3 FIND THE EQUIVALENT INDUCTANCE (IN TERMS OF L), LE BETWEEN TERMINALS A AND B

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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**Instruction for Problem Solving**  
**Title:** Inductor Network Analysis

**Objective:** Find the equivalent inductance between terminals A and B in terms of a given inductance value, L.

**Diagram Description:**

The diagram represents a network of inductors arranged between two terminals, labeled A and B. The inductors are connected as follows:

- At the top, there is one inductor labeled \(L_0\) connected longitudinally between terminal A and the junction point of two inductors.
- Below \(L_0\), there are three horizontal rows, each containing three inductors labeled \(L\) in series.
- Each row is connected in parallel to form a ladder-like structure.
- At the ends of these rows, the bottom-left inductor is connected to terminal B.

**Understanding the Setup:**

1. **Series Configuration:** Inductors in series within each row will sum up to a total inductance. For a series of three inductors, the equivalent inductance in each row is \(3L\).

2. **Parallel Configuration:** The overall equivalent inductance of the parallel rows needs to be calculated using the formula for parallel inductors:  
   \[
   \frac{1}{L_{\text{eq}}} = \frac{1}{L_1} + \frac{1}{L_2} + \ldots + \frac{1}{L_n}
   \]

3. **Overall Circuit:** After calculating \(L_{\text{eq}}\) for the parallel network, combine it with \(L_0\) in series for the final equivalent inductance between A and B.

**Solution Steps:**

1. Calculate the series inductance for each row.
2. Calculate the equivalent inductance of the three parallel branches.
3. Add \(L_0\) in series to find the total equivalent inductance.

This approach will allow you to find the overall inductance in terms of L and L_0 for the given network.
Transcribed Image Text:**Instruction for Problem Solving** **Title:** Inductor Network Analysis **Objective:** Find the equivalent inductance between terminals A and B in terms of a given inductance value, L. **Diagram Description:** The diagram represents a network of inductors arranged between two terminals, labeled A and B. The inductors are connected as follows: - At the top, there is one inductor labeled \(L_0\) connected longitudinally between terminal A and the junction point of two inductors. - Below \(L_0\), there are three horizontal rows, each containing three inductors labeled \(L\) in series. - Each row is connected in parallel to form a ladder-like structure. - At the ends of these rows, the bottom-left inductor is connected to terminal B. **Understanding the Setup:** 1. **Series Configuration:** Inductors in series within each row will sum up to a total inductance. For a series of three inductors, the equivalent inductance in each row is \(3L\). 2. **Parallel Configuration:** The overall equivalent inductance of the parallel rows needs to be calculated using the formula for parallel inductors: \[ \frac{1}{L_{\text{eq}}} = \frac{1}{L_1} + \frac{1}{L_2} + \ldots + \frac{1}{L_n} \] 3. **Overall Circuit:** After calculating \(L_{\text{eq}}\) for the parallel network, combine it with \(L_0\) in series for the final equivalent inductance between A and B. **Solution Steps:** 1. Calculate the series inductance for each row. 2. Calculate the equivalent inductance of the three parallel branches. 3. Add \(L_0\) in series to find the total equivalent inductance. This approach will allow you to find the overall inductance in terms of L and L_0 for the given network.
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