Hybrid Parameters

Conversion of Hybrid Parameters in Transistor Three Configurations: Some transistor manufacturers provide only the four CE hybrid parameters while others provide CB hybrid parameters. Sometimes, for a specific purpose, it becomes necessary to convert one set of h parameters in one configuration to another set in another configuration. The conversion formulas can be obtained using …

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Variations of Hybrid Parameters of a Transistor: The variation of h parameters depends upon junction temperature, collector current and collector-to-emitter voltage VCE. Among these factors, the variations of Hybrid Parameters of a Transistor due to junction temperature and collector current are significant and thus discussed here. Variation of h Parameters Due to Temperature Variation: From …

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Determination of h Parameters from Static Characteristics: Functional relationships for the CE configuration of total instantaneous collector current and base voltage in terms of two variables (base current and collector voltage) are given from earlier equations respectively. Such functional relationships are represented by families of characteristic curves of transistors, already described. Two families of curves …

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Experimental Determination of Hybrid Parameters: Determination of hybrid parameters of a general linear circuit has already been discussed. For determination of hybrid parameters for a CE transistor, consider the circuits given in Fig. 11.8. The rms values will be considered in discussion. Volt-ampere equations for a CE transistor are as given below : For measurement …

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Transistor Hybrid Model: The basic assumption in arriving at a transistor linear model or equivalent circuit is that the variations about the operating or quiescent point are small and, therefore, the transistor parameters can be considered constant over the small range of operation. Many transistor models have been proposed, each one hav­ing its particular merits …

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Hybrid Parameters of Transistor or h Parameters and Hybrid Model: A box representing a two-port network is illustrated in Fig. 11.1. The terminal behavior of a two-port device may be specified by two voltages and two currents (voltage v1, and current ii at the input port and voltage v2 and current i2 at the output …

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