31. The absence of oxygen in the atmosphere within significantly reduces the damage of the windings insulation by eventual corona discharges . 32. Streamers are transient ( exist only for a short time ) and filamentary, which makes them different from corona discharges . 33. Corona discharges can often be suppressed by improved insulation, corona rings, and making high voltage electrodes in smooth rounded shapes.34. Overhead open-air conductors may sizzle a bit from corona discharge . Edison 15 : 51, 1 February 2007 ( UTC) 35. It works on the principle of corona discharge , where two plates are placed close together and high voltage is applied. 36. If the high-tension lines become too close, either to each other or ground, a corona discharge may form between the conductors. 37. The voltage produced by an open-air Van de Graaff machine is limited by arcing and corona discharge to about 5 megavolts. 38. The new RF power amplifiers were said to be made for hard vacuum, but failed rapidly due to internal corona discharges . 39. With monopolar transmission the choice of polarity of the energized conductor leads to a degree of control over the corona discharge . 40. These safety devices detect the buildup of gas inside the transformer due to corona discharge , overheating, or an internal electric arc.
