POWER SUPPLY MONITOR
First Claim
1. An electrical circuit, comprising:
- a comparator that receives a first signal at a first input pin, wherein the first signal is indicative of a current drawn from a power supply unit (PSU), wherein the PSU delivers power to an electronic component, wherein the comparator receives a second signal at a second input pin, wherein the second signal is indicative of a voltage provided by the PSU to the electronic component and is set to a predetermined threshold, wherein an output of the comparator changes if a difference exists between the first signal and second signal; and
a variable gain amplifier that provides the first signal to the comparator, wherein a gain of the variable gain amplifier is set according to the predetermined threshold.
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Accused Products
Abstract
An electrical circuit includes a comparator that receives a first signal at a first input pin, where the first signal is indicative of a current drawn from a power supply unit (PSU) that delivers power to an electronic component. The comparator substantially simultaneously receives a second signal at a second input pin, where the second signal is indicative of a voltage provided by the PSU to the electronic component and is set to a predetermined threshold. An output of the comparator changes if a difference exists between the first signal and the second signal. The electrical circuit includes a variable gain amplifier that provides the first signal to the comparator, where a gain of the variable gain amplifier is set according to the predetermined threshold.
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Citations
20 Claims
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1. An electrical circuit, comprising:
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a comparator that receives a first signal at a first input pin, wherein the first signal is indicative of a current drawn from a power supply unit (PSU), wherein the PSU delivers power to an electronic component, wherein the comparator receives a second signal at a second input pin, wherein the second signal is indicative of a voltage provided by the PSU to the electronic component and is set to a predetermined threshold, wherein an output of the comparator changes if a difference exists between the first signal and second signal; and a variable gain amplifier that provides the first signal to the comparator, wherein a gain of the variable gain amplifier is set according to the predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method comprising:
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providing a first signal from a variable gain amplifier to a comparator at a first input pin, wherein the first signal is indicative of a current drawn from a PSU, wherein the PSU delivers power to an electronic component; and providing a second signal at a second input pin to the comparator, wherein the second signal is indicative of a voltage provided by the PSU to the electronic component and is set to a predetermined threshold, wherein an output of the comparator changes if a difference exists between the first signal and second signal, wherein a gain of the variable gain amplifier is set according to the predetermined threshold.
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20. An electrical circuit, comprising:
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means for providing a first signal from a variable gain amplifier to a comparator at a first input pin; a power supply means, wherein the first signal is indicative of a current drawn from the power supply means, wherein the power supply means delivers power to an electronic component; and means for providing a second signal at a second input pin to the comparator, wherein the second signal is indicative of a voltage provided by the power supply means to the electronic component and is set to a predetermined threshold, wherein an output of the comparator changes if a difference exists between the first signal and second signal, wherein a gain of the variable gain amplifier is set according to the predetermined threshold.
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Specification