Abstract
A new electrostatic meter is described for measuring by a null method resistance, capacity, power loss and power factor over a considerable range of values at mains frequency. The action of the device depends on the vibrations which are set up in a thin aluminium reed initially at rest under the influence of two opposite alternating electrostatic forces. It is arranged that the quantity we wish to measure upsets the equilibrium in these forces, but balance may be restored to 10-4 by the adjustment of a potentiometer and/or a resistance. The theory is discussed and typical examples of the various applications are given.
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