To {TAIL ~ this end}, a further goal of the invention is {HEAD ~ an electrical circuit} capable of storing electrical energy and capable of stepping up and discharging the stored energy in two frequencies in a series of pulsating, discharges 
To { TAIL ~ this end } , a further goal of the invention is { HEAD ~ an electrical circuit } capable of storing electrical energy and capable of stepping up and discharging the stored energy in two frequencies in a series of pulsating , discharges
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