H - Electricity – 05 – F
Patent
H - Electricity
05
F
H05F 3/00 (2006.01) A01K 29/00 (2006.01) H02H 3/14 (2006.01)
Patent
CA 2060673
A method and device neutralize alternating stray current flowing through a ground return circuit in the proximity of an animal susceptible to be affected by this current. The alternating stray current flowing through the ground return circuit is sensed and a signal representative of that stray current is produced. In response to this current representative signal, an alternating compensatory current is generated and injected in the ground return circuit. The alternating compensatory current has an amplitude equal to the amplitude of the sensed stray current and is out of phase with respect to that stray current by an angle of 180°. Therefore, the alternating compensatory current and the alternating stray current add in the ground return circuit and substantially cancel each other whereby the stray current can no longer affect the animal. A plurality of different configurations for the connection of the stray current neutralizing device to the ground return circuit are described, each configuration being adapted to a specific application.
Cette invention concerne une méthode et un dispositif conçus pour neutraliser les courants alternatifs vagabonds circulant dans un circuit de retour à la terre et susceptibles d'affecter un animal se trouvant à proximité. Le dispositif détecte les courants alternatifs vagabonds circulant dans le circuit de retour à la terre et produit un signal proportionnel à l'intensité de ces courants qui sert à commander la génération d'un courant alternatif de compensation à être injecté dans le circuit de retour à la terre. Celui-ci est de même amplitude que le courant vagabond détecté mais déphasé de 180 degrés par rapport à celui-ci. Par conséquent, les deux courants s'annulent quasi complètement et l'animal ne risque pas d'être incommodé. L'invention prévoit plusieurs configurations différentes de connexion au circuit de retour à la terre, chaque configuration étant adaptée à une application particulière.
Corporation Nuvolt Inc.
Fasken Martineau Dumoulin Llp
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