| 摘要 |
<p>PURPOSE: To prevent the generation of damage due to a thermal shock by forming a plurality of ceramic resistors into resistors, which are separated mutually by honeycomb partition walls electrically and mechanically and are mutually independent. CONSTITUTION: A plurality of ceramic resistors having the positive temperature coefficient of resistance and honeycomb partition walls mutually separating the ceramic resistors are provided. The ceramic resistor is used as a current- limiting element consisting of (V1-x Yx )2 O3 (0<=x<=0.02 and Y represents at least one kind selected from Cr and Al). A partition wall composed of an inorganic oxide or a partition wall made up of a metallic solder material is employed as the partition wall in the current-limiting element. The current-limiting element is manufactured in such a manner that the tabular body 1 of the ceramic resistor is prepared, the tabular bodies 1 are superposed on the main surfaces of the tabular bodies 1 through inorganic oxide adhesives 2 and a laminate is formed. The laminate is cut thinly not vertically to the direction of superposition to prepare superposing plates, and the superposing plates are further superposed through inorganic oxide adhesives 2 on cut surfaces.</p> |
