| 摘要 |
A capacitor is made up of a housing; a first plurality of capacitors within the housing; a second plurality of capacitors within the housing; a first electrode coupled to a first terminal, with the first terminal being electrically contactable outside the housing; a second electrode coupled to a second terminal, with the second terminal being contactable outside the housing; a threshold circuit that compares performance of the first plurality of capacitors with performance of the second plurality of capacitors, detects an unbalance, and generates an output signal; and a signal output coupled to the threshold circuit, the signal output being accessible outside the housing. A method of operating a capacitor has steps of coupling a first electrode of the capacitor to a system; coupling a second electrode of the capacitor to a system; applying a voltage across the first and second electrodes; detecting an unbalance within the capacitor; determining whether a degree of such unbalance is greater than a first threshold and less than a second threshold; signaling the detected unbalance in the event the degree of such unbalance is greater than a first threshold and less than a second threshold; determining whether the degree of such unbalance is greater than the second threshold; and initiating a shutdown of the capacitor in the event the degree of such unbalance if greater than the second threshold.
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