| 摘要 |
PURPOSE: An electromagnetic wave reduction circuit of a heating mat is provided to turn on and off voltage after voltage is reduced as an amount of condenser capacity by installing the condenser in a signal input part which is receiving on/off control signal, thereby minimizing electromagnetic wave generation and radical variations of voltage. CONSTITUTION: An electromagnetic wave reduction circuit of a heating mat includes a temperature controller. The temperature controller maintains desired heating temperature and controls DC voltage supplying time. The temperature controller is comprised of a signal input part and a charge/discharge element. A on/off control signal of DC voltage is inputted to the temperature controller. The charge/discharge element successively provides DC voltage on/off time to the signal input part. A transistor is included in order to perform switching on/off operations using the charge/discharge element. More than one condenser is included in the charge/discharge element. |
