Electric Characters on Three Electrosurgical Units

Abstract

1) Of the three units studied, one unit had no selection switch. Throughout these units, the output wave showed a sin curve. But in one unit, the wave showed a sin curve at cutting and a modulated sin curve at coagulation, and another showed a sin curve in spite of a selection switch.
2) Following the interposition of load impedance, the output wave of all units showed no change in form, but an increase or decrease in voltage.
3) All three units showed a similar electric frequency.