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Machine translation
1. (WO1981001205) STEP BY STEP MICROMOTOR FOR A CLOCKWORK
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/001205    International Application No.:    PCT/CH1980/000109
Publication Date: 30.04.1981 International Filing Date: 22.09.1980
IPC:
G04C 3/14 (2006.01)
Applicants:
Inventors:
Priority Data:
9349/79 18.10.1979 CH
Title (EN) STEP BY STEP MICROMOTOR FOR A CLOCKWORK
(FR) MICROMOTEUR PAS A PAS POUR MOUVEMENT D"HORLOGERIE
Abstract: front page image
(EN)The control circuit of a step by step micromotor for example diphased, wherein a magnetized rotor cooperates with two stator elements coupled each to a respective excitation electric coil (A, B), comprises only 6 power transistors (T1-T6). The coils (A and B) have each a common connection point hence making a set of three connexion terminals between the coils and the control circuit. The circuit allows the supply to each of the coils of current pulses of opposite polarity and to short circuit the coils in the intervals between the pulses. The simplification resulting from the elimination of two power transistors for the second coil leads to an important reduction of the room taken by the control circuit and the connection strips.
(FR)Le circuit de commande d"un micromoteur pas a pas, diphase par exemple, dans lequel un rotor aimante coopere avec deux elements de stator couples chacun a une bobine electrique d"excitation respective (A, B), comporte seulement six transistors de puissance T1 a T6. Les bobines (A et B) presentent un point de connexion commun, l"ensemble des bornes de connexion entre les bobines et le circuit de commande etant ainsi de trois. Le circuit permet d"alimenter chacune des bobines en impulsions de courant de signes contraires et de court-circuiter les bobines dans les intervalles entre les impulsions. La simplification resultant de l"elimination de deux transistors de puissance pour la deuxieme bobine conduit a une reduction importante de la place occupee par le circuit de commande et les pattes de connexion.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)