Abstract
Abstract : The results of a ceramic transformer development program are summarized. This program included an analytical study of device operation, measurement techniques, tapped transformers, oscillator circuits, and the effects of glass glazes on the ceramic material. Design, construction, and measurement procedures are described. A detailed evaluation of 4 representative transformers fabricated during Phase III of this program is included. These devices operate in the frequency range from 18 to 77 kc at output powers from 2 to 22 w. Efficiencies between 66 and 81% are realized. The ceramic transformer may be tapped readily, and will provide its own capacitance internally for rectification in the voltage doubler circuit. It operates well over a wide range of temperatures, and cannot be damaged by short circuit loading. Perhaps the most unusual property is the absence of magnetic fields and ferromagnetic material. Thus the transformer will not distort existing magnetic fields in its vicinity.
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