lf the contacts part too quickly before the current zero
for the dielectric strength of the gap to overcome the
recovery voltage, reignitions could occur. A typical
oscillogram of the voltage and the current waveform
with multiple reignitions after interrupting the inverter
circuit is shown in Fig. 8. The top trace in Fig. 8 shows
the high-frequency current through the contacts when
reignitions occur, and the bottom is the voltage across
the contacts. The recovery voltage drops abruptly and
high frequency current flows through the contacts but
interrupted in 0. 5