| 摘要 |
<p>The present invention relates to a power line communications device which comprises a transmission module and a reception module of an electric outlet in an AC line and can control load on an electrical product. More specifically, the present invention relates to a power line communications device, for example, always maintains a synchronization point in real time by using a zero cross-point using a photocoupler on a power line of 40-100 Hz, senses the zero cross-point in a one-chip MICOM, and can transmit digital data to the AC line. According to the present invention, an input terminal of the power line transmission line is connected to a bridge rectifier through a surge protection circuit and an EMI filter, an integrated circuit, having a diode through which rectified voltage of the rectifier passes and a series-parallel capacitor are connected to a resistance to be provided with the photocoupler through a plurality of resistance; in the integrated circuit, Vcc voltage is output by an inductor through a resistance, a diode, and a condenser and is supplied as DC power to one-chip MICOM, a remote control module, a buzzer, a photocoupler, and a phototriac; and the photocoupler has an input terminal, connected to a Zener diode, and an output terminal, connected to the one-chip MICOM through a transistor, and the one-chip MICOM is connected to a remote control, a switch, and a buzzer, which notifies abnormality. Output of the one chip MICOM is connected to the phototriac through the transistor. Output of the phototriac is connected to a gate of a triac through a diac. The triac has an input/output terminal connected through a serial resistance and a condenser. Another output terminal is connected to a serial- parallel fuse and a varistor.</p> |
