Exercise 1: Humidity detector We propose to study the assembly of figure 1 which allows the ignition of a red diode from a certain percentage of humidity in the air detected by a sensor. The assembly elements are: VDD 3V, R₁=1ks, R₂=10002, R3-27092. Diode D₁: VSD1 1.2V, RSD1=12 22. Transistor T₁: B=100, VCEsat 0.2V and its base VST1=0.6V, RST1=1kQ2. The value of the resistor RH depend on the air humidity's percentage (noted X) following the relation RH=30X; where R₁, is in 2 and X in %. In all numerical applications, we will suppose that B+1 B. VDD is referenced to ground. 1. Determine the expressions of the elements of the equivalent Thevenin generator (indicated on the figure) according to VDD, R₁, R₂ and RH.

Exercise 1: Humidity detector We propose to study the assembly of figure 1 which allows the ignition of a red diode from a certain percentage of humidity in the air detected by a sensor. The assembly elements are: VDD 3V, R₁=1ks, R₂=10002, R3-27092. Diode D₁: VSD1 1.2V, RSD1=12 22. Transistor T₁: B=100, VCEsat 0.2V and its base VST1=0.6V, RST1=1kQ2. The value of the resistor RH depend on the air humidity's percentage (noted X) following the relation RH=30X; where R₁, is in 2 and X in %. In all numerical applications, we will suppose that B+1 B. VDD is referenced to ground. 1. Determine the expressions of the elements of the equivalent Thevenin generator (indicated on the figure) according to VDD, R₁, R₂ and RH.

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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