Handwrite and step by step solution Consider the meander-line resistor shown (top view)at right. The device is to be fabricated using anevaporated film of nichrome with p= 100μ cm.Find:a.The required film thickness in order to achieve asheet resistance of r = 509/.The total resistance of the structure,Wa.b. The minimum line width w that will keep the current density below a criticalvalue of 105 A/cm² if the maximum applied voltage is 10 V.

Answered: Consider the meander-line resistor…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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Handwrite and step by step solution

Consider the meander-line resistor shown (top view)
at right. The device is to be fabricated using an
evaporated film of nichrome with p= 100μ cm.
Find:
a.
The required film thickness in order to achieve a
sheet resistance of r = 509/.
The total resistance of the structure,
W
a.
b. The minimum line width w that will keep the current density below a critical
value of 105 A/cm² if the maximum applied voltage is 10 V.

Expert Solution

Step 1

Current density, which is measured in amperes per square meter, is the quantity of electric current flowing through a unit of cross-sectional area. The current density will increase as the conductor's current increases. With the exception of the corner squares, a meander resistor may be compared to a bar resistor (right-angle bends).
The resistance value at which a certain component may function at both full-rated power and full-rated voltage is known as the critical resistance value. In addition to the power rating, the majority of resistor manufacturers mention a maximum operating voltage.

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