The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 346
odulatortube. The amount of current in the antenna, which is supphedby the high frequency oscillation generator, will, therefore, dependon the resistance of the tube M. This resistance is varied inaccordance with the speech voltages impressed on its input in themanner explained with reference to… … Fig. 192. 179. The oscillator and modulator are both supplied by a batterythrough a low frequency choke coil which insm^es that they areboth supplied with constant direct current. The speech or audiofrequency voltage is impressed on the grid of the modulator bymeans of the transmitter through the…
Telegraph, Wireless
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
