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What is the circle symbol name and what does it mean?

What is the circle symbol name and what does it mean?

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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What is the circle symbol name and what does it mean? Topic is electrical engineering
# First Order RC Circuit **Figure 3 - First Order RC Circuit:** This figure illustrates two parts: (a) **Original RC Circuit**: - Consists of resistors \( R_1 = 2 \, \text{k}\Omega \) and \( R_2 = 1 \, \text{k}\Omega \), a voltage source \( E = 5 \) volts, and a capacitor \( C = 10 \, \text{nF} \). - The switch is closed at \( t = 0 \). (b) **Thevenin Equivalent of Original RC Circuit**: - Includes the Thevenin resistance \( R_{\text{TH}} \) and Thevenin voltage \( V_{\text{TH}} \) across terminals a-b with the capacitor \( C \). **Notes and Calculations**: - **Given Parameters:** - \( R_1 = 2 \, \text{k}\Omega \) - \( R_2 = 1 \, \text{k}\Omega \) - \( E = 5 \, \text{V} \) - \( C = 10 \, \text{nF} \) - **Calculations:** - The Thevenin voltage \( V_{\text{TH}} = 5 \, \text{V} \). - **Problem:** - Determine the time constant \( \tau \) when the switch is closed at \( t = 0 \). - Given \( v_C(0^-) = 0 \), implying the capacitor was fully discharged before \( t = 0 \). - **Equations and Expressions:** - \( v_C(t) \) and \( i_C(t) \) for \( t > 0 \). The text notes additional handwritten annotations which may include specific formulas or extra details for further calculations.
Transcribed Image Text:# First Order RC Circuit **Figure 3 - First Order RC Circuit:** This figure illustrates two parts: (a) **Original RC Circuit**: - Consists of resistors \( R_1 = 2 \, \text{k}\Omega \) and \( R_2 = 1 \, \text{k}\Omega \), a voltage source \( E = 5 \) volts, and a capacitor \( C = 10 \, \text{nF} \). - The switch is closed at \( t = 0 \). (b) **Thevenin Equivalent of Original RC Circuit**: - Includes the Thevenin resistance \( R_{\text{TH}} \) and Thevenin voltage \( V_{\text{TH}} \) across terminals a-b with the capacitor \( C \). **Notes and Calculations**: - **Given Parameters:** - \( R_1 = 2 \, \text{k}\Omega \) - \( R_2 = 1 \, \text{k}\Omega \) - \( E = 5 \, \text{V} \) - \( C = 10 \, \text{nF} \) - **Calculations:** - The Thevenin voltage \( V_{\text{TH}} = 5 \, \text{V} \). - **Problem:** - Determine the time constant \( \tau \) when the switch is closed at \( t = 0 \). - Given \( v_C(0^-) = 0 \), implying the capacitor was fully discharged before \( t = 0 \). - **Equations and Expressions:** - \( v_C(t) \) and \( i_C(t) \) for \( t > 0 \). The text notes additional handwritten annotations which may include specific formulas or extra details for further calculations.
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