Course Description

Course Overview

This course covers the essential principles and techniques involved in repairing and maintaining power supplies, inverters, and UPS (Uninterruptible Power Supply) systems. Students will gain practical knowledge in diagnosing, troubleshooting, and repairing common faults in these systems, which are widely used in residential, commercial, and industrial settings.

Course Duration

3 to 6 months (depending on schedule and depth of instruction)

Eligibility

• No prior electronics experience required
• Basic understanding of electrical concepts is helpful but not mandatory
• Ideal for those looking to pursue careers in electronics repair and maintenance

Course Objectives

• Understand the fundamentals of electronics, power supply systems, inverters, and UPS
• Learn to troubleshoot and repair faults in power supplies, inverters, and UPS systems
• Gain hands-on experience in maintaining and servicing electronic systems for optimal performance
• Understand safety protocols for working with electrical and electronic systems
• Develop the skills needed to become a technician in the power supply and backup industry

Course Syllabus

1. Introduction to Basic Electronics

• Basic electronic components: resistors, capacitors, diodes, transistors, and ICs
• Understanding Ohm’s Law, Kirchhoff's Laws, and other fundamental principles
• Power, voltage, current, and resistance in electrical circuits
• Tools and instruments used in electronics repair: multimeter, oscilloscope, soldering iron, etc.
• Introduction to circuit diagrams and symbols

2. Overview of Power Supply, Inverters, and UPS Systems

• What is a power supply, inverter, and UPS? Their role in electrical systems
• Types of power supplies (AC to DC, DC to DC, regulated and unregulated)
• Functioning and working principle of inverters and UPS systems
• Common applications of power supplies, inverters, and UPS (household appliances, computers, industrial machinery, etc.)

3. Working Principle of Power Supplies

• Components of a power supply: transformer, rectifiers, filters, regulators
• AC to DC conversion: Rectifiers and filters
• Voltage regulation techniques: linear and switching regulators
• Power supply design: How to design and troubleshoot basic power supply circuits
• Common issues in power supplies: voltage fluctuations, overvoltage, under-voltage, short circuits, and failures

4. Inverter Systems

• Types of inverters: Square wave, sine wave, modified sine wave inverters
• Working principle of inverters: DC to AC conversion
• Key components: battery, inverter circuit, control board, transformer
• Common inverter faults and troubleshooting techniques
• How to test and measure the efficiency and output of inverters
• Maintenance of inverter systems: battery replacement, inverter calibration

5. Uninterruptible Power Supply (UPS) Systems

• Types of UPS: Offline, Line-Interactive, and Online UPS
• UPS components: Rectifier, inverter, battery, and charger
• UPS working principle and how it provides backup power
• Common UPS faults: battery failure, charger malfunction, inverter issues, overload
• UPS maintenance: Checking battery voltage, cleaning terminals, and load testing
• Diagnostics and performance testing for UPS systems

6. Troubleshooting Power Supplies, Inverters, and UPS

• Basic troubleshooting steps: Visual inspection, component testing, and diagnostic tools
• Using a multimeter and oscilloscope for testing and troubleshooting
• Identifying common electrical faults: blown fuses, faulty capacitors, damaged transistors, etc.
• Circuit analysis and fault isolation in power supply circuits
• Troubleshooting inverter and UPS faults: Inverter not starting, UPS not switching to battery, etc.
• Practical scenarios of troubleshooting and fixing real-world faults

7. Safety Protocols for Electronics Repair

• Electrical safety: Handling high-voltage circuits and components safely
• Proper grounding and isolation techniques for working with electronic devices
• Protection against short circuits, electric shock, and component damage
• Importance of using insulated tools and wearing protective gear
• Safety measures when working with batteries and capacitors

8. Repair and Maintenance Practices

• Soldering techniques: Removing and replacing faulty components
• Repairing and replacing damaged components: resistors, capacitors, diodes, and transistors
• Cleaning and maintaining UPS, inverter, and power supply systems for long-term reliability
• Conducting functional tests and calibrations post-repair
• Replacing worn-out batteries in UPS and inverter systems
• Software updates and configuration for smart UPS systems

9. Preventive Maintenance of Power Supply, Inverters, and UPS

• Routine checks and maintenance tasks for power supplies, inverters, and UPS systems
• How to ensure longevity and efficiency of power backup systems
• Battery management: checking battery health, replacing batteries, ensuring proper charging cycles
• Preventive measures to avoid system failure: ensuring proper ventilation, avoiding overloading, etc.
• Scheduling maintenance for uninterrupted service in critical environments

10. Customer Service and Professionalism

• Communicating with customers: explaining technical issues and solutions
• Providing cost estimates and timeframes for repairs
• Dealing with customer complaints and providing excellent service
• Offering maintenance contracts and ensuring repeat business
• Keeping up with new technology in power supplies, inverters, and UPS systems

Practical Training

• Hands-on training in repairing and servicing power supplies, inverters, and UPS systems
• Disassembling and diagnosing faults in actual devices (e.g., UPS, inverter circuits)
• Testing components and measuring output voltages and current
• Replacing faulty components, such as capacitors, transistors, and fuses
• Conducting maintenance checks and servicing power backup systems
• Performing battery replacement and load testing on UPS systems

Assessment and Certification

• Written exam covering theoretical knowledge of electronics, power supplies, inverters, and UPS systems
• Practical exam to demonstrate the ability to repair and maintain power supply systems
• Certificate of completion after successful assessments

Career Opportunities

• Electronics repair technician specializing in power supplies, inverters, and UPS systems
• Service technician for UPS and inverter companies
• Field service technician for power backup systems in residential, commercial, and industrial settings
• Entrepreneur: starting an electronics repair and maintenance business
• Technicians for critical infrastructure that rely on uninterrupted power supply (hospitals, data centers, etc.)

This course prepares individuals to troubleshoot, repair, and maintain essential power systems in various applications, offering a solid foundation in the field of electronics repair.