Inverter Circuit Board Course

Lesson 1 • Types of Inverter Topologies

Distinguishes half-bridge, full-bridge, push-pull, and resonant topologies by structure and use case. Enables informed topology selection in later design chapters.

Lesson 2 • Inverter Board Architecture Overview

Introduces the major functional blocks of an inverter board including input stage, switching stage, and output filter. Provides a system-level map for deeper study.

Lesson 3 • Core Electrical Principles Review

Reviews voltage, current, frequency, and waveform concepts essential for inverter operation. Connects basic circuit theory to inverter board behaviour.

Lesson 4 • Safety and Handling Fundamentals

Establishes electrical safety rules, ESD precautions, and safe workspace setup for inverter board work. Safety practices introduced here apply throughout the entire course.

Lesson 1 • Transformers in Inverter Circuits

Explains transformer turns ratio, isolation, and leakage inductance effects specific to inverter boards. Transformer behaviour directly affects output voltage regulation.

Lesson 2 • Diodes and Rectifier Components

Covers fast-recovery diodes, Schottky diodes, and bridge rectifiers used in inverter input and freewheeling paths. Links diode choice to efficiency and thermal performance.

Lesson 3 • Control ICs and Driver Chips

Introduces PWM controller ICs and gate driver chips that orchestrate switching sequences. Understanding these ICs is prerequisite for the control systems chapter.

Lesson 4 • Passive Components: Inductors and Capacitors

Details the role of inductors and capacitors in filtering, energy storage, and resonance within inverter boards. Connects passive component values to output waveform quality.

Lesson 1 • Applying Kirchhoff's Laws to Inverters

Applies KVL and KCL to inverter sub-circuits to calculate voltages and currents at key nodes. Quantitative analysis validates component ratings and design choices.

Lesson 2 • Block Diagram to Schematic Correlation

Maps the architectural block diagram from Chapter 1 onto detailed schematics to reinforce system understanding. Students locate every functional block on a real board schematic.

Lesson 3 • Tracing Power and Signal Paths

Guides systematic tracing of DC bus, switching node, gate drive, and feedback signal paths on schematics. Path tracing skills underpin fault diagnosis in later chapters.

Lesson 4 • Understanding PWM Waveforms on Schematics

Explains how PWM timing diagrams relate to schematic switching sequences and output waveforms. Bridges static schematic reading with dynamic circuit behaviour.

Lesson 1 • Current Measurement Methods

Introduces current probes, shunt resistors, and Hall-effect sensors for measuring inverter currents safely. Accurate current data is essential for efficiency and protection analysis.

Lesson 2 • Measuring Switching Waveforms

Demonstrates capture and analysis of gate drive, switching node, and output waveforms on an oscilloscope. Waveform analysis directly supports fault diagnosis covered in Chapter 6.

Lesson 3 • Power and Efficiency Measurement

Explains input and output power measurement using power analysers and calculated methods to determine efficiency. Efficiency data benchmarks board performance against design specifications.

Lesson 4 • Multimeter Use on Inverter Boards

Covers DC and AC voltage, resistance, diode, and continuity measurements specific to inverter boards. Correct probe placement and range selection prevent measurement errors.

Lesson 1 • Frequency and Output Regulation

Covers output frequency control, voltage regulation under varying loads, and dynamic response testing. Regulation performance determines suitability for sensitive load applications.

Lesson 2 • Current Mode Control

Introduces peak current mode and average current mode control as alternatives to pure voltage mode. Current mode control improves transient response and inherent overcurrent limiting.

Lesson 3 • Deadtime and Shoot-Through Prevention

Explains deadtime insertion to prevent simultaneous conduction of complementary switches, avoiding shoot-through. Correct deadtime settings protect switching devices and maintain efficiency.

Lesson 4 • PWM Generation Principles

Explains how PWM signals are generated by comparing a reference with a carrier waveform inside a control IC. PWM generation is the foundation of all inverter output regulation.

Lesson 1 • Overcurrent and Overtemperature Faults

Identifies causes of overcurrent trips and thermal shutdowns, including shorted loads, failed devices, and sensor faults. Correct diagnosis prevents repeated component failures.

Lesson 2 • Component-Level Fault Isolation

Demonstrates in-circuit and out-of-circuit testing of MOSFETs, diodes, capacitors, and inductors to confirm component failure. Component-level isolation completes the diagnostic process.

Lesson 3 • Output Waveform Distortion Faults

Analyses distorted, asymmetric, or noisy output waveforms and traces them to feedback, switching, or filter faults. Waveform analysis skills from Chapter 4 are applied directly here.

Lesson 4 • Systematic Fault Diagnosis Methodology

Introduces a structured divide-and-conquer diagnostic process from symptom observation to root cause isolation. A repeatable methodology reduces diagnostic time and prevents misdiagnosis.

Lesson 1 • Soldering Tools and Station Setup

Covers soldering iron selection, temperature calibration, hot-air station use, and tip maintenance for inverter board rework. Proper tool setup is the prerequisite for all rework tasks.

Lesson 2 • Through-Hole Component Replacement

Teaches desoldering and replacement of through-hole components including large capacitors, transformers, and connectors. Correct technique prevents PCB pad and via damage.

Lesson 3 • Post-Rework Inspection and Verification

Establishes visual inspection criteria, electrical verification steps, and burn-in testing after rework completion. Verification ensures the repaired board meets original performance specifications.

Lesson 4 • SMD Component Rework Techniques

Demonstrates removal and placement of SMD resistors, capacitors, MOSFETs, and ICs using hot-air and iron methods. SMD rework precision directly affects board reliability after repair.

Lesson 1 • PCB Layout Best Practices

Applies high-current loop minimisation, gate drive routing, ground plane strategy, and component placement rules to inverter PCB layout. Good layout reduces parasitic inductance, EMI, and thermal stress.

Lesson 2 • Thermal Design and Heat Management

Covers thermal resistance modelling, heatsink selection, PCB copper spreading, and forced-air cooling design for inverter boards. Adequate thermal design prevents premature device failure under sustained load.

Lesson 3 • EMI Reduction and Filter Design

Identifies conducted and radiated EMI sources in inverter boards and applies filtering, shielding, and layout techniques to reduce emissions. EMI compliance is required for product certification.

Lesson 4 • Validation Testing and Design Iteration

Defines a structured validation test plan covering efficiency, regulation, thermal, and EMI performance to confirm design targets. Iterative testing and redesign close the gap between prototype and production.