Question 3 ### JFET Voltage Amplifier Analysis#### Figure 30-3: JFET Voltage Amplifier CircuitThe circuit diagram presents a typical JFET voltage amplifier configuration. Key components include:- **Q1:** JFET transistor with terminals labeled D (Drain), G (Gate), and S (Source).- **R1:** 1MΩ resistor connected to the gate.- **R2:** 270Ω resistor connected to the source.- **C2:** 47µF capacitor connected parallel to R2.- **R3:** 270Ω resistor connected to the drain.- **GEN:** Signal generator.- **VDD:** Power supply.#### Questions for Analysis:2. **Switch Impact Question:** Place CM switch 17 in the OFF position and CM switch 18 in the ON position. What is the effect on the circuit if the load resistor R3 is decreased? - a. Circuit gain is increased. - b. Circuit gain is not affected. - c. Circuit gain is decreased. - d. Circuit gain becomes negative.3. **Purpose of C2:** Refer to Figure 30-3. The purpose of C2 is to: - a. Control the amount of gate current. - b. Increase degenerative feedback. - c. Decrease degenerative feedback. - d. Bypass the VDD power supply.

The circuit is a common source JFET voltage amplifier.

R3 27008 C1 D G HE a1 0.022 MF GEN R1 IM R2 27002 Figure 30-3. JFET voltage amplifier 2. Place CM switch 17 in the OFF position and CM switch 18 in the ON position. What is the e load resistor R3 is decreased? a. Circuit gain is increased. b. Circuit gain is not affected. c. Circuit gain is decreased. d. Circuit gain becomes negative. 3. Refer to figure 30-3. Te purpose of C2 is to a. control the amount of gate current. b. increase degenerative feedback. c. decrease degenerative feedback. d. bypass the VDp power supply.

R3 27008 C1 D G HE a1 0.022 MF GEN R1 IM R2 27002 Figure 30-3. JFET voltage amplifier 2. Place CM switch 17 in the OFF position and CM switch 18 in the ON position. What is the e load resistor R3 is decreased? a. Circuit gain is increased. b. Circuit gain is not affected. c. Circuit gain is decreased. d. Circuit gain becomes negative. 3. Refer to figure 30-3. Te purpose of C2 is to a. control the amount of gate current. b. increase degenerative feedback. c. decrease degenerative feedback. d. bypass the VDp power supply.

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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Question

Question 3

### JFET Voltage Amplifier Analysis

#### Figure 30-3: JFET Voltage Amplifier Circuit
The circuit diagram presents a typical JFET voltage amplifier configuration. Key components include:
- **Q1:** JFET transistor with terminals labeled D (Drain), G (Gate), and S (Source).
- **R1:** 1MΩ resistor connected to the gate.
- **R2:** 270Ω resistor connected to the source.
- **C2:** 47µF capacitor connected parallel to R2.
- **R3:** 270Ω resistor connected to the drain.
- **GEN:** Signal generator.
- **VDD:** Power supply.

#### Questions for Analysis:
2. **Switch Impact Question:**
Place CM switch 17 in the OFF position and CM switch 18 in the ON position. What is the effect on the circuit if the load resistor R3 is decreased?
- a. Circuit gain is increased.
- b. Circuit gain is not affected.
- c. Circuit gain is decreased.
- d. Circuit gain becomes negative.

3. **Purpose of C2:**
Refer to Figure 30-3. The purpose of C2 is to:
- a. Control the amount of gate current.
- b. Increase degenerative feedback.
- c. Decrease degenerative feedback.
- d. Bypass the VDD power supply.

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