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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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