| 摘要 |
PURPOSE: An electromagnetic contactor is provided to control the operation of load by applying or secluding electricity to the load without an additional switch switching a manipulative power source. CONSTITUTION: A surge absorbing unit eliminates surge voltage included in electricity. A filter eliminates static included in electricity in which the surge voltage is eliminated. A communications unit(360) receives a control signal from outside. A controller(370) outputs a pulse signal or a DC signal. The pulse signal or the DC signal copes with the control signal. A switching unit(340) applies power supply voltage. The switching unit secludes current flow of an electromagnet coil according to the DC signal. The switching unit is turned on and off at constant time intervals according to the control signal. |
