Real-time load current detecting circuit for CPU

Details Real-time load current detecting circuit for CPU Real-time load current detecting circuit for CPU

2006-09-22

2008-10-14

Nguyen, Vincent Q (Department: 2831)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S076110, C713S300000, C323S282000

Reexamination Certificate

active

07436189

ABSTRACT:
A real-time load current detecting circuit composed of a power supply circuit, a delay circuit, a current sensing circuit, and a current feedback circuit. The power supply circuit is adapted for providing the CPU with a power source. The delay circuit includes a resistor and a capacitor, connected to the power supply circuit. The current sensing circuit includes a comparison circuit connected to the delay and power supply circuits. The current feedback circuit includes a feedback current source and a resistor, connected to the current sensing circuit. The feedback current source is adapted for mirroring a current sensed by the current sensing circuit. In light of this, the current can be accurately monitored and detected and there is hardly inaccuracy for the detection of the current.

REFERENCES:
patent: 6005758 (1999-12-01), Spencer et al.
patent: 6954706 (2005-10-01), Poirier et al.
patent: 2004/0095114 (2004-05-01), Kernahan
patent: 2006/0127066 (2006-06-01), Chiu et al.

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