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Figure 4. Research on Power Management Circuit. (A) Power management circuit, (B) Current and (C) Charge of the PMC under different capacitance values of C₂, (D) Discharge time of the PMC with C₂ capacitance values of 47 μF and 10,000 μF, (E) Current and (F) Charge under different inductance values of L, (G) Number of pulse currents and (H) Charge under different capacitance values of C₁, (I) current of the PMC at different loads when C₂ = 100 μF, (J) Current comparison of the PMC with C₂ capacitance values of 10 μF and 100 μF under a load of 10 kΩ, (K) Charge of the PMC under different loads, (L) Comparison of charging time for a 100 μF capacitor with and without the PMC, (M) Comparison of charging energy with and without the PMC, (N) Comparison of the output of the fabric-based TENG with other fabric-based TENGs^{[10,42,44-48]}. TENG: Triboelectric nanogenerator; KF DC-TENG: knitted fabric-based direct current TENG; PMC: power management circuit.