*4.56 Design a diode voltage regulator to supply 1.5 V to a 1.5-k load. Use two diodes specified to have a 0.7-V drop at a current of 1 mA. The diodes are to be connected to a+5-V supply through a resistorR.Specify the value forR.What is the diode current with the load connected? What is the increase resulting in the output voltage when the load is disconnected? What change results if the load resistance is reduced to 1 k ? To 750 ? To 500 ? (Hint:Use the small-signal diodemodel to calculate all changes in output voltage.)

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