Fig. 4: Characterization of the SECE circuit operation.
From: A self-powered microsystem with efficient power management for continuous wireless sensing
a Measured waveforms of the SECE release for a single TENG cycle. b Zoomed-in view showing the energy transfer process. c, d Voltage and power when charging a 220 μF storage capacitor with and without SECE power management. e Charging a 100 μF storage capacitor from 0 V to operating voltage levels to demonstrate cold-start circuit operation. f Zoomed-in view of the transition from cold-start to SECE power management
