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22-Elec-A5 Electronics: May 2016

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Enhancement-Load NMOS Amplifier
  2. Question 2 Op-Amp / Diode Circuit — Output Waveform
  3. Question 3 Ideal-Diode Resistor Network
  4. Question 4 Common-Source Amplifier Bias Point
  5. Question 5 Op-Amp / Diode Wave-Shapers — Output Sketches

Start with Question 1 →

National Exam — 07-Elec-A5 Electronics — May 2016. Closed-book; non-communicating calculator permitted; three hours. Five questions, 20 marks each — all five constitute a complete paper, so every question is solved below. Op-amps are ideal with supply rails of ±15 V unless a question states otherwise.

Reference texts (22-Elec-A5 Electronics): A. S. Sedra & K. C. Smith, Microelectronic Circuits, 7th/8th ed. (Oxford) — diodes (Ch. 4), MOSFETs and biasing (Ch. 5/7), op-amp circuits (Ch. 2), signal generators / wave-shaping (Ch. 17), MOS logic inverters (Ch. 14); R. C. Jaeger & T. N. Blalock, Microelectronic Circuit Design (McGraw-Hill).

Check / figure note: every schematic below was redrawn from the printed figures of the paper. Where the paper omits a numeric supply (Q1), the transfer curve is drawn to scale for an illustrative VDD = 5 V and the symbolic result is stated alongside.