Electrical conductor locating device

Details Electrical conductor locating device Electrical conductor locating device

2006-12-05

2006-12-05

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Conductor identification or location

C324S067000, C324S260000, C324S263000

Reexamination Certificate

active

07145319

ABSTRACT:
An electrical conductor locating device comprises a pulse generator and a detector. The pulse generator includes a transformer with outputs for connecting to two positions along the electrical conductor to define a closed loop. The current in the closed loop produces an electromagnetic field around the conductor. The detector is comprised of a magnetic field sensor coupled to the input of an amplifier. The output of the amplifier is connected to an indicator, such as a LED. When the sensor is moved perpendicularly closer to the conductor, it senses an increasing magnetic or electromagnetic field strength so the amplifier drives the indicator at greater intensity. When the sensor is directly aligned with the conductor, the sensor is inside the equipotential point of the magnetic or electromagnetic field where the field strength approaches zero, so the amplifier drives the indicator at close to zero intensity and thus pinpoints the conductor.

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patent: 5920194 (1999-07-01), Lewis et al.
patent: 6541977 (2003-04-01), Sneed et al.
patent: 6586938 (2003-07-01), Paltoglou
patent: 6614211 (2003-09-01), Douglas
patent: 2004/0145486 (2004-07-01), Campbell et al.

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