Chpt. 4d 1

Bias-Point LocationBias-Point Location

Effect of load-line AEffect of load-line A

Effect of load-line BEffect of load-line B

Chpt. 4d 2

Biasing BJT for discrete circuitsBiasing BJT for discrete circuits

Biasing using a Single Power SupplyBiasing using a Single Power Supply Biasing using Two Power SuppliesBiasing using Two Power Supplies Biasing for common-emitter amplifiersBiasing for common-emitter amplifiers Biasing using a Current SourceBiasing using a Current Source

Chpt. 4d 3

Basic Single-Stage BJT : Basic Single-Stage BJT : common-emitter amplifiercommon-emitter amplifier

Circuit equivalent circuit (T-mode)Circuit equivalent circuit (T-mode) eliminating r_0eliminating r_0

Chpt. 4d 4

Common-base AmplifierCommon-base Amplifier

CircuitCircuit equivalent circuit (T- equivalent circuit (T-model)model)

Chpt. 4d 5

Common-collector AmplifierCommon-collector Amplifieror Emitter Followeror Emitter Follower

Circuit equivalent circuit (T-model)Circuit equivalent circuit (T-model)

Chpt. 4d 6

c-c or e-f amplifier (cont)c-c or e-f amplifier (cont)

Equivalent circuit Equivalent circuit circuit to circuit to redrawn determine R_oredrawn determine R_o

Chpt. 4d 7

Transistor as a Switch-CutoffTransistor as a Switch-Cutoff

cutoff regioncutoff region active regionactive region saturation regionsaturation region model for the Saturated BJTmodel for the Saturated BJT

Chpt. 4d 8

EBERS-MOLL (EM) Model: EBERS-MOLL (EM) Model: large-signal model for BJTlarge-signal model for BJT

npn npn transistor EM modeltransistor EM model