Public learning track
Power Amplifiers, Efficiency, and Output Stages
11th Grade · Technology · UK A-Level
10 lessons
Goal
Analyse emitter followers, source followers, complementary push-pull output stages, crossover distortion reduction, and power gain in decibels.
10 lessons
0 of 10 done
- 1Maximum Power Transfer Theorem in DC and AC CircuitsUp nextStart
- 2Impedance Matching for Loudspeaker LoadsPremiumNot started yet
- 3Emitter Follower Voltage Buffer and Current GainNot started yet
- 4Source Follower Buffer Using Power MOSFETsNot started yet
- 5Class B Complementary Push-Pull Output StagesNot started yet
- 6Origin and Waveform Analysis of Crossover DistortionNot started yet
- 7Eliminating Crossover Distortion Using Negative FeedbackNot started yet
- 8Diode Biasing and Class AB OperationNot started yet
- 9Calculating Power Gain, Voltage Gain, and Current Gain in dBNot started yet
- 10Thermal Dissipation, Heatsinks, and Amplifier EfficiencyNot started yet
Standards Covered
- ELEC-19.5General Certificate of Education Advanced Level (UK A-Level) · Electronics · Year 13 (A2 Level) · Grade 11the maximum power transfer theorem
- ELEC-19.6General Certificate of Education Advanced Level (UK A-Level) · Electronics · Year 13 (A2 Level) · Grade 11the properties of emitter and source follower power amplifiers and push-pull power amplifiers consisting of either emitter or source followers
- ELEC-19.7General Certificate of Education Advanced Level (UK A-Level) · Electronics · Year 13 (A2 Level) · Grade 11cross-over distortion and its removal using negative feedback
- ELEC-19.8General Certificate of Education Advanced Level (UK A-Level) · Electronics · Year 13 (A2 Level) · Grade 11the gain of a power amplifier expressed in dB
Curriculum Framework
11th Grade · Technology · UK A-Level
1
8 lessons
Semiconductor Physics and P-N Junctions
Explain the microscopic conduction mechanisms in intrinsic, n-type, and p-type semiconductors and analyse the operation of p-n junction diodes, LEDs, and photodiodes.
2
7 lessons
Field-Effect Transistors and MOSFET Operation
Analyse the structural physics, channel formation, pinch-off behaviour, and switching and amplification characteristics of enhancement and depletion n-channel MOSFETs.
3
9 lessons
Audio System Architecture and Multi-Stage Preamplifiers
Design and evaluate end-to-end audio systems and multi-stage voltage preamplifiers that satisfy specified voltage gain and bandwidth constraints.
4
9 lessons
Audio Mixers and Active Filter Circuits
Design virtual-earth audio mixer circuits and first-order active filters for bass and treble boost and cut tone control.
5
10 lessons
Power Amplifiers, Efficiency, and Output Stages
Analyse emitter followers, source followers, complementary push-pull output stages, crossover distortion reduction, and power gain in decibels.
6
8 lessons
Audio Digitisation, Sampling, and Dynamic Range
Examine analogue-to-digital conversion of audio signals, evaluating sampling rates, bit resolution, Nyquist criteria, and quantisation distortion.
7
8 lessons
Mains Rectification and Smoothing Networks
Design and analyse half-wave, full-wave centre-tapped, and bridge rectifier circuits with capacitive smoothing filters under varying load conditions.
8
9 lessons
Voltage Regulators and Power Supply Design
Design and analyse discrete and op-amp-based voltage regulator circuits, evaluating load regulation, line regulation, and thermal stability.
9
8 lessons
DC Thyristor Switching and Commutation
Design high-power DC thyristor (SCR) switching circuits and explain latching, holding current, and forced capacitor commutation methods.
10
9 lessons
AC Phase Control with Triacs and Diacs
Analyse and design AC phase control circuits using RC phase-shift networks, diacs, and triacs for smooth, bidirectional power control.
11
8 lessons
Radio Frequency Spectrum and RF Transmission Channels
Evaluate the radio frequency spectrum for data transmission, determining bandwidth allocations, propagation modes, and channel capacities.
12
10 lessons
Amplitude and Frequency Modulation Systems
Analyse and compare amplitude modulation (AM) and frequency modulation (FM) transmitters, receivers, spectral bandwidths, and noise immunity.
13
8 lessons
Optical Fibre Transmission, Attenuation, and Dispersion
Analyse signal propagation in optical fibres using refraction physics and quantify attenuation, modal dispersion, and chromatic dispersion mechanisms.
14
8 lessons
Optoelectronic Transmitters and Receiver Circuits
Design electronic driver circuits for optical emitters and transimpedance receiver preamplifiers for optical photodiodes.