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Simplified AC Circuit Analysis: Phasor Diagrams & Reactance Calculation

Explore AC circuit analysis by simplifying phasor diagrams, calculating reactances, and determining circuit impedances. Learn through example problems and understand the relationship between current and voltage in RLC circuits.

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Simplified AC Circuit Analysis: Phasor Diagrams & Reactance Calculation

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  1. Make it simpler???

  2. Up-comings • Today – Quiz • Today we try to finish the RL experiment • Monday – Dr. Dubey will introduce waves and then we will try to do the AC experiment (new handout) • Wednesday The )(*@^% Exam #3

  3. Process • Simplify the phasor diagram by taking wt=0 ; (t=0) • Calculate the reactances • Calculate the voltages • Add them all up as vectors. • Let’s see what this means

  4. the phasor

  5. capacitorphasordiagram

  6. The AC Circuit “i” The Same EVERYWHERE

  7. wt=0 Instantaneous current = i Maximum Current = I Z i(XL-XC) R R

  8. Example Problem A series RLC AC circuit has R = 400,L = 1.05 H, C = 4.00μF, ω = 377 s-1, and ΔVmax = 150 V.Determine the inductive reactance, the capacitive reactance, and the impedance of the circuit.Find the maximum current in the circuit.Find the phase angle between the current and voltage.Find both the maximum voltage across each element.

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