labb3 - Lab 3 BJT Biasing and Q-Point Purpose In this lab...

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7 Lab 3 BJT Biasing and Q-Point Purpose In this lab, the characteristics of Bipolar Junction Transistor(BJT will be investigated. These include the characteristic curves(CB-Common Base, CE- Common Emitter) for the BJT. Material and Equipment NI ELVIS Regulated Power Supply 2N3904 Assorted Resistors(500 , 1k , 27k ) Theory The bipolar junction transistor(BJT) can be modeled as a current controlled current source. The circuit symbol and the pin out for the actual device can be seen in Figure 3-1. Figure 3-1: The bipolar junction transistor . As an aid in visualizing the current/voltage relationships and transistor operation, a family of static characteristics plots of collector current versus collector-base voltage for several values of emitter current are plotted. This constitute the CB(Common Base) Collector characteristics. The CE(Common Emitter) Collector characteristics constitute a family of static characteristics plots of collector current versus collector-emitter voltage for several values of base current.
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