. The Bell System technical journal . Arm Type Product Arm Type RatioReal RatioImaginary ProductReal ProductImaginary RcdXcdGcdBcd RadXadGadBad XadRadBadGad GabBabRab Xab BabGabXabRab 1 These values may be derived by using admittances in place of impedances andvice versa throughout. Actual Bridge Forms The fixed arms may be made up of simple resistances or reactancesor of complex impedances provided they meet their phase require-ments. Since the choice of complex impedances has no practicaladvantages over simple reactances or resistances, the choice of fixedimpedances should obviously be made

---

. The Bell System technical journal . Arm Type Product Arm Type RatioReal RatioImaginary ProductReal ProductImaginary RcdXcdGcdBcd RadXadGadBad XadRadBadGad GabBabRab Xab BabGabXabRab 1 These values may be derived by using admittances in place of impedances andvice versa throughout. Actual Bridge Forms The fixed arms may be made up of simple resistances or reactancesor of complex impedances provided they meet their phase require-ments. Since the choice of complex impedances has no practicaladvantages over simple reactances or resistances, the choice of fixedimpedances should obviously be made on the basis of the simplestpractical type. So they will be limited for the present to simpleresistance, capacitance, and self inductance. 460 BELL SYSTEM TECHNICAL JOURNAL Fig. 2 gives all of the combinations of fixed arms which meet thephase angle requirements already stated, when limited to simpleresistance, inductance, or capacitance. For all forms, the magnitudeof one arm is given in terms of the other and of a constant K, such.

---

Size: 2499px × 1000px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1