FIGURE 1 shows a schematic diagram of a basic DC power supply. Assume all the diodes are ideal. (a) 240 Vrms (c) 5:1 D4

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Figure 1 Shows A Schematic Diagram Of A Basic Dc Power Supply Assume All The Diodes Are Ideal A 240 Vrms C 5 1 D4 1 (78.57 KiB) Viewed 67 times

FIGURE 1 shows a schematic diagram of a basic DC power supply. Assume all the diodes are ideal. (a) 240 Vrms (c) 5:1 D4 D3 Q FIGURE 1 D1 D2 OR OT OS OU What would be the reading of an AC voltmeter if you measured the voltage between points P and Q? If you measure the voltage using a DC voltmeter, what likely is the value? Give your reason. (b) Draw the waveform as it would appear when an oscilloscope is connected at points P and Q. Calculate the output voltage (VRL) and draw its waveform. (d) If D1 is open, what will happen to the circuit? Draw the output signal and calculate its voltage. (e) If a capacitor is connected between points R and S, what would happen to the output voltage in (c)? Explain your answer and draw the waveform. (f) If a Zener diode with V₂ = 9V is connected between point T and U, what would happen to the output voltage in (V)? Explain your answer and draw the waveform. RL [6 Marks] [2 marks] [6 Marks] [8 Marks] [4 Marks] [4 Marks]