Corona discharge detection apparatus which eliminates periodic n

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage

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324 72, 328135, 328165, G01R 3114, H04B 1500

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active

041919211

ABSTRACT:
A corona discharge detection apparatus particularly suited for use in detecting corona signals mixed with noise which is in synchronism with a cycle of a power supply such as corona discharge which occurs in a flyback transformer of a television receiver. The noise and the corona signals are converted to a digital signal and the digital signals in two cycles are subtracted one from the other and the resulting digital signal is converted to an analog signal for observation. In this manner, a corona signal which has not been detected by a phase technique can now be detected.

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