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Output performance of the single piezoelectric cantilever. (a) The open-circuit voltage versus frequency at different acceleration levels. (b) The open-circuit voltage output versus time at various accelerations from 0.1 g to 1.5 g. (c) The peak load voltage, and (d) the maximum instantaneous output power versus load resistance at accelerations of 0.1 g, 0.5 g, 1.0 g, and 1.5 g.
