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Electrothermal model of optocoupler for SPICE. (English) Zbl 1172.78306
Summary: A new electrothermal model of the optocoupler for SPICE is proposed. The model is based on electrical models of the LED and the bipolar phototransistor with their parameters dependent on temperature, their thermal models including both the self-heating phenomenon and the mutual thermal interactions between the LED and the phototransistor, and the dependences describing electrical power dissipated in these components. The final form of the electrothermal model of the optocoupler elaborated by the authors, dedicated to the d.c. and a.c. computations, was implemented in SPICE. The usefulness of the new model was experimentally verified for the optocoupler 4N25.
78A55 Technical applications of optics and electromagnetic theory
78A50 Antennas, waveguides in optics and electromagnetic theory
80A20 Heat and mass transfer, heat flow (MSC2010)
78A40 Waves and radiation in optics and electromagnetic theory
Full Text: DOI
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