6- For the BJT amplifier given below, Bpc = 200, use DC analysis to calculate the emitter DC current, then: a- Determine the voltage gain for this unloaded amplifier. If a load resistance of 3300 Ohm is placed on the amplifier output, what is the voltage gain. Vcc +10 V RC 3.3 kn C3 - 33 kN out IµF Vin I µF REI 330 N 10 ΚΩ RE2 330 N C2 10 µF
6- For the BJT amplifier given below, Bpc = 200, use DC analysis to calculate the emitter DC current, then: a- Determine the voltage gain for this unloaded amplifier. If a load resistance of 3300 Ohm is placed on the amplifier output, what is the voltage gain. Vcc +10 V RC 3.3 kn C3 - 33 kN out IµF Vin I µF REI 330 N 10 ΚΩ RE2 330 N C2 10 µF
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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
Transcribed Image Text:**Transcription for Educational Website:**
---
**BJT Amplifier Analysis**
**Problem 6:**
For the BJT amplifier given below, with a \( \beta_{DC} = 200 \), perform DC analysis to calculate the emitter DC current. The tasks are:
a. Determine the voltage gain for this unloaded amplifier.
b. If a load resistance of 3300 Ohms is placed on the amplifier output, what is the voltage gain?
**Circuit Diagram:**
- **Power Supply:**
- \( V_{CC} = +10 \text{ V} \)
- **Components:**
- \( R_1 = 33 \text{ k}\Omega \)
- \( R_2 = 6.8 \text{ k}\Omega \)
- \( R_C = 3.3 \text{ k}\Omega \)
- \( R_{E1} = 330 \text{ }\Omega \)
- \( R_{E2} = 120 \text{ }\Omega \)
- **Capacitors:**
- \( C_1 = 1 \mu \text{F} \)
- \( C_2 = 10 \mu \text{F} \)
- \( C_3 = 1 \mu \text{F} \)
- **Inputs and Outputs:**
- \( V_{in} \) at node before \( C_1 \)
- \( V_{out} \) after \( C_3 \)
**Description:**
The circuit is a common-emitter amplifier with a voltage divider biasing network. The supply voltage \( V_{CC} \) is 10 V. The network consists of \( R_1 \) and \( R_2 \) used for biasing, and \( R_C \), \( R_{E1} \), and \( R_{E2} \) are used for amplifier configuration.
In the provided circuit, capacitors \( C_1 \), \( C_2 \), and \( C_3 \) are coupling and bypass capacitors to ensure AC signal passage while blocking DC components. The schematic layout has \( V_{in} \) at the input side with \( C_1 \), and \( V_{out} \) on the output side with \( C_3 \).
The DC analysis will provide the emitter current necessary for calculating the voltage
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