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9.15 One of the more interesting applications of a diode, based on the diode equation, is an electronic thermometer. The concept is based on the empirical observation that if the current through a diode is nearly constant, the offset voltage is nearly a linear function of the temperature, as shown in Figure P9.15(a). a. Show that ip in the circuit of Figure P9.15(b) is nearly constant in the face of variations in the diode voltage, vp. This can be done by computing the percent change in in for a given percent change in vp. Assume that vp changes by 10 percent, from 0.6 to 0.66 V. b. On the basis of the graph of Figure P9.15(a), write an equation for vp (T°) of the form vp = a T° +B V,(V) 0.8 0.6 0.4 0.2 0° 50° 100° T ("C) (a) 10 k2 15 V

9.15 One of the more interesting applications of a diode, based on the diode equation, is an electronic thermometer. The concept is based on the empirical observation that if the current through a diode is nearly constant, the offset voltage is nearly a linear function of the temperature, as shown in Figure P9.15(a). a. Show that ip in the circuit of Figure P9.15(b) is nearly constant in the face of variations in the diode voltage, vp. This can be done by computing the percent change in in for a given percent change in vp. Assume that vp changes by 10 percent, from 0.6 to 0.66 V. b. On the basis of the graph of Figure P9.15(a), write an equation for vp (T°) of the form vp = a T° +B V,(V) 0.8 0.6 0.4 0.2 0° 50° 100° T ("C) (a) 10 k2 15 V

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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9.15 One of the more interesting applications of a diode, based on the diode equation, is an electronic thermometer. The concept is based on the empirical observation that if the current through a diode is nearly constant, the offset voltage is nearly a linear function of the temperature, as shown in Figure P9.15(a). a. Show that ip in the circuit of Figure P9.15(b) is nearly constant in the face of variations in the diode voltage, vp. This can be done by computing the percent change in in for a given percent change in vp. Assume that vp changes by 10 percent, from 0.6 to 0.66 V. b. On the basis of the graph of Figure P9.15(a), write an equation for vp (T°) of the form vp = a T° +B V,(V) 0.8 0.6 0.4 0.2 0° 50° 100° T ("C) (a) 10 k2 15 V
Transcribed Image Text:9.15 One of the more interesting applications of a diode, based on the diode equation, is an electronic thermometer. The concept is based on the empirical observation that if the current through a diode is nearly constant, the offset voltage is nearly a linear function of the temperature, as shown in Figure P9.15(a). a. Show that ip in the circuit of Figure P9.15(b) is nearly constant in the face of variations in the diode voltage, vp. This can be done by computing the percent change in in for a given percent change in vp. Assume that vp changes by 10 percent, from 0.6 to 0.66 V. b. On the basis of the graph of Figure P9.15(a), write an equation for vp (T°) of the form vp = a T° +B V,(V) 0.8 0.6 0.4 0.2 0° 50° 100° T ("C) (a) 10 k2 15 V
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