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Chi tiết về transistor BJT. dành cho sinh viên kỹ thuật điện-điện tử.
Electronics 1: Lecture 16 • Introduction to Systems • Laplace Transforms • BJT – Bipolar Junction Transistors Intro to Systems Transfer function Transfer functions Poles, Zeros factorization Response function of poles Response function Stable operation ==> No poles on right half-plane Block Diagrams Output is integral of input Integrator Laplace Transforms Laplace Transforms Cutoff and Saturation Saturation Cutoff Transistor as amplifier Vary Input voltage > Vary Ibase Causes VCE to move along load line > Amplification Transistor as a switch Transistor as a switch ... vout(t) BJT – Bipolar Junction Transistors • p+ > p, n+ > n emitter, collector NOT interchangeable!!! • base width small compared to minority carrier diffusion length NOT just back to back diodes: Transistor. .. RB1 RB2 both junctions reverse biased RC RE VBE < 0.7 IB = IC = 0… saturation: cut off: transistor ON transistor OFF What region? Given: npn with = 100 1.) IB = 50 μA, IC = mA? saturation: IC... NPN: invert polarities: -VCC +VCC Configurations: Biasing Modes: forward reverse forward reverse Transistor Uses: Switch: cut-off, saturation Amplifier: forward-active 15 IB =25 μ A A IB =50 μ