ELECTRICAL ASSEMBLY AND MEASUREMENT CIRCUIT AND METHOD FOR MONITORING A COMPONENT THEREOF
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Abstract
A measuring method is provided for monitoring a component of an electrical assembly, in which the voltage across at least one component of the electrical assembly and a current through the component are measured, and in which, from measurement values for the voltage and the current, a resistance value of the component is determined. The voltage and the current are measured in successive switching periods of a periodic switching signal of the electrical assembly, and the resistance value is determined based on the measurement values for voltage and current from the successive switching periods. A measuring circuit for monitoring a component of an electrical assembly is provided with an analog/digital converter. An electrical assembly, in particular a switching power supply, having such a measuring circuit is also provided.
32 Citations
20 Claims
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1-10. -10. (canceled)
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11. A measurement method for monitoring a component of an electrical assembly, comprising the steps of
(a) measuring a voltage across and a current through at least one component of the electrical assembly in successive switching periods of a periodic switching signal of the electrical assembly; - and
(b) determining a resistance value of the component on the basis of the measured values of voltage and current from the successive switching periods. - View Dependent Claims (12, 13)
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- 14. A measurement circuit for monitoring components of an electrical assembly, comprising an analog/digital converter and a multiplexer for connecting said analog/digital converter with the electrical assembly to selectively measure at least one of the voltage across and the current through at least one component.
Specification