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Comparison of Set-ups Dedicated to Measure Thermal Parameters of Power LEDs

The paper is devoted to measurements of thermal parameters of power LEDs. Two methods of measurements of transient thermal impedance and thermal resistance for the considered semiconductor devices as well as the measurement set-ups implementing these methods are described. The results of measurements of the parameters obtained using both set-ups for selected power LEDs are compared and discussed. Moreover, selected properties of software operating with both the considered measurement set-ups are also analysed.