Method for enveloping electrical components with ceramic insulating material for components to withstand operational temperature of up to 300 degrees C, e.g. resistors, using mould forming intermediate space between element to be protected

摘要

Method uses ceramic paste and component enveloping is carried out in mould. Intermediate space between component elements, to be protected, and inner wall of mould is so chosen that resulting thickness of paste thickness gives required electric and mechanical protection. Preferably mould is of water absorbing material, e.g. gypsum, or porous plastics and may have through bushings. Electric contact pins are to be sealed during paste filling to prevent soiling of pins.