Oyo Corporation

Abderrahim Abdelhadi

Serge Gasnier

An emitter for a system of electromagnetic tomographic measurements, as well as a process and a generator (5) adapted to produce a variable frequency current supplying a solenoid (1), constituted of turns wound about a magnetic core (3). The solenoid (1) is constituted by several windings (4a, 4b, 4c) disposed side by side with each other on the core (3), and the emitter comprises switching means (6) adapted to connect in series or in parallel and/or to disconnect the different windings (4a, 4b, 4c) with and from each other, constituting the solenoid (1), so as to control the number of active turns of the solenoid (1).

Process for the production of a supply current of a solenoid for a

aN emitter for a system of electromagnetic tomographic measurement, as well as a process and a generator (5) adapted to produce a variable frequency current supplying a solenoid (1), constituted of turns wound about a magnetic core (3). The solenoid (1) is constituted by several windings (4a, 4b, 4c) disposed side by side with each other on the core (3), and the emitter comprises switching means (6) adapted to connect in series or in parallel and/or to disconnect the different windings (4a, 4b, 4c) with and from each other, constituting the solenoid (1), so as to control the number of active turns of the solenoid (1).

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Olivet, France

Abderrahim Abdelhadi