Patent ID: 8166318

Claim:
A power circuit, comprising: a memory power circuit comprising a first operational amplifier and a first switch, wherein a non-inverting input of the first operational amplifier is connected to a first power source via a first resistor, and grounded via a second resistor, an inverting input of the first operational amplifier is grounded via a first capacitor, an output of the first operational amplifier is connected to the inverting input of the first operation amplifier via a third resistor, a first terminal of the first switch is connected to the first power source, a second terminal of the first switch is connected to the output of the first operational amplifier, a third terminal of the first switch is connected to a first node between the third resistor and the first capacitor, the first node is connected to a power terminal of a memory slot; and a central processing unit (CPU) power circuit comprising a second operational amplifier and a second switch, wherein a non-inverting input of the second operational amplifier is connected to the first power source via a fourth resistor, and grounded via a fifth resistor, an inverting input of the second operational amplifier is grounded via a second capacitor, an output of the second operational amplifier is connected to the inverting input of the second operational amplifier via a sixth resistor, a first terminal of the second switch is connected to the first node between the third resistor and the first capacitor, a second terminal of the second switch is connected to the output of the second operational amplifier, a third terminal of the second switch is connected to a second node between the sixth resistor and the second capacitor, the second node is connected to a power terminal of a CPU.