| 摘要 |
PURPOSE: A multi-socket for power saving is provided to automatically switch powers of additional loads by power-on/off of a main computer, so that power consumption is saved. CONSTITUTION: Power rectified onto bridge diodes(D1-D4) is smoothed as a condenser(C2), to be switched onto a cramping circuit(5) and a relay coil(Ry), thereby power of a load side are supplied or intercepted. If a main computer is turned on, supplying power to the bridge diodes rectifies the power in which cramp-power diodes(D5-D9) are continued. Simultaneously, triggering a base of a second transistor(Q2) turns on the main computer to continue a first transistor(Q1), which leads to excite the relay coil. And a movable contact of the relay is switched into a second fixed contact(B), which brings power to connectors(CN3-CNn) of a load side. In contrast, if the power of the main computer is cut off, the transistors are turned off, so that the movable contact is recovered from the second fixed contact, and switched into a first fixed contact(A). Consequently, powers supplied to the connectors are off. That results does not have to respectively turn off each switch of the load side.
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