Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Question
How would the value be obtained?
### Series Regulator with Current Limiting #### Description 1. **Figure 3** shows the series regulator from the experiment with the addition of current limiting transistors \( Q_3 \) and \( R_6 \). Assume the current limit is set to 200 mA. Select a value for \( R_6 \) that will produce this limit. Show how the value is obtained. #### Circuit Explanation The diagram presented is a series regulator circuit that includes a current limiting feature. The main components include: - **Q1 (SK3024)** and **Q2/Q3 (2N3904)**, which are transistors involved in regulating current. - **R1, R2, R3, R4,** and **R5 (1.0 kΩ)** resistors, which play roles in biasing and current limiting. - **R6 (330 Ω)** is the resistor for which you need to determine a value to achieve the specified current limit of 200 mA. - A Zener diode **(D1, 1N4733)** is used for voltage reference, maintaining a 5V output. #### How to Determine \( R_6 \) The task is to calculate the value for \( R_6 \) that will limit the current to 200 mA. To do this, you need to analyze the circuit and apply necessary calculations considering Ohm's Law and transistor operation principles. #### Figure Caption **Figure 3** – Series Regulator Circuit with Addition of Current Limiting This configuration is essential for ensuring devices connected to the output are protected from excessive current, safeguarding against potential damage.
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Transcribed Image Text:### Series Regulator with Current Limiting #### Description 1. **Figure 3** shows the series regulator from the experiment with the addition of current limiting transistors \( Q_3 \) and \( R_6 \). Assume the current limit is set to 200 mA. Select a value for \( R_6 \) that will produce this limit. Show how the value is obtained. #### Circuit Explanation The diagram presented is a series regulator circuit that includes a current limiting feature. The main components include: - **Q1 (SK3024)** and **Q2/Q3 (2N3904)**, which are transistors involved in regulating current. - **R1, R2, R3, R4,** and **R5 (1.0 kΩ)** resistors, which play roles in biasing and current limiting. - **R6 (330 Ω)** is the resistor for which you need to determine a value to achieve the specified current limit of 200 mA. - A Zener diode **(D1, 1N4733)** is used for voltage reference, maintaining a 5V output. #### How to Determine \( R_6 \) The task is to calculate the value for \( R_6 \) that will limit the current to 200 mA. To do this, you need to analyze the circuit and apply necessary calculations considering Ohm's Law and transistor operation principles. #### Figure Caption **Figure 3** – Series Regulator Circuit with Addition of Current Limiting This configuration is essential for ensuring devices connected to the output are protected from excessive current, safeguarding against potential damage.
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Step 1: Requirement

The Amplifier circuit is given as

Electrical Engineering homework question answer, step 1, image 1

here we need to limit the current through resistance R6 i.e. maximum current flow through the R6 is 200mA.


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