22-Elec-A5 Electronics
Worked solutions to 14 past sittings (2013–2019), 72 questions. Pick a sitting, or start from a topic below.
- December 2019
- December 2018
- May 2018
- December 2017
- May 2017
- December 2016
- May 2016
- December 2015
- May 2015
- December 2014
- May 2014
- December 2013
- May 2013
- Undated paper
Topics across the sittings
Topics that come up in more than one sitting, taken from the headings of our worked solutions. A topic counts once per sitting.
- Common-Gate MOSFET Amplifier (5 sittings): December 2018 Q3 · December 2017 Q1 · December 2015 Q4 · December 2013 Q4 · Undated paper Q2
- Gain (4 sittings): December 2018 Q1 · May 2018 Q5 · December 2017 Q4 · May 2017 Q1
- Bias Design (3 sittings): May 2018 Q5 · December 2017 Q4 · May 2017 Q1
- Common-emitter amplifier design (3 sittings): May 2018 Q3 · May 2013 Q2 · Undated paper Q3
- Common-Source MOSFET Amplifier (3 sittings): May 2018 Q5 · May 2017 Q1 · May 2014 Q2
- Current (3 sittings): May 2018 Q1 · December 2014 Q2 · Undated paper Q1
- Output waveform (3 sittings): May 2018 Q2 · May 2016 Q2 · May 2013 Q3
- Common-Collector Design (2 sittings): December 2015 Q5 · December 2013 Q2
- Common-Source Amplifier (2 sittings): December 2017 Q4 · December 2014 Q4
- Enhancement-Load NMOS Inverter (2 sittings): December 2018 Q4 · May 2013 Q1
- Op-Amp / Diode Circuits (2 sittings): May 2016 Q2 · May 2013 Q3
- Slew Rate (2 sittings): December 2017 Q3 · May 2015 Q1
Questions by sitting
December 2019
December 2018
- Question 1: Op-Amp with T-Network Feedback — Offset and Gain
- Question 2: Bridge Rectifier Driven by a Unipolar Square Wave
- Question 3: Common-Gate MOSFET Amplifier
- Question 4: Enhancement-Load NMOS Inverter (VTC)
- Question 5: BJT DC Bias — Solve for the Node Voltages
May 2018
- Question 1: Current and voltage across the bridge resistor R₅
- Question 2: Instrumentation amplifier — transfer function and output waveform
- Question 3: Common-emitter (PNP) amplifier design
- Question 4: Currents in the ideal-diode ladder
- Question 5: Common-source MOSFET amplifier — bias design and gain
December 2017
- Question 1: Common-Gate MOSFET Amplifier
- Question 2: Bridge Rectifier with a Failed Diode
- Question 3: Non-Inverting Amplifier — Bandwidth and Slew Rate
- Question 4: Common-Source Amplifier — Bias Design and Gain
- Question 5: DC Bias of a Two-Stage NPN–PNP Amplifier
May 2017
- Question 1: Common-Source MOSFET Amplifier — Bias Design and Gain
- Question 2: Op-Amp Peak / Envelope Detector
- Question 3: Current Gain of a T-Network Feedback Stage
- Question 4: Two-Stage BJT DC Bias (NPN + PNP)
- Question 5: Diode Wave-Shaping — Five Clamper Circuits
December 2016
- Question 1: Zener + MOSFET Series Voltage Regulator
- Question 2: Op-Amp Transfer Function and Output Offset
- Question 3: PNP Common-Emitter Amplifier
- Question 4: Matched NMOS Pair with Diode-Connected Reference
- Question 5: Bridge Rectifier with Capacitor Filter
May 2016
- Question 1: Enhancement-Load NMOS Amplifier
- Question 2: Op-Amp / Diode Circuit — Output Waveform
- Question 3: Ideal-Diode Resistor Network
- Question 4: Common-Source Amplifier Bias Point
- Question 5: Op-Amp / Diode Wave-Shapers — Output Sketches
December 2015
- Question 1: Resistor Bridge with a Diode-Coupled Arm
- Question 2: Op-Amp Limiter with a Zener in the Feedback Path
- Question 3: Two-Op-Amp Circuit — Derive v O1 and v O2
- Question 4: Common-Gate MOSFET Amplifier
- Question 5: Common-Collector (Emitter-Follower) Design
May 2015
- Question 1: Slew Rate and Rise Time of a Unity-Gain Follower
- Question 2: Diode Bridge Waveform Sketch
- Question 3: Op-Amp Comparator with Positive Feedback (Schmitt Trigger)
- Question 4: DC Bias Points of Five BJT Circuits
- Question 5: Common-Source Amplifier Design
December 2014
- Question 1: Diode Waveshaping — Voltage Doubler
- Question 2: Resistor Bridge — Current and Voltage in R 5
- Question 3: CMOS Inverter Voltage Transfer Characteristic
- Question 4: Common-Source Amplifier — DC Operating Point
- Question 5: Three-Op-Amp Instrumentation Amplifier
May 2014
- Question 1: Difference-Amplifier Design
- Question 2: Common-Source MOSFET Amplifier
- Question 3: Zener-Feedback Op-Amp Waveform
- Question 4: BJT Gain Stage
- Question 5: Diode Wave-Shaping Circuits
December 2013
- Question 1: CMOS Inverter Voltage-Transfer Characteristic
- Question 2: Common-Collector (Emitter-Follower) Design
- Question 3: Three-Op-Amp Difference Network
- Question 4: Common-Gate MOSFET Amplifier
- Question 5: Ideal-Diode Wave-Shaping Circuits
- Question 6: Op-Amp + Diode Wave-Shaping Circuits
May 2013
- Question 1: Enhancement-Load NMOS Inverter — Voltage Transfer Characteristic
- Question 2: Common-Emitter Amplifier Design
- Question 3: Op-Amp / Diode Circuits — Output Waveforms
- Question 4: Op-Amp with Zener Feedback and Slew-Rate Limit
- Question 5: Bridge Rectifier with a Failed Diode
- Question 6: Common-Gate Amplifier
Undated paper
- Question 1: Resistive bridge — current and voltage across R 5
- Question 2: Common-gate MOSFET amplifier
- Question 3: Common-emitter amplifier design
- Question 4: NMOS amplifier with n-channel enhancement load
- Question 5: Ideal-diode output-waveform sketches