| 摘要 |
PURPOSE:To simplify the structure by encapsulating a high melting point metal in a heat resistant insulator to produce a current limiting resistor then planting the supports while utilizing said insulator to support a heat producing resistor and a bimetal switch. CONSTITUTION:A current limiting resistor 12 is comprised of a high melting point metal 21 encapsulated in a heat-resistant insulator 21. Supports 22a, 22b, 23a and 23b are planted at four corners, for example, of the heat-resistant insulator 21 of the current limiting resistor 12. A heat producing resistor 11 is placed across said supports 22a, 22b. While a bimetal switch 3 is provided between other supports 23a, 23b. |
