![]() 6ħ Large-Signal dc Analysis: characteristics of an npn BJT VCB reverse bias ? VBE reverse bias ? If small forward-bias voltage of up to about 0.5 V are applied, the currents are often negligible and we use the cutoff-region model. Important: a current-controlled current source models the dependence of the collector current on the base current VCB reverse bias ? VBE forward bias ? The constrains for IB and VCE must be satisfy to keep BJT in the active-mode 4ĥ Large-Signal dc Analysis: Saturation-Region ModelĦ Large-Signal dc Analysis: Cutoff-Region Model Presentation on theme: "Bipolar Junction Transistor Circuit Analysis"- Presentation transcript:ġ Bipolar Junction Transistor Circuit AnalysisīJT Transistor Circuit Analysis Large signal DC analysis Small signal equivalent Amplifiers Bipolar Junction Transistors 2ģ Circuit with BJTs Our approach: Operating point - dc operating pointĪnalysis of the signals - the signals to be amplified Circuit is divided into: model for large-signal dc analysis of BJT circuit bias circuits for BJT amplifier small-signal models used to analyze circuits for signals being amplified Remember ! 3Ĥ Large-Signal dc Analysis: Active-Region Model
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