Abstract

Apparatus consisting of two precision potential dividers, a student's galvanometer, a cheap standard cell, a table radio receiver, and a pair of intermediate frequency transformers is shown to be sufficiently flexible and sufficiently precise to allow it to be used for a large part of the electrical calibrations needed in a laboratory. Accuracies of about 14 of 1% at zero frequency and of about 1% at 455 kilocycles per second can be obtained. The total cost of the equipment is $125 or less.

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