The thermionic vacuum tube and its applications (1920)
Van der Bijl, Hendrik Johannes, 1887- · New York McGraw-Hill Book, Co · leaf 306
icuJts are C1C2L, for the Colpitis circuit, and L1L2C, forthe Hartley circuit. The effect of the inter-electrode capacitieswill be considered below. The conditions for oscillation for these circuits have beengiven by Hazeltine, Heising ^ and others. Taking, for example,the case of the Hartley… … Fig. 159. From this equation it follows that there is a certain relationbetween the voltages estabhshed in the plate and grid coils, whichmakes the tube oscillate most readily. Since the conditions foroscillation state that the right-hand side of equation (16) mustnot be greater than g^, it follows…
Telegraph, Wireless
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