Abstract :
The author of the paper "Triode Cathode-Followers for Impedance Matching to Transformers and Filters," which appeared in the TRANSACTIONS OF THE IRE, the March-April issue, 1955, has drawn attention to the following omissions in the text. In Figs. 7-17 (pages 31-36), the titles which identify the tube types were inadvertently deleted. It is suggested that readers who anticipate use of these curves pencil the appropriate identification onto the figures. They should read as follows: Fig. 7-1/2-12AC7 \´(B" (except for GAIN, which is for 1/2-12AX7 "B"), Fig. 8-1/2-12AT7 "A," Fig. 9-1/2-12.4T7 "B," Fig. 10-1/2-12AU7 "A," Fig. 11-1/2-12AX7 "B" (except for GAIN, which is for 1/2-12AU7 "B," Fig. 12-1/2-6BL7 "A," Fig. 13-1/2-6BL7 "B," Fig. 14-6AQ5 "A," Fig. 15 - 6AQ5 ("B," Fig. 16-12AU7 "A" (both halves in parallel), Fig. 17-12AU7 "B" (both halves in parallel). Note that because of the interchange of the GAIN data of Figs. 7 and 11, some of the data required in Example (1) of the text will be found in Fig. 7.
