Problem 4 Consider the controlled half-wave rectifier with a resistive load shown in Figure below. The source is v,(t) = Vm sin(wt), the SCR is ideal, and the firing angle satisfies Ο Σας π (a) Find the real (average) power delivered to the load, P. (b) Find the rms value of the source voltage, Vrms- (c) Find the rms value of the source current, Irms (d) Compute the apparent power, S = Vrms Irms (e) Show that the power factor is pf = Р PS = 12 sin(2a) ww V1 = Vm sin(cot) 2π + VSCR Gate Control 4π iG R Vs Vo α cof VSCR 8 cof

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