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Technique for Detection of High Frequency Audio Breakdown Disclosure Number: IPCOM000038061D
Original Publication Date: 1989-Oct-01
Included in the Prior Art Database: 2005-Jan-31

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Banikazemi, R Dornbos, TJ [+details]


In printed circuit cards and boards testing under high voltage conditions, surface and/or internal voids voltage breakdowns (ARC) may occur. Inspection and verification of the defect will be possible by using a high frequency device, such as, a 10 K - 100 M Hz audio receiver. Since high voltage breakdowns (ARC) generate high frequency radio signals, a radio receiver tuned to this range will amplify and convert the generated signal to an audible sound that can be heard through the radio speakers. This new technique can be used at the high voltage insulation resistance leakage test inspection and repair bench to verify the occurrence of corona and ARC, and repairs of these defects can be achieved at this point reliably. (Image Omitted)