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+20 V Rc RE -20 V Vc An NPN transistor in active mode has the following characteristics: B = 150 Use the value of VBE found in the previous problem and determine the values of Rc and Rå so that Vc = 6 V and lc = 3 mA.

+20 V Rc RE -20 V Vc An NPN transistor in active mode has the following characteristics: B = 150 Use the value of VBE found in the previous problem and determine the values of Rc and Rå so that Vc = 6 V and lc = 3 mA.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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VBE=0.727V
### Understanding NPN Transistor Configuration #### Circuit Diagram Explanation The diagram represents a basic NPN transistor circuit in active mode. It includes: - A resistor \( R_C \) connected to the collector of the transistor, with a supply voltage of \( +20 \, \text{V} \). - The collector voltage is labeled as \( V_C \). - A resistor \( R_E \) connected to the emitter, leading to a voltage of \( -20 \, \text{V} \). #### Transistor Characteristics The NPN transistor has the following characteristics in active mode: - Current gain (\( \beta \)): 150 #### Problem Statement Using the previously found value of \( V_{BE} \), determine the resistor values \( R_C \) and \( R_E \) such that: - The collector voltage \( V_C \) is \( 6 \, \text{V} \). - The collector current \( I_C \) is \( 3 \, \text{mA} \). This problem involves applying known equations and principles regarding transistor operation to solve for the unknown resistances.
Transcribed Image Text:### Understanding NPN Transistor Configuration #### Circuit Diagram Explanation The diagram represents a basic NPN transistor circuit in active mode. It includes: - A resistor \( R_C \) connected to the collector of the transistor, with a supply voltage of \( +20 \, \text{V} \). - The collector voltage is labeled as \( V_C \). - A resistor \( R_E \) connected to the emitter, leading to a voltage of \( -20 \, \text{V} \). #### Transistor Characteristics The NPN transistor has the following characteristics in active mode: - Current gain (\( \beta \)): 150 #### Problem Statement Using the previously found value of \( V_{BE} \), determine the resistor values \( R_C \) and \( R_E \) such that: - The collector voltage \( V_C \) is \( 6 \, \text{V} \). - The collector current \( I_C \) is \( 3 \, \text{mA} \). This problem involves applying known equations and principles regarding transistor operation to solve for the unknown resistances.
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