Design and performance of magnets in the automatic telephone (1912)
Hays, Don Llewelyn, Thvedt, Christian Bernhard · leaf 32
gether with the weights upon the pan)accurately upon the scales, the lift of the magnets under variousconditions was readily determined* Figure k shows three views of a standard vertical magnet arma-ture. Suoh armatures are made of No.9 (Brown and Sharpe)Norway ironannealed, having a thickness of… … Figure 4. (12) First among the testa made was that to determine the liftingpower of the magnets for various values of ourrent. The resultsof this test are shown in tabulated form on page and graphicallyin the form of a ourve on page 16 (See Graph No.l) Under usual conditions of operation of…
Electromagnets · Telephone, Automatic · Theses
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