1.

An input of Vsin t is applied to an ideal frequency doubler. Compute its output voltage?

A. V<sub>o</sub> = [(V<sub>x</sub> V<sub>y</sub>) /V<sub>ref</sub><sup>2</sup>] [1-cos2 t/2].
B. V<sub>o</sub> = [(V<sub>x</sub><sup>2</sup> V<sub>y</sub><sup>2</sup>) /V<sub>ref</sub>] [1-cos2 t/2].
C. V<sub>o</sub> = [(V<sub>x</sub> V<sub>y</sub>)<sup>2</sup> /V<sub>ref</sub>] [1-cos2 t/2].
D. V<sub>o</sub> = [(V<sub>x</sub> V<sub>y</sub>) /( V<sub>ref</sub>] [1-cos2 t/2].
Answer» E.


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