Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets (1907)
Schneider, Norman H. (Norman Hugh), Hargrave, Jesse · New York, Spon & Chamberlain; [etc., etc.] · leaf 38
eters. One of the greatestdrawbacks to the use of galvanometers built onthe Thompson pattern is their sensitiveness toexternal influences. In large cities where trolleycars and buildings of iron frame constructionabound, this type of instrument needs constantadjustment. Allowances and checks have… … Fig. 9. has been so perfected that they are being almostuniversally adopted. The pioneer moving coil galvanometer is thatinvented by DArsonval. 16 ELECTRICAL INSTRUMENTS. The DArsonval Galvanometer. In Fig. 10 H isa horseshoe shaped magnet or series of magnetsbolted together and to the base B which…
Electric testing · Electric apparatus and appliances
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