Aiming at high efficient

fast and stable utility requirements of piezoelectric energy acquisition technology

design a fast and efficient passive series-synchronous switching harvesting on inductor（ S-SSHI） based on the research of S-SSHI. The equivalent circuit of the piezoelectric transducer is determined

and the voltage stable response time and output power of the improved passive S-SSHI are simulated and analyzed. The results show that the circuit has a higher energy output

up to 51. 243 m W

in the case of low load（ < 20 kΩ） which is 4. 95 times the highest classical circuit; it also has stable voltage and quick response time characteristics. High power and fast stable features will provide a theoretical basis for energy-supply engineering design of wireless network nodes.