. The Bell System technical journal . C, 2L, ^ Cq Cq I 2 2 2L, 2L, 3 2—i—oxxy^ (F) « 4 J_^0 * 3 2L, crw-. r-^M^ (H)Fig. 14—Equivalent networks to represent transmission through divided plate crystal. 238 BELL SYSTEM TECHNICAL JOURNAL For purely electrical measurement, we can get rid of the two idealtransformers by taking half the impedance of Cm and Lm through eachtransformer as shown in Fig. 14E. Since we have left two opposingtransformers of equal ratio they can be eliminated and the network ofFig. 14F results. This is shown in balanced form. Figure 14G showsthe same network expressed in lat
. The Bell System technical journal . C, 2L, ^ Cq Cq I 2 2 2L, 2L, 3 2—i—oxxy^ (F) « 4 J_^0 * 3 2L, crw-. r-^M^ (H)Fig. 14—Equivalent networks to represent transmission through divided plate crystal. 238 BELL SYSTEM TECHNICAL JOURNAL For purely electrical measurement, we can get rid of the two idealtransformers by taking half the impedance of Cm and Lm through eachtransformer as shown in Fig. 14E. Since we have left two opposingtransformers of equal ratio they can be eliminated and the network ofFig. 14F results. This is shown in balanced form. Figure 14G showsthe same network expressed in lattice form which is easily done byusing the equivalences of Fig. 8. This represents a crystal of twicethe impedance of the fully plated crystal in each series arm of thelattice with the static capacitances Co in the other arm. If we connectterminal 1 to 3 and 4 to 2, or in other words we use a completelyplated crystal, the equivalent circuit reduces to that for a fully platedcrystal as shown in Fig. 14H. The networks of Fig. 14, F and G, represent the two plate crystalsfor transmission through the c
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