Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets (1907)
Schneider, Norman H. (Norman Hugh), Hargrave, Jesse · New York, Spon & Chamberlain; [etc., etc.] · leaf 123
The Evershed Testing Set. This simple testingoutfit, Fig. 69, consists of an ohmmeter and a hand 100 ELECTRICAL INSTRUMENTS. generator. To test an insulation or other resist-ance, all that is required is to connect the resist-ance to the binding posts, turn the generatorhandle and read the… … Fig. 70. The connections of the Evershed set are givenin Fig. 70. Current from the generator D flows to the ohm-meter —h where it divides. Part travels throughthe pressure coil P and resistance R and tends to PORTABLE TESTING SETS. 101 turn the magnetic needle towards the infinity markon the scale.…
Electric testing · Electric apparatus and appliances
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