The oscillatory circuit (figure) is excited by a sinusoidal voltage U = U0coswt, the frequency of which differs from the natural frequency w0, and the detuning Dw = w - w0 is greater than the width of the resonance curve Dw > d. Is it possible to pump up oscillations in the circuit by periodically closing and opening switch K? At what switching frequency W will the amplitude of oscillations in the circuit be maximum?
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