Detection of lightning, storms and the like

Details Detection of lightning, storms and the like Detection of lightning, storms and the like

1987-11-27

1989-04-18

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

324 72, 73170R, G01W 100

Patent

active

048231150

ABSTRACT:
Detection of lightning, storms, or the like via detecting means connected between an external antenna and ground, plus alerting means operatively connected to the detection means. An unpowered cascaded emitter-follower arrangement of at least a Darlington pair triggers a powered alerting circuit via an intervening gate opened when a fluctuation in ambient electric field causes the first transistor in such pair to conduct. A meter indicates such conduction even if the alerting means is not switched on, and alerting indicators in the alerting means may be tested in the absence of any detected field fluctuation.

REFERENCES:
patent: 2976522 (1961-03-01), Dowling
patent: 3828256 (1974-08-01), Liu
patent: 4006409 (1977-01-01), Adams

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