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Electronics Practice Exercise, Exercises of Electronics

University of AllahabadElectronics

All about electronic circuits.

Typology: Exercises

2019/2020

Uploaded on 10/28/2020

chinchinpareno
chinchinpareno 🇵🇭

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Assignment/ Exercises # 10
Instruction: Solve the problem and submit pictures or scan copy of your answer with solution.
1. A Darlington pair has values of hfe1 = hfe2 = 150, and its value of RE = 1 kΩ and RB = 4.7 kΩ.
(a) Compute the value of Zi and Zo for the circuit.
(b) Solve AV and Ai for the circuit.
2. For a Feedback Pair connection, current gain βF and emitter-base turn-on voltage VBEF (ON) are
given as follows βF = β1β2 + β1 ≈ β1β2 . VBEF (ON) = VBE(ON)
Such that IC = βF IB and IE = (βF + 1) IB when both transistors are in the forward active mode.
Show that above expressions for βF and VBEF (ON) are correct.

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Assignment/ Exercises # 10 Instruction: Solve the problem and submit pictures or scan copy of your answer with solution.

  1. A Darlington pair has values of hfe1 = hfe2 = 150, and its value of RE = 1 kΩ and RB = 4.7 kΩ. (a) Compute the value of Zi and Zo for the circuit. (b) Solve AV and Ai for the circuit.
  2. For a Feedback Pair connection, current gain βF and emitter-base turn-on voltage VBEF (ON) are given as follows βF = β 1 β 2 + β 1 ≈ β 1 β 2. VBEF (ON) = VBE(ON) Such that IC = βF IB and IE = (βF + 1) IB when both transistors are in the forward active mode. Show that above expressions for βF and VBEF (ON) are correct.