Intermittent pulsed corona discharge lightning rod

Details Intermittent pulsed corona discharge lightning rod Intermittent pulsed corona discharge lightning rod

1985-12-30

1987-03-24

Askin, Laramie E.

Electricity: conductors and insulators

Lightning protection

Rods

361117, 361231, 361235, H02G 1300

Patent

active

046526943

ABSTRACT:
The invention relates to a corona discharge lightning rod comprising a tip which is isolated from the ground and having a base which is connected via discharge means to the ground, said lightning rod being suitable for ionizing the ambient atmosphere at the end of its tip. An electric circuit is provided for periodically reducing the potential of the tip to a value which is too low to maintain corona discharge, thereby producing periodic and intermittent corona discharge pulses. Preferably, the tip is electrically connected to a potential generator such that the potential (V.sub.0) applied to the tip is a variable potential in the form of recurrent wave trains, and such that the peak value of the first half cycle of the train having a polarity opposite to the polarity of the ambient atmosphere is greater than the threshold at which the corona effect takes place. This need only occur in the presence of the natural amplification (V.sub.1) as produced by the ambient electric field which exists during a thunderstorm.

REFERENCES:
patent: 4540844 (1985-09-01), Sautereau et al.

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