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Unformatted text preview: Title: Diode Circuits Richard Madison Haynie Partner: Josh Vermaas (All graphs are attached to back) Objective: Construct several circuits using transistors and observe how they function and in particular when they fail to do what is preferred. Two of the circuits built will have current gains which will be analyzed and establish how the gain depends upon a variable resistance. Through this the usefulness of transistors will be seen and when they are applicable. Single-Supply Follower: The circuit shown in figure-1 was constructed. From theory the voltage at the base is 2 1 2 150 10 5.36 130 150 B CC R k V V V R R k k = = = + + . In graph-1 clipping can be seen occurring at -4.484V when the input voltage is turned down the clipping still takes place at -4.444V which is shown in graph-2, when the max input voltage is turned down below the previous values clipping stops occurring shown in graph-3. The clipping occurs because the voltage at the base becomes less then the voltage at the emitter and the transistor...
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- Spring '08