| 摘要 |
PROBLEM TO BE SOLVED: To stagger timings of a current made to flow through commonly arranged holding electrodes and to suppress an increase in a peek current by impressing mutually phase-shifted discharge holding pulses on two electrodes arranged with a discharge gap held in-between. SOLUTION: Discharge holding pulses IPY1 , IPY2 , of which rise times and all times are mutually staggered (phase-shifted) respectively, are impressed on second holding electrodes Y1 and Y2 , Y3 and Y4 arranged holding each discharge gap faced to first holding commonly arranged electrodes X1 ,2 , X3 ,4 . A current expressed as IY1 is made flow between the holding electrode Y1 - the holding current X1 ,2 while a current expressed as IY2 is made to flow between the holding electrode Y2 - the holding electrode X1 ,2 , and timings of displacement currents and those of discharge currents can be staggered. Therefore, the current IX1 ,2 summing IY1 and IY2 is made to flow through the holding electrode X1 ,2 , but the displacement current and the discharge current are phase- shifted, and a peek current is decreased. |
