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25 Determine the V – I characteristics of the voltage-controlled resistance shown in the circuit of Figure P11.25.

25 Determine the V – I characteristics of the voltage-controlled resistance shown in the circuit of Figure P11.25.

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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25 Determine the V – I characteristics of the voltage-controlled resistance shown in the circuit of Figure P11.25.
Transcribed Image Text:25 Determine the V – I characteristics of the voltage-controlled resistance shown in the circuit of Figure P11.25.
Expert Solution
Step 1

Calculating voltage at the gate terminal with respect to source terminal.

VGS=VG-VSVGS=VD-VSVGS=VDSVGS=V

Here, VGS is equal to drain to source voltage.

 

Step 2

Condition for Mosfet is in saturation region VGS > VT

Mosfet current in saturation region

ID1=KVGS-VT2I=KV-VT2

Let us assume K = 1

I=V-VT2

 

Step 3

Taking different values of V for different value of I

Let V = VT

I=V-VT2I=VT-VT2I=0

Taking V = 2VT 

I=2VT-VT2I=VT2

 

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