now let’s see the difference between PNP and NPN transistors:
PNP transistors, two diodes are reversed with respect to the NPN type giving a Positive-Negative-Positive type of configuration. Also, all the polarities for a PNP transistor are reversed which means that it “sinks” current into its Base as opposed to the NPN transistor which “sources” current through its Base. The main difference between the two types of transistors is that holes are the more important carriers for PNP transistors, whereas electrons are the important carriers for NPN transistors.
NPN transistors receive positive voltage to the collector terminal and positive voltage to the base terminal for proper operation. An NPN transistor is powered on when a sufficient current is supplied to the base of the transistor. Therefore, the base of an NPN transistor must be connected to positive voltage for current to flow into the base.
Here are some examples of PNP and NPN transistors on circuits.
PNP:
NPN:
I hope this is helpful for you guys. If you like this article, please leave a comment and share this with other people. Thanks 🙂  
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  1. Hi,

    This is very useful to understand the principles of transistors. Now I really get what it literally means : ) Thanks a lot.

    • I’m glad that you like it and find it helpful 🙂 I’m going to add more articles in English, so please keep following. Regards. 🙂