NON-CONTACT DIRECT CURRENT ELECTRIC MOTOR Russian patent published in 1997 - IPC

FIELD: devices for automatic control and regulation. SUBSTANCE: device has two-phase circuit which sections are connected as bridge circuit, two detectors of electric motor rotor position, electronic switching circuit which has four power transistors. Two detectors of electric motor rotor position are shifted by 90 electric degrees. In addition device has two additional transistors and two-position switch with two groups of contacts which connect detectors of rotor position and additional transistors to electronic switching circuit. Said additional transistors operate in opposite phase to detectors. EFFECT: increased functional capabilities. 1 dwg