| 摘要 |
752,313. Automatic motor control systems. SOC. FRANCAISE D'EQUIPEMENTS POUR LA NAVIGATION AERIENNE S.F.E.N.A. Oct. 20, 1954 [Oct. 20, 1953], No. 30217/54. Drawings to Specification. Class 38 (4). The speed (armature current) of a reversible D.C. motor is regulated by supplying it through " forward " and " reverse " thyratrons controlled by a polarized relay having one winding for the control current and another winding, for the return circuits of the motor, acting in opposition to the control winding.
|
