A nonideal SCR (silicon controlled rectifier) macromodel for analog power circuit simulation using SPICE has been developed. This model adds important second-order effects such as overvoltage and critical dV/sub Ak//dt switch-on, turn-on, and tq times, threshold gate trigger voltage, and nonlinear on-state characteristics. The parameters of any specific SCR can be easily obtained from its data sheet specifications. Any kind of thyristor, from high power up to fast turn-off, can be modeled with only 10 well-defined parameters. Electronic systems with electrical transients can be successfully simulated. Good agreement between manufacturer data sheet specifications and simulated results has been observed for all the thyristors considered.>
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Gracia et al. (1990) studied this question.
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