Introduction: How to Identify PNP and NPN Transistors (with a Simple Circuit)

In this project I’ll make one of the easiest PNP and NPN circuit identifiers ever. You’ll see how easy It is to make one! I've also posted on my website a bit of the theory about PNP and NPN Transistors I would recommend you to read it  first.

This project is great to learn more about:
  • Transistors
  • Simple DIY Circuits
  • PNP and NPN Transistors
If you want more Electronics Projects and Tips make sure you visit My website: http://randomnerdtutorials.com/
If you just want to see my project working you can see this video:

 

Step 1: Parts Required

1x LED
1x Pushbutton
1x 1k Ohm Resistor
1x 10k Ohm Resistor
1x Breadboard
1x 9V Battery (and Battery Clip)
Some Wires

Step 2: Schematics

Just follow these Schematics and you'll be fine! :)

Step 3: Optional Step

I've decided to Solder everything in a Stripboard and that's the result. This step is optional you might want to use only the breadboard.

Step 4: Final Product

Make sure you visit my website for more Arduino Projects and Electronics tipshttp://randomnerdtutorials.com/
T
hanks for reading I really appreciate you time and support.
Please share my work.
 

Comments

author
RichardR171 (author)2016-07-18

Which legs are collector, base, and emitter?
Which resistors go where?

author
laith mohamed (author)2015-09-05

That is awesome

author
kailash.mehendale.7 (author)2015-04-11

This was helpful for me. Thanks.

author
ashbash100 (author)2014-11-20

Just for other people, if the light turns on without you pressing the button, it is PNP. Otherwise, it is NPN.

author
Abirboy (author)2013-10-21

this is super helpful for me ..Thanks

author
RuiSantos (author)Abirboy2013-10-23

Thanks for taking the time to leave your feedback!
I'm glad I could help.

author
crazy_thiago (author)2013-07-30

The slide swith on bread board on "opitonal step"
Is to on/off all sistem?

About This Instructable

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Bio: Author, Blogger, Electronics Enthusiast and Entrepreneur. For complete Electronics Projects and Tutorials go to: http://randomnerdtutorials.com/start-here
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