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 80
rotating of E therefore moves G and thesilk fibre rotates H and the pointer, thus magni-fying the movement of G. Any temperature variations will affect A Bequally, it is therefore self-compensating. VOLTMETERS AND AMMETERS. 57 The tension of F being slight, wire A B is notunder a heavy strain, it… … Fig. 43. a switchboard instrument in Fig. 43, many othertypes being manufactured. For direct current work only an electro-magneticsystem is used. The ammeters of this type havea uniform drop of .05 volt. Shunts are thus inter-changeable. 58 ELECTRICAL INSTRUMENTS. Ammeter Shunts. The ammeter shunts…
Electric testing · Electric apparatus and appliances
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