Exam Question

(a) By means of a schematic circuit diagram illustrate the peak rectifier, If the supply voltage is v(t) = Vm Sin wt, what is the voltage across the load resistor?

(b) A battery-charging circuit is shown below in Fig. The Forward resistance of the diode can be considered negligible and the reverse resistance infinite. The internal resistance of the battery is negligible. Calculate the necessary value of the variable resistance R so that the battery charging current is 1.0 A