Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 259
sc fastened to a shaft, rotatesin jewel bearings. Projecting over the disc on one Instruments for Testing 253 side and so arranged that the disc rotates between itspole pieces is a laminated magnet C, on which is wounda coil of wire. Another coil C is placed so that its i| i Figure 156field cuts… … Figure 157 coil C, coil C having no iron core, a torque is set upwhich tends to rotate the disc, the amount of deflec-tion being indicated by the pointer attached to theshaft. 254 Operating and Testing Figure 157 shows in a simplified form an instrumentwhich can be used for the measurement of…
Electrical engineering · Electric testing
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