| 摘要 |
PURPOSE: A heating line and a protection circuit thereof are provided to improve safety by fundamentally preventing the overheating of a heating mat after adding a low power power saving protection circuit which is switched on by a switch on the circuit of a temperature controller for a heating mat. CONSTITUTION: A power supply unit(100-1) receives a commercial AC source. A switch(200-1) is formed in order to select a heating line and a sleep line. A heating line is formed to control temperature according to a set temperature. A hotwire(400-1) for power saving is formed in order to maintain the surface temperature of a heating mat at less than 60°. A heat LED(500-1) is turned on according to the selection of the heating line or the hotwire for power saving. |
