Introduction to electrical and computer engineering ENG1450 All Labs

ENG 1450 Introduction to Electrical and Computer Engineering

Lab 5

Transistor, Motor with Optical Control



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Build Quality (F / W / O) _________ _________________________
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ENG 1450 - Lab 5 October 23, 2016-v1 Page 1

, Part A: The Transistor
Note: For the following measurements you will need two separate negative voltage sources,
which can be obtained by using two project boards.

Figure 1 shows the pin-out of the TIP107 PNP transistor that you will use in this lab.




Figure 1: Pin-out of the TIP107 transistor and its circuit symbol.


Build the circuit depicted in Figure 2. Select RB = 3.3 kΩ, RC = 270 Ω, VCC = -8 V.




Figure 2: Bias circuit of the transistor.


Depending on the voltage between the Emitter and Base (VEB), the transistor will be on or off,
meaning the current IC will be 0 A (or very small).




ENG 1450 - Lab 5 October 23, 2016-v1 Page 2