FIELD: electrical and radio engineering; wire-wound resistors for motor cars. SUBSTANCE: wire-wound resistor unit is, essentially, monolithic metal-in-ceramic junction produced by joint high-temperature burning without ceramic crazing. Resistor metal with current ducts welded thereto serves as base carrying two ceramic insulation layers. First of them is composite material based on ceramic and/or glass, and/or glass-frit, and/or inorganic adhesive cement. Second layer is made in the form of ceramic casing dictating size and outer configuration of device. As an alternative second layer may be made in the form of metal box accommodating metal base covered with ceramic and/or glass-frit, and/or inorganic adhesive cement whose thickness and configuration are kept within those of metal box space. Manufacturing process involves formation of second ceramic layer for instance by way of hot molding. Upon covering metal with first layer and drying the procedure is followed by heating at the same time wetting in thermoplastic compound melt incorporating same ingredients as second-layer thermoplastic dross. Next joint heat treatment is conducted at temperature exceeding complete burnout temperature of organic binder without mandatory complete sintering of ceramic. EFFECT: enhanced heat-transfer efficiency, thermal and electric safety in operation, and reduced manufacturing cost of resistor unit. 11 cl, 4 dwg
