CONTACTLESS D C MOTOR Russian patent published in 1995 - IPC

FIELD: drives of instruments. SUBSTANCE: electric motor has commutator 1 connected to D. C. voltage source, rejection filters 2, 3, stator with two-phase winding (multiphase one in general case) which phases 4 and 5 are composed of two groups of analogous sections connected in series. First groups are shunted with capacitors 6, 7. Capacitors 8, 9 coupled in series with input windings of high-frequency transformers 10, 12 which output windings are linked to corresponding self-sustained generators 14, 15, demodulators 16, 17 and pulse distributor 18 are also included in mix of motor. EFFECT: enhanced reliability of operation thanks to prevention of false operations of keys of commutator. 1 dwg