Resumo

IVANOV, R. et al. Fundamentos teóricos de la optimización de la electrónica de medición para experimentos con técnicas fotopiroeléctricas. Superf. vacío [online]. 2005, vol.18, n.3, pp.17-21. ISSN 1665-3521.

When planning an experiment with the photopyroelectric technique, is necessary to find the correct parameters of the measurement equipment in order to avoid the distortion of the signal in both amplitude and phase. In this work, we present theoretical fundaments for the optimization of the parameters of the electronic equipment of measurement in both measurement ways: voltage and current. Applying the laws of Kirchhoff to the measurement electronics we found the optimum values of the electronic components, that allow the measurement regime be near the ideal.. Experimental results appear to agree well with the theory.

Palavras-chave : Relative error; Photopyroelectric; Preamplifier; Modulated radiation.