Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 660
ll be operated when the key, K, is closed over whateverresistance is connected between the circuit of the two plugs. When, however, the key, K, is thrown into its alternate posi-tion, whatever resistance is between the two plugs represents theunknown resistance on the Wheatstone bridge arrangement,… … WHEAT3TONE BRIDGE FIG. 467.—TESTING PLUG CIRCUIT. It is evident that if it is wished to measure the resistance betweenthe ring side of the outside line and ground, one of the bridge plugswill be inserted in the jack, c, while the other will be inserted in theground jack, g. The more modern wire…
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