# ECET 220 Week 1 iLab

Published on January 2018 | Categories: Government & Politics | Downloads: 118 | Comments: 0 | Views: 1265
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Objectives: To analyze a normally biased BJT circuit comprising of a BJT and resistors and measure the circuit voltages between emitter, common, base, and collector. To theoretically calculate and verify the circuit using Ohm’s law or Kirchhoff’s law, which were learned in previous classes. Determine the voltage drop across the collector load resistance and measure the current passing through emitter and collector resistors. Determine if the collector-based junction is forward or reversed biased. Questions: What is the total resistance between the base and +Vcc?Is the base-to-emitter voltage close to 0.7 V? Is the collector-to-emitter voltage less than Vcc? Is the collector-to-emitter voltage greater than 0.3 V? How much current must be passing through the emitter resistor in mA? What is the voltage drop across the collector load resistance (VRC) in V? What is the collector current in mA? Approximately. By removing R4 and therefore changing the value of the base-to-VCC Has it changed the collector-to-emitter voltage? How? By removing R4 and therefore changing the value of the base-to-VCC Has it changed the collector current? How? By removing R4 and therefore changing the value of the base-to-VCC Has it changed the base-to-emitter voltage? By how much?

## Content

Objectives: To analyze a normally biased BJT circuit comprising of a BJT and resistors and measure the circuit voltages between emitter, common, base, and collector. To theoretically calculate and verify the circuit using Ohm’s law or Kirchhoff’s law, which were learned in previous classes. Determine the voltage drop across the collector load resistance and measure the current passing through emitter and collector resistors. Determine if the collector-based junction is forward or reversed biased. Questions: What is the total resistance between the base and +Vcc?Is the base-to-emitter voltage close to 0.7 V? Is the collector-to-emitter voltage less than Vcc? Is the collector-to-emitter voltage greater than 0.3 V? How much current must be passing through the emitter resistor in mA? What is the voltage drop across the collector load resistance (VRC) in V? What is the collector current in mA? Approximately. By removing R4 and therefore changing the value of the base-to-VCC Has it changed the collector-to-emitter voltage? How? By removing R4 and therefore changing the value of the base-to-VCC Has it changed the collector current? How? By removing R4 and therefore changing the value of the base-to-VCC Has it changed the base-to-emitter voltage? By how much?

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