Transistor Curve Tracer for BJTs using Basic Electronic Devices

Term Project

Posted by: Ghulam Abbas
Posted on: 24 October 2014

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Team Member

  • Beenish Aman
  • Meena Nadeem



  • Department: Electrical Engineering
  • University: IST Institute Of Space Technology
  • City: Islamabad
  • Country: Pakistan


02 Feb 2013 to 02 Mar 2013


In this project we have to build circuits which will help to identify bipolar junction transistors (BJT). If the transistor is PNP or NPN, it’s good or bad, its collector current and base current and the voltage across collector-emitter. If the green LED glows in the circuit, it is PNP BJT and red LED glows for NPN BJT. If none of the LED glows it is a bad transistor.

In Circuit 2, the DPDT switch first shows NPN and other shows PNP. The dial will display value of VCE when probes are connected across collector and emitter we have used or voltage measurement and current measurement.


Detail Here!

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