Patent ID: 8806234
Filing Date: 2014-08-12
Classification: G06F

Abstract:
1. A motherboard, comprising: a motherboard power supply connector configured for connecting a power supply unit, the motherboard power supply connector having a power supply on pin and a power good pin, the power good pin configured for receiving a power good signal from the power supply unit; and a time delay circuit having an input terminal configured for receiving a power supply on signal and an output terminal, the output terminal connected to the power supply on pin and configured for sending the power supply on signal to the power supply on pin after a time delay determined by the time delay circuit, the time delay circuit comprising a time delay chip and a capacitor, the time delay chip having an input pin configured for receiving the power supply on signal, an output pin connected to the power supply on pin, and a reset period programming pin grounded via the capacitor, and a relationship between the value of a time delay T of the time delay chip and a capacitance C of the capacitor being characterized by the following equation: C=(T−0.5×0.001)×175, where a unit of the capacitance C is nanofarad and a unit of the time delay T is second.