Power Supply Systems I

Electronics Engineering · Level 5  ·  4 Chapters

Compiled by: Beatrice Chepkorir

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What Power Supply Systems I covers

In this unit, you will be able to confidently identify, install, and maintain power supply systems, ensuring they are safe, reliable, and tailored to real-world needs. You’ll learn how to select the right components, follow essential safety regulations, and carry out crucial testing and maintenance tasks. By the end, you’ll be ready to work hands-on with power supply systems, making sure they operate efficiently and safely in any environment.

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Careers after Power Supply Systems I

In this unit you’ll learn the hands-on skills that keep Kenya’s power flowing safely and reliably. Whether you join a large-scale energy project, support critical infrastructure in a county, or set up your own service shop, the abilities you master here open doors to many rewarding jobs across the country.

  • Telecom tower maintenance crews in the Rift Valley - you install, earth and test tower power supplies, ensuring uninterrupted signal for mobile networks and earning daily wages or contract fees.
  • Solar micro-grid projects in remote Turkana villages - you select and assemble components that match harsh desert conditions, then perform routine maintenance, earning a salary as a field technician or as a self-employed installer.
  • Industrial manufacturing plants in Kiambu and Nakuru - you identify and replace DC and AC power modules on production lines, follow OSHA and IET safety rules, and receive a steady monthly wage as a plant electrician.
  • Hospital biomedical departments in county referral hospitals - you test and troubleshoot power supplies for critical equipment such as ventilators and imaging machines, earning professional pay as a biomedical support engineer.
  • Data centre facilities in Nairobi’s Upper Hill - you carry out precision assembly of power distribution units, perform grounding checks, and conduct load-capacity testing, securing a well-paid specialist role.
  • Mining operations in Kitale and Kitui - you apply earthing and grounding standards to heavy-duty power rigs, ensuring worker safety and collecting overtime bonuses for high-risk work.
  • Construction sites for high-rise projects in Mombasa’s waterfront district - you install temporary power supplies, follow IEE regulations for safety, and get paid per project or as a site electrician.
  • Automotive service workshops in Eldoret - you identify printed circuit boards in vehicle control units, troubleshoot faults, and charge customers for diagnostics and repairs.
  • Electronics repair kiosks in Nairobi’s Westlands - you use digital and analogue instruments to assemble and test small-scale power adapters, earning income from each repaired device.
  • Renewable-energy start-ups developing battery-back-up systems in Kisumu - you select components based on load and environmental factors, assemble prototypes, and receive equity or profit shares as a technical co-founder.
  • Government rural electrification teams in Kitui and Meru - you follow national safety standards while installing community power supplies, earning a civil service salary and allowances for field travel.

Mastering these skills means you can keep lights on, machines running, and communities connected - whether you work for a large employer or launch your own venture. Your expertise will be in demand wherever reliable power is needed. Keep building, stay safe, and let your knowledge power Kenya’s future!

Chapters

6 past papers for this unit →

What Power Supply Systems I covers: 31 main topics in 4 chapters

1. Identify power supply components

  1. 1.1 P-N juction
  2. 1.2 Introduction to BJT
  3. 1.3 BJT configuration
  4. 1.4 Meaning of terms
  5. 1.5 Components of power supply
  6. 1.6 Transformer
  7. 1.7 Single phase rectifiers
  8. 1.8 Filters
  9. 1.9 Voltage regulators
  10. 1.10 Voltage divider
  11. 1.11 DC power converters
  12. 1.12 Protection components of a supply system
  13. 1.13 Fuses
  14. 1.14 Types of fuses
  15. 1.15 Varistor
  16. 1.16 Circuit breakers
  17. 1.17 Types of circuit breakers

2. Assemble tools, equipment and materials

  1. 2.1 Classification of tools used in power supply system installation
  2. 2.2 Printed circuit boards identification

3. Install power supply system

  1. 3.1 Factors to consider in installation of power supply systems
  2. 3.2 Safety during power supply installation
  3. 3.3 Power supply component fixing techniques
  4. 3.4 Troubleshooting
  5. 3.5 Common faults in Electrical equipment's
  6. 3.6 Fault diagnosis procedure
  7. 3.7 Repair/Replace of components in Electrical equipment's

4. Test power supply system

  1. 4.1 Visual inspection
  2. 4.2 Types of tests
  3. 4.3 Testing tools
  4. 4.4 Importance of testing
  5. 4.5 IEE Regulations

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Beyond the syllabus

Other units in Module II