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22-Elec-A5 Electronics: December 2013

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

  1. Question 1 CMOS Inverter Voltage-Transfer Characteristic
  2. Question 2 Common-Collector (Emitter-Follower) Design
  3. Question 3 Three-Op-Amp Difference Network
  4. Question 4 Common-Gate MOSFET Amplifier
  5. Question 5 Ideal-Diode Wave-Shaping Circuits
  6. Question 6 Op-Amp + Diode Wave-Shaping Circuits

Start with Question 1 →

Paper format. National Exams — 07-Elec-A5 Electronics, December 2013. Closed book; non-communicating calculator permitted. Six questions of 20 marks; any five constitute a complete paper — all six are solved here as a study resource. Op-amps ideal with ±15 V supplies unless stated; diode forward drop as given per question.

Reference texts. A. Sedra & K. Smith, Microelectronic Circuits, 7th ed. (Oxford) — MOS/BJT amplifiers (ch. 7–9), diode wave-shaping (ch. 4), op-amp circuits (ch. 2), CMOS logic (ch. 14). Cross-checks from C. Sadiku, Fundamentals of Electric Circuits.

Check / source notes. All 16 schematics follow the printed drawings; diode orientations are as drawn (Q5 a/b/d, Q6 b). Q2's data block is internally inconsistent (it labels the BJT NPN yet lists VEB(on), names an RL that is not in the drawing, and gives RE = 1 kΩ while part (a) asks you to size RE); assumptions used to resolve these are stated in Q2 per the exam's "state any assumptions" instruction.