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Lesson 1 Thevenin’s Theorem

Lesson 1 Thevenin’s Theorem. Resistance Thevenin’s Theorem for Resistive Circuits Inductance and Capacitance Thevenin’s Theorem for RLC Circuits. Institute of Electrical and Electronic Engineers. IRE Institute of Radio Engineers. AIEE American Institute of Electrical Engineers.

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Lesson 1 Thevenin’s Theorem

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  1. Lesson 1Thevenin’s Theorem Resistance Thevenin’s Theorem for Resistive Circuits Inductance and Capacitance Thevenin’s Theorem for RLC Circuits

  2. Institute of Electrical andElectronic Engineers IRE Institute of Radio Engineers AIEE American Institute of Electrical Engineers

  3. Domain ofElectronic Engineering The output of an electronic device provides information or intelligence Domain of Electrical Engineering The output of an electrical device (in the form of heat, mechanical motion, light, etc) is used to perform some function

  4. Resistance R I + V - V = IR Ohm’s Law + VB - VB - V = 0 Kirchhoff’s Voltage Law I = VB R Passive element is one that models a device that cannot generate electrical energy. A resistor dissipates energy in the form of heat.

  5. Application: Current Limiting Red LED 30 mA 20 mA 30 mA + 1.7 V - IR IR = 30 mA - 20 mA = 10 mA Kirchhoff’s Current Law R = 1.7 V = 170 ohms Ohm’s Law 10 mA

  6. Thevenin’s Theorem for Resistive Circuits resistors dc sources load + Voc - resistors dc sources resistors dc sources Isc RThev VThev = Voc RThev = Voc Isc voltage source vThev load

  7. Inductance and Capacitance tuned circuit i(t) v(t) = Avsin wt iL(t) iC(t)

  8. Resonance in aparallel tuned circuit Inductors and capacitors are passive elements that store energy

  9. Laplace Transform carbon toroid

  10. Thevenin’s Theorem for RLC Circuits R, L, and C elements and sources load R, L, and C elements and sources R, L, and C elements and sources + Voc(s) - Isc(s) ZThev VThev = Voc(s) ZThev = Voc(s) Isc(s) voltage source vThev load

  11. Example: Bandpass Filter Vin R Vout L C Find the Thevenin Equivalent Circuit.

  12. Take-Home Problem 1: Bandreject Filter R Vin Vout L C Find the Thevenin Equivalent Circuit.

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