| 摘要 |
<p>PCT No. PCT/DK95/00091 Sec. 371 Date Aug. 21, 1996 Sec. 102(e) Date Aug. 21, 1996 PCT Filed Feb. 28, 1995 PCT Pub. No. WO95/23450 PCT Pub. Date Aug. 31, 1995An off mains switching system automatically switches off the mains current to current consuming units and reestablishes operational voltage thereto in response to switching on of such units. A control circuit actuates a voltage coupler in response to a unit becoming switched on and interrupts the voltage supply as a result of a detected termination of noticeable current consumption by such unit. The control circuit includes an operation capacitor with a relatively high capacity to which a charging voltage is supplied as long as the mains are connected. The operating capacitor operates as a voltage source for actuation of a control system in response to restarting of the unit. The control circuit further includes means for internally enabling a connection with the mains for maintaining a voltage supply for the control circuit when the charge on the capacitor drops below a critical level.</p> |
