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The circuit shown above is the ac model for a Common Collector amplifier. Determine the value of the following circuit elements. a) ro  b) RE  c) RL d) gm e) RB f) rπ  g) Rsig

The circuit shown above is the ac model for a Common Collector amplifier. Determine the value of the following circuit elements. a) ro  b) RE  c) RL d) gm e) RB f) rπ  g) Rsig

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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The circuit shown above is the ac model for a Common Collector amplifier. Determine the value of the following circuit elements.

a) ro 

b) RE 

c) RL

d) gm

e) RB

f) rπ 

g) Rsig

 

### Circuit Analysis: Voltage Controlled Current Source (VCCS) #### Description The circuit diagram above features a Voltage Controlled Current Source (VCCS). It is a common component in analog circuits, where the output current is linearly dependent on the input voltage. #### Components: 1. **Voltage Source (Vsig):** - Represents the input signal voltage. 2. **Resistors:** - **50Ω**, **12kΩ**, **5.2kΩ**, **50kΩ**, **5kΩ**, **20kΩ**: These resistors create various pathways for the current flow and determine the voltage at different points in the circuit. 3. **Voltage Controlled Current Source (0.04Vᵨᵢ):** - The controlled source's output current is 0.04 times a certain voltage (Vᵨᵢ) in the circuit. This component adds a level of feedback and control over the circuit's operation. #### Circuit Layout: - The **50Ω** and **12kΩ** resistors are in series with the voltage source (Vsig). - A **5.2kΩ** resistor is connected to the node between the **12kΩ** resistor and the VCCS, providing a path to ground. - On the right side of the VCCS, there are three resistors (**50kΩ**, **5kΩ**, and **20kΩ**) in parallel, also connected to ground. This setup influences the voltage (Vᵨᵢ) controlling the current source. #### Purpose: Such a configuration could be used for amplification or signal modulation purposes in analog electronics. The voltage across certain components determines the control of the current, affecting output voltage or current at other points in the circuit. Understanding the interactions between these components helps in designing circuits for specific electronics applications such as filters, amplifiers, and oscillators.
Transcribed Image Text:### Circuit Analysis: Voltage Controlled Current Source (VCCS) #### Description The circuit diagram above features a Voltage Controlled Current Source (VCCS). It is a common component in analog circuits, where the output current is linearly dependent on the input voltage. #### Components: 1. **Voltage Source (Vsig):** - Represents the input signal voltage. 2. **Resistors:** - **50Ω**, **12kΩ**, **5.2kΩ**, **50kΩ**, **5kΩ**, **20kΩ**: These resistors create various pathways for the current flow and determine the voltage at different points in the circuit. 3. **Voltage Controlled Current Source (0.04Vᵨᵢ):** - The controlled source's output current is 0.04 times a certain voltage (Vᵨᵢ) in the circuit. This component adds a level of feedback and control over the circuit's operation. #### Circuit Layout: - The **50Ω** and **12kΩ** resistors are in series with the voltage source (Vsig). - A **5.2kΩ** resistor is connected to the node between the **12kΩ** resistor and the VCCS, providing a path to ground. - On the right side of the VCCS, there are three resistors (**50kΩ**, **5kΩ**, and **20kΩ**) in parallel, also connected to ground. This setup influences the voltage (Vᵨᵢ) controlling the current source. #### Purpose: Such a configuration could be used for amplification or signal modulation purposes in analog electronics. The voltage across certain components determines the control of the current, affecting output voltage or current at other points in the circuit. Understanding the interactions between these components helps in designing circuits for specific electronics applications such as filters, amplifiers, and oscillators.
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