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Lab8 - ECE 322L Microelectronics Lab Lab#8 Bipolar Logic...

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ECE 322L: Microelectronics Lab Lab #8: Bipolar Logic Objectives: Learn to design logic gates using NPN transistors with resistive loads. Understand the differences in current flows between the NMOS and NPN logic circuits. Materials: Voltmeter 12V Voltage supply Solderless breadboard Hookup wire One 3.3k and two 1k resistors Two 2N2222A NPN transistors Setup: Construct the circuit shown below using a 2N2222A as the NPN transistor.
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Background: 2N2222A NPN transistor : Hold the 2N2222A transistor with the wire leads pointing toward you and the metal tab on the case pointing up. Clockwise from the tab you will find the transistor emitter (E), base (B), and collector (C), respectively. The transistors in this lab will be operating either in saturation (on) or cutoff (off). When an input voltage applied to the base is high (5V in this lab), the base-emitter junction is forward biased. The base-collector junction will also be forward biased since current flow through the resistor will cause the collector voltage to drop below that of the power rail.
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