Lec8 Bipolar Junction Transistors

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Transcript of Lec8 Bipolar Junction Transistors

Page 1: Lec8 Bipolar Junction Transistors
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CHAPTER 4

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BJT as an Amplifier

• Linearly increasing the Amplitude

• Current gain β = 𝐼𝑐

𝐼𝐵

• As IB is very small Ic ≈ IE

VcE = Vcc – Ic Rc

𝑉𝑐

𝑉𝑏Av =

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BJT as an Amplifier

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BJT as a Switch

VcE = Vcc – Ic Rc

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BJT as a Switch

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