Methods of Measuring Electrical Resistance
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In our eReader you can find the full English version of the book. Read Methods of Measuring Electrical Resistance Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Methods of Measuring Electrical Resistance
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Here a and /3 are thrown, the one in series with A and the FIG. 609b.
other in series with B. Thus the equation of the bridge in this case becomes, (A + a) b - (B + 0) a = 0. (2) In the actual employment of the Kelvin double bridge the resist- ART. 610] THE MEASUREMENT OF LOW RESISTANCE 117 ance d can never be made zero, -tho it should be made as small as possible.
Referring to Fig. 609a, A and B are two low resistances (pro- vided with potential points at 1, 2, and 1', 2') which are to be comp...ared, the resistance of both A and B being that included between potential points. The resistance d, called the " yoke, " connects A and B. Besides being made as low as possible it is arranged to be easily removed as, for example, by withdrawing a copper link from two mercury cups. The other four resistances a, b and a, /3 are relatively high resistances and are called the ratio coils. Because there are two pairs of ratio coils the net-work is called a " double bridge. " 610. Theory of the Kelvin Double Bridge.
What to read after Methods of Measuring Electrical Resistance?
You can find similar books in the "Read Also" column, or choose other free books by Edwin F Edwin Fitch Northrup to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Here a and /3 are thrown, the one in series with A and the FIG. 609b.
other in series with B. Thus the equation of the bridge in this case becomes, (A + a) b - (B + 0) a = 0. (2) In the actual employment of the Kelvin double bridge the resist- ART. 610] THE MEASUREMENT OF LOW RESISTANCE 117 ance d can never be made zero, -tho it should be made as small as possible.
Referring to Fig. 609a, A and B are two low resistances (pro- vided with potential points at 1, 2, and 1', 2') which are to be comp...ared, the resistance of both A and B being that included between potential points. The resistance d, called the " yoke, " connects A and B. Besides being made as low as possible it is arranged to be easily removed as, for example, by withdrawing a copper link from two mercury cups. The other four resistances a, b and a, /3 are relatively high resistances and are called the ratio coils. Because there are two pairs of ratio coils the net-work is called a " double bridge. " 610. Theory of the Kelvin Double Bridge.
What to read after Methods of Measuring Electrical Resistance?
You can find similar books in the "Read Also" column, or choose other free books by Edwin F Edwin Fitch Northrup to read onlineMoreLess
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