Patent ID: 6528902
Filing Date: 2003-03-04
Classification: H02J

Abstract:
A device for controlling a power distribution of 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 including a current sensing resistor connected in series to said power input and also connected in series with said primary device and converting a current drawn by said primary device into voltage and a triac connected parallel to and driven directly by said current sensing resistor and sensing when the voltage across said current sensing resistor created by said primary device exceeds a gate trigger voltage of said triac so that when said voltage across said current sensing resistor exceeds the gate trigger voltage said triac turns on; and executing means operatively connected with said sensing means and operative for supplying current to said at least one secondary device when said triac turns on in response to said voltage across said current sensing resistor exceeding the gate trigger voltage of said triac; and means for limiting voltage across said sensing means so as to limit heat produced by said sensing means but at the same time to allow tripping of said sensing means.