Transistor as a Switch PDF

I hope you enjoyed this little article about using a transistor as a switch. I hope I was able to make it easy to understand and factual in the same style as an encyclopaedia. The animations in this article may help visualise the theory for beginners such as Design and Technology students. I hope it helps all the students out there.

I wrote this article because my nephews often ask me, "How do you use a transistor as a switch?"


Here are some links to basic documentation to help student find the information quickly. It is always a right pain when you have to find “hFE” values of transistors, or some of the basic parameters of the components used.

  • Light-Dependent Resistor
  • ORP12

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Transistor as a Switch PDF