Demagnetizing device especially for naval vessels

Details Demagnetizing device especially for naval vessels Demagnetizing device especially for naval vessels

1986-09-19

1988-03-29

Hix, L. T.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

H01H 4700

Patent

active

047348160

ABSTRACT:
The invention concerns demagnetization devices used in particular for demagnetizing vessels or submarines in fixed stations, wherein one embodiment comprises: three sets of conductors for demagnetizing a vessel according to three directions; a direct current generator; an array of capacitors, a bridge switching device, an inductance coil; a switch allowing to select one of the three assemblies of conductors; a servo device for controlling the charge voltage of the array of capacitors; magnetometers; and a screen and keyboard allowing especially to supply a microprocessor with a reference value fixing the value of the desired residual magnetization; the demagnetization consisting of sending into each set of conductors a sequence of discharges, of smaller and smaller intensity and servo-controlled to the value of the remaining magnetization, in order to cause the magnetization to converge towards the desired value.

REFERENCES:
patent: 2730063 (1956-01-01), Richard
patent: 2933059 (1960-04-01), Cohen
patent: 3110282 (1963-11-01), Foerster
patent: 3215904 (1965-11-01), Burt
patent: 4539619 (1985-09-01), Hill

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