Patent ID: 6574082
Filing Date: 2003-06-03
Classification: H05K

Abstract:
A method of operating electronic equipment in an enclosure wherein the electronic equipment is powered by a DC power source including a rectifier that receives an AC power signal and a battery that provides backup when the AC power signal is interrupted, the method comprising:monitoring a DC power signal generated by the DC power source; monitoring a temperature in the enclosure for the electronic equipment; blocking the DC power signal from the electronic equipment in the enclosure when the DC power signal is less than a low voltage threshold for the battery or when the temperature in the enclosure is outside a range of first high and low temperature thresholds for operation of the electronic equipment; providing the DC power signal to the electronic equipment in the enclosure when the DC power signal is above the low voltage threshold for the battery and when the temperature in the enclosure is within the range of the first high and low temperature thresholds for operation of the electronic equipment; operating a temperature control fan when the DC power signal is above the low voltage threshold and the temperature is outside a range of second high and low temperature thresholds for operation of the fan; and blocking operating of the temperature control fan when the DC power signal is less than the low voltage threshold for the battery or when the temperature is within the range of the second high and low temperature thresholds for operation of the fan.