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chapter33_2

# chapter33_2 - Review on R L C and RLC in AC circuits c An...

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Unformatted text preview: Review on R , L , C and RLC in AC circuits c An AC power source is a sinusoidal voltage source which is described as ( ) max v V sin t Δ Δ ω = v Δ max V Δ c We study the current i as a function of time when a resistor, inductor, capacitor or the serial connection of the three, to the AC voltage source. ( ) i t When resistance is involved, To be discussed today Kirchhoff’s Loop RLC No power is consumed. leads, or Kirchhoff’s Loop C No power is consumed. leads, or Kirchhoff’s Loop L In phase or Ohm’s Law R Power Phasor diag. Phase w/ Current i Laws to apply ( ) max v V sin t Δ Δ ω = v Δ ( ) max i I sin t ω = φ = av rms rms p V I Δ = ⋅ 2 max rms V V Δ Δ = 2 max rms I I = max max V I R Δ = ( ) 2 max i I sin t π ω =- max max L L V I ,X L X Δ ω = = 2 π φ = v Δ ( ) 2 max i I sin t π ω = + 1 max max C C V I ,X X C Δ ω = = i 2 π φ = - Assuming AC voltage source: ( ) max i I sin t ω φ =- ( ) 2 2 L C Z R X X = +- L C X X tan R φ- = max max V I Z Δ = Power discussion of...
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chapter33_2 - Review on R L C and RLC in AC circuits c An...

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