Eltz, George Jacob, b. 1893 · New York, N.Y. : Radio Directory and Pub. Co. · leaf 37
vwwwv Figure 14 Combination resistance and resonance type filter. 16 and 17. 12000 ohm resistance. 18. Fixed condenser—.005 mf. 19. Variable condenser—.005 mf. maximum. 20. Choke coil about .1 to .25 Henries. … Figure 15 Constructional details of coil No. 20 in Fig. 14. Thecore consists of No. 22 iron wire tightly forced in thehole provided. The Armstrong Super-Regenerative Circuit 37 In Fig. 2 the scheme of connections is considerably different anda filter is necessary. Here the plate current of the…
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