4.48 In the circuit shown in Fig. P4.48, I is a dc current and v s is a sinusoidal signal. Capacitors C 1 and C 2 are very large; their function is to couple the signal to and from the diode but block the dc current fromflowing into the signal source or the load (not shown). Use the diode small-signal model to show that the signal component of the output voltage is

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