H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 47/32 (2006.01) H01F 7/18 (2006.01)
Patent
CA 2252622
Device for controlling an inductive charge, particularly, of an electromagnetic coil, comprising a chopper switch in series with the coil and governed by a pulse width modulator, and an opening switch which is also mounted in series with the coil. A transfomer converter (20) has two secondary windings, of which one is connected to the modulator (11) and the other one is connected to the grid of the opening transistor (T2) via a switch (25) biased by the opening signal.
Dispositif de commande d'une charge inductive, notamment d'une bobine d'électroaimant, comprenant un interrupteur hacheur, en série avec la bobine et piloté par un modulateur de largeur d'impulsions, et un interrupteur d'ouverture également en série avec la bobine. Un convertisseur à transformateur (20) présente deux enroulements secondaires dont l'un est relié au modulateur (11) et dont l'autre est relié à la grille du transistor d'ouverture (T2) via un interrupteur (25) sollicité par le signal d'ouverture.
Robic
Schneider Electric Sa
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