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 134
nt, connect a resistance ofabout 100,000 ohms such as one of the glass slabs, TESTING WITH GALVANOMETER. Ill between the top left hand post and the + batterypost. Remove all plugs from the commutator betweenthe Bridge arms and plug in all coils. Connect inone cell of battery by means of the… … Fig. 73. blocks, galvanometer, galvanometer key G a, tothe main post and to the upper part of resistanceslab. The slab, galvanometer and battery will thus bein series when B a and G a are depressed. If any plugs have been left out in the rheostat, theresistance of the coils they control wTill also…
Electric testing · Electric apparatus and appliances
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