Proximity detector between a metallic mass and an element to...

Details Proximity detector between a metallic mass and an element to... Proximity detector between a metallic mass and an element to...

G - Physics

01

V

340/124, 317/13,

G01V 3/08 (2006.01)

Patent

CA 1281097

ABSTRACT The present invention relates to a proximity detector between a metallic mass and an element subjected to an electric voltage, with an electric circuit feeding a safety device such as the coil controlling a circuit-breaker, the feeding switch of a motor controlling the displacement of the mass, an auditory or visual alarm or an emergency grounding, said circuit including an element which is normally non conductive but made conductive when there is a potential appearing on the metallic mass to be protected, or the antenna in which said electric circuit is fed by a DC autonomous power source, the conductibility of the element whose conductibility is modified by the variation of the electrostatic potential being controlled by the potential at an intermediate point between the metallic mass to be protected or the antenna and a pole of the DC source, with interposition between said intermediate point and said pole of a resistive or capacitive element.

554380

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