| 摘要 |
A safety device of heating wire with non-electromagnetic waves is provided to enhance a safety and a stability of heating wire and temperature controller by making a fuse cut automatically in a case of an element to be damaged or shorted. In a safety device of heating wire with non-electromagnetic waves, a second heating wire(15) is wound on an outer face of a first heating wire(13). An over-voltage prevention element is connected between the first and second heating wires(13,15). A fuse is connected with the over-voltage prevention element. Wherein, a half cycle of the wire detects a temperature and the remaining half cycle performs a heating operation by an AC voltage connected between the first and second heating wires(13,15). |
