The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 355
l differ from zerowhenever the electron affinity of the filament is different from thatof the grid, the contact potential difference between the two beingequal to the difference between their electron affinities expressedin volts (see Chapter III). 103. Detection with Blocking Condenser in Grid… … Fig. 198. in Fig. 198. The difference between these two circuits is thatFig. 198 contains in the grid circuit a condenser Cs shunted by ahigh resistance leak Rs. The mechanism of detection withsuch a circuit is different from that in which the blocking con-denser is omitted. In the latter case the…
Telegraph, Wireless
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