The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 225
en into consideration the method becomes tedious and has no advantage over obtaining — from rp separate determinations of ix and /> by the method explained withreference to Fig. 100. A simple d-c. method of measuring the mutual conductance,due to E. V. Appleton ^ is of interest. The circuit… … Fig. 103. 7i is the current in Ru This causes a change in the plate currentequal to IiRi T—•oe.n Now it will be seen that I and /i flow through the galvanometer inopposite directions. Hence if R\ be adjusted until the galvano-meter reading shows no change, then or Ii^hRi-r— beg beg Ri (45) The…
Telegraph, Wireless
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