The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 198
the angle 0 = tan~^ — of the external impedance. Let the plate cuirent be represented THE THERMIONIC AMPLIFIER 175 by ip in the direction OQP. The voltage drop ipVp, in the tube,due to its plate resistance, is given by OQ. The drop ipZo in theexternal impedance Zq is given by Qa. Thus, in the case… … Ond Vol-f-S Fig. 88. which is parallel to Qa2. The phase difference between ep andHBg or eg is therefore equal to the angle a20c2 which is 157.5°,This is for the case in which the external impedance Zq is numeri-cally equal to the plate resistance Vp (0Q = Qa2), and has an angleof 45°. Referring…
Telegraph, Wireless
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