The limit sensitivity of a transformer variable electric field sensor in the sea

An analytical expression for the limit sensitivity of a transformer sensor is obtained. It is shown that at frequencies higher than a certain limit the sensitivity is determined solely by the geometrical dimensions of the sensor and is independent of the number of turns in its coil and the magnetic permeability of the core. __________ Translated from Izmeritel’naya Tekhnika, No. 7, pp. 51–53, July, 2008.