Patent ID: 8154302

Claim:
An electrical power supply device for a logic unit, comprising: a control member for transmitting a control voltage, a power relay, transmitting a power voltage when the power relay is controlled, an electronic stage controlling the power relay i) when the electronic stage receives the control voltage from the control member or ii) when the receiving a control voltage from the logic unit, a voltage regulator transmitting a power supply voltage to the logic unit when the voltage regulator receives the power voltage from the power relay and one of the control voltages, and a wake-up means transmitting an additional control voltage to the voltage regulator when the power relay transmits the power voltage, wherein the wake-up means is such that it transmits the additional control voltage to the voltage regulator i) when the wake-up means receives the control voltage from the control member and ii) when the wake-up means receives the power voltage from the power relay, and wherein the wake-up means comprises a logic “OR” between the control voltage obtained from the control member and the power voltage obtained from the power relay to transmit the additional control voltage to the voltage regulator.