The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 226
). It is evident thatE„=fj.E^. 68. Circuit for MeasuringAmplification Constant, PlateResistance and Mutual Conduc-tance. A set which makes possi-ble the quick measurement ofall three quantities, ix, Vp and Qmwas devised by H. W. Everitt.It consists of the combinationof three circuits shown in… … in the M = - .!1n (47) 204 THERMIONIC VACUUM TUBE The resistance ri has a constant value of 10 ohms and r2 is cali-brated to read tenths of ohms, so that the reading of r2 gives ndirectly. Now, to measure r^ the circuit is transformed into ciicuit IIby the simple operation of throwing over a…
Telegraph, Wireless
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