| 摘要 |
PURPOSE:To prevent damages to elements or destroy of RAM data by reducing the arc noises occurred during instantaneous breaking of main relays. CONSTITUTION:This circuit comprises an AC load 103 driven by an AC power supply, a fuse 101 for protecting 104, TRIACs 104 and 106, a main relay 102 and a main controller 111 for turning off the main relay at the time of occurrence of control anomaly. The main controller 111 turns off TRIACs 104 and 106 during the occurrence of control anomaly, cuts off power supply to the loads 103 and 104 and thereafter turns off the main relay. |
