Multiple coil eddy current probe equipped with a coil balancing

Details Multiple coil eddy current probe equipped with a coil balancing Multiple coil eddy current probe equipped with a coil balancing

1984-02-06

1987-03-17

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324233, 324238, G01N 2787, G01N 2790, G01R 3312

Patent

active

046510931

ABSTRACT:
The invention relates to a multiple coil eddy current probe equipped with a coil balancing device. This probe comprises several coils forming an eddy current probe supplying in each case one signal. Each coil is regulated to overvoltage by a regulating unit, which acts on the frequency of the high frequency oscillator supplying each coil. Application is to the automatic positioning of a welding torch and to the inspection of the weld.

REFERENCES:
patent: 3611121 (1971-10-01), Vild et al.
patent: 3823368 (1974-07-01), Mansson et al.
patent: 4424486 (1984-01-01), Denton et al.
patent: 4467281 (1984-08-01), Davis et al.

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