Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 66
R —-— (68) or b X bX = —R (69) a In making a measurement with this form of bridge therelation between the ratio arms (a) and (b) remains con-stant after they are adjusted to a certain value, and a balanceis obtained by changing the value of the resistance in therheostat (R). If (a) and (b) are made… … Fig. 19 (b) greater than (a); and to measure a resistance smallerthan (R), make (b) less than (a). In the first case the resist-ance (R) is multiplied by a certain number, which is thequotient of (bn-a), and will always be greater than imityto obtain the value of (X); and in the second case (R)…
Electrical engineering
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