The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 392
hat this arrangement acts practically as an elec-trostatic voltmeter, and because of the amplification produced bythe tube, the arrangement can be used to measure very small alter-nating voltages. Sometimes, however, the plate current doesnot give a sharp intercept on the voltage axis, but tails… … Fig. 220. the increase in current during the positive haK wave is greaterthan the decrease during the negative half wave. When thecharacteristic tails off and accuracy is desired, it may be necessaryto apply a correction. Fig. 221 shows the relation between thetrue voltage and the voltage measured…
Telegraph, Wireless
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