Instrument for measurement of electrical resistanc

专利名称：Instrument for measurement of electrical

resistance

发明人：BERKELEY GEORGE申请号：US39312141申请日：19410512公开号：US2260234A公开日：19411021

摘要：0,077.Magnetic generator. Evershed Vignoles, Co., Ltd and Luo Erfu , G. B. 27days, No. 12247 July in 1940. [class 35] [also in a group XXXVI] resistance apparatusincludes the A. to resistance supply electric currentC.Generator mechanically and withgenerator is synchronize adjusted and measured by the means of a ratio table ohmmetertogether with through daily resistance. Generator includes a two poles of the earth,permanent-magnet rotor R, its pole-face and a stator winding W with oblique. By therotorshaft r of the means operation by a handle H of transmission device G, a pair of ofcommutator D is carried1, D2, the former and a swamping resistance S2 are connected inserieswith a coil C of the ohmmeter OM across a measuring resistance S, howevercommutator D2be connected between a terminal of S and with moveable ohmmeter coilD and swamping resistance S1 series connectionto the T3 of an end.

申请人：EVERSHED & VIGNOLES LIMITED

更多信息请下载全文后查看