Reference no: EM131225416
A MOSFET current gain amplifier is shown in Figure (a).
The transistor parameters are Kn = Kp = 10 mA/V2, VTN = 1 V, VTP = -1 V, and λn = λp = 0. The LED turn-on voltage is Vγ = 1.6 V.
Assume the LED small-signal resistance is rf = 0.
(a) Determine the quiescent currents IDQ1 and IDQ2.
(b) Determine the small-signal current gain Ai = Io/Ii .
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A BJT current gain amplifier is shown in Figure (b).
The transistor parameters are β1 = β2 = 180, VA1 = VA2 = ∞, and IS1 = IS2 = 10-15 A. The LED turn-on voltage is Vγ = 1.6 V. Assume the LED small-signal resistance is rf = 0.
(a) Determine the quiescent currents IC Q1 and IC Q2.
(b) Derive the expression for the small-signal current gain Ai = Io/Ii .
(c) Calculate the value of Ai = Io/Ii .
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Determine the small signal parameters for q1 and q2
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: Determine the quiescent currents IDQ1 and IDQ2. - Determine the small-signal current gain Ai = Io/Ii . - Derive the expression for the small-signal current gain Ai = Io/Ii .
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