d. Determine the frequency of oscillation if R, = 200 during the discharge phase. e. Sketch the waveform of v̟ for two full cycles. B1 f. Sketch the waveform of v for two full cycles. R2

The single-phase full wave rectifier is suppling a heavily resistive load. Assume an input of 230 V, 50HZ, α = x/3 calculate the average and rms values of an output voltage. Note: NO. of primary = 6 No. of secondary-3

Give an approximate sketch of the expected voltage waveform vi(t) for the circuit shown in Figure 7. The source produces a sinusoidal waveform with a maximum voltage of 12.6 V. Assume that the diode has a turn-on voltage of 0.7 V and that the reverse saturation current is approximately zero. 12.6 V AC 2 ΚΩ C Figure 7- Half-Wave Rectifier Now suppose a capacitor C is connected in parallel with the load as in Figure 8. Calculate a suitable value for C so that the RC time constant is about ~ 0.02 seconds. -2 ΚΩ + Give an approximate sketch of the expected v₁(t) waveform when C is added to the circuit. Qualitatively speaking, what is the role of a capacitor in this circuit? + VL VL VL volts VL volts