Fig. 2: Characterization of TENG for low-frequency mechanical energy harvesting.
From: A self-powered microsystem with efficient power management for continuous wireless sensing
a Schematic illustration of the TENG. b TENG operation at different frequencies. c Comparison of direct charging of a 220 μF capacitor by the TENG at different frequencies. d Stability of the TENG operation over 2500 cycles
