The load characteristics of dielectric barrier discharge type reactor depend on the controlling scheme of power supply.In order to study the load characteristics of DBD reactor powered by the PAM high voltage power supply;a equivalent circuit model considering the influence of the distributed circuit parameter on the load characteristics of DBD reactor is built

and a quantitative analysis of DBD load characteristics and a coaxial DBD experiment are carried out.The results show that: along with gradual increase of the applied voltage

the initial discharge time in one half discharge period gradually moves forward across the zero point of the applied voltage

yet discharge happens on the rising edge of the applied voltage all the time

and discharge terminates at the zero point of rising slope of the applied voltage all the time;equivalent average capacitance of load gradually increases

and both equivalent impedance and resonance frequency decrease;discharge current and discharge power gradually increase;discharge domain and discharge uniformity gradually increase.