(c) A practical voltage regulator involving a Zener diode reference and series pass transistor is shown in Fig. 15. The circuit is connected to an unregulated voltage source VIN i IN R 380 + VIN +1 100 100 RL VOUT λουτ VZ iz Figure 15: Single-transistor voltage regulator. If a change in the load causes the output voltage Vour to decrease, explain how the circuit responds to restore the output voltage. Note: No mathematical analysis is required, and a simple chain of reasoning is sufficient. (ii) Sketch the small-signal equivalent circuit of the regulator and simplify your diagram as much as possible. (iii) The unregulated voltage source VIN is now replaced with a constant voltage VIN = 9V. If the operating point of the Zener diode is (Iz, Vz) = (5 mA, 6.7V), and the transistor has VBE = 0.7V, calculate the efficiency of the regulator.

5) In the single-phase full wave bridge rectifier circuit with a load of pure resistance, the input supply voltage is given as 220V , 60hz, the load resistance value is 15 Q. Compute the following a)average and rms value of output voltage b) average and rms value of output current P P: O N

I just want a solution without explanation

Determine the peak output voltage for the bridge rectifier in this figure. Assuming the practical model, what PIV rating is required for the diode? The transformer is specified to have a 12 Vrms secondary voltage for the standard 110 V across the primary. * D3 Di 110 V Vpsec) D2 RL D 10 k . Vp(out)= 14.6 V, PIV= 14.3 V O vp(out)= 16.5 V, PIV= 13.6 V Vp(out)= 13.6 V, PIV= 13.3 V O vp(out)= 15.6 V, PIV= 16.3 V ell elll