Cet instrument makes it possible to detect leaks and to excite cathode-ray tubes. Its flow rate is 10,000 to 50,000 V at a frequency of 0.5 megahertz. It is protected by a bakelite sheath and can be handled with one hand. The operation time is normally less than 1 minute; if continuous use is required, the operator should switch off the appliance every 10 minutes to allow the coil to cool. Power supply: 120 VAC, 50/60Hz.