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2. For the circuit of Figure 2-6, if R₂ = 10 k2 and (a) R₁ = 1 k2, (b) R₁ = 10 kn, and (c) R₁ = 47 k2, what is the input voltage (V) to make the LED lit for each of three values of R₁ above?

2. For the circuit of Figure 2-6, if R₂ = 10 k2 and (a) R₁ = 1 k2, (b) R₁ = 10 kn, and (c) R₁ = 47 k2, what is the input voltage (V) to make the LED lit for each of three values of R₁ above?

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
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2. For the circuit of Figure 2-6, if R₂ = 10 kQ and (a) R₁ = 1 kQ, (b) R₁ = 10 kQ, and (c) R₁ = 47 k2, what is the input voltage (V) to make the LED lit for each of three values of R₁ above? +15 V 100 ΚΩ +15 V ΙΚΩ +15 V V₁ 3 6 100 ΚΩ 741 2N3904 R₂ VREF 2 +15 V M 10 ΚΩ 1N914 R₁ -15 V ΙΚΩ Figure 2-6
Transcribed Image Text:2. For the circuit of Figure 2-6, if R₂ = 10 kQ and (a) R₁ = 1 kQ, (b) R₁ = 10 kQ, and (c) R₁ = 47 k2, what is the input voltage (V) to make the LED lit for each of three values of R₁ above? +15 V 100 ΚΩ +15 V ΙΚΩ +15 V V₁ 3 6 100 ΚΩ 741 2N3904 R₂ VREF 2 +15 V M 10 ΚΩ 1N914 R₁ -15 V ΙΚΩ Figure 2-6
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