. The Bell System technical journal . network may be subslitutwl for it without change in the electricalcharacteristics of the circuit excluding those conditions within themesh or its variant. Fig. 19 illustrates equivalent T and it networksof inductance and capacity. The formulae relaling ihc iiidiictanceand capacity meshes of Fig. 19 are as follows: LaLb t LbLc r _ LaLc La = La+Lb+U Lb = La + Lh + U Lc = La+Lb+Lc -,- (67) Kennelly, A. K., The lu|iiivalence of TrianRJes and Tliree-Ioinlc|i. 41-J, S-|>t. 1(1, IXW. Also, .Xpiilication of Hyperbolic Functions toElitlrical KngineeriiiK (I

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. The Bell System technical journal . network may be subslitutwl for it without change in the electricalcharacteristics of the circuit excluding those conditions within themesh or its variant. Fig. 19 illustrates equivalent T and it networksof inductance and capacity. The formulae relaling ihc iiidiictanceand capacity meshes of Fig. 19 are as follows: LaLb t LbLc r _ LaLc La = La+Lb+U Lb = La + Lh + U Lc = La+Lb+Lc -,- (67) Kennelly, A. K., The lu|iiivalence of TrianRJes and Tliree-Ioinlc|i. 41-J, S-|>t. 1(1, IXW. Also, .Xpiilication of Hyperbolic Functions toElitlrical KngineeriiiK (IM 11 (.\p|>endix K). These meshes arc rJKorously couivalent, even when resistance is present if theratio d i» the same for all of the inductances and if the ratio d is the same for all ofthe ca|>acitiea. !■: IX I: ^ C,iCc ,. , C\Cr /. » CflCc =7T nnr>—»-^Tr> X AND Cn • ---^r. ()<)} Cc = +6c +-,-,. (70)

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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1