| 摘要 |
A device for controlling a power distribution to subsystems, comprising a power input to be connected to a power source; a primary power output to be connected to a primary device; at least one secondary power output to be connected to at least one secondary system; sensing means for sensing when a current level falls below a threshold in response to the primary device being turned off and when the current level raises above a threshold in response to the primary device being turned on executing means operatively connected with said sensing means and operative for interrupting a power supply to said at least one secondary device when the sensing means sense the current level below the threshold and supplying power to said at least one secondary device when said sensing means sense the current level above the threshold correspondingly; power limiting means for limiting voltage across said sensing means and a low current operating means which increases the voltage to provide triggering of said executing means despite the limiting of the voltage by the said power limiting means.
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