Our electrical department educates our students on the general principles of electrical technology. We provide training in the servicing, maintenance, installation and repairs of motors, transformers and generators used in refrigeration and air-conditioning systems, while also providing knowledge of their inner parts and design. Our program is designed to equip students with the key skills necessary to work in fields including automotive, electrical works, air conditioning, PLC and motor control.

Subject Outline

Don Bosco Technical School provides a two-year technical skill education that combines theoretical studies with practical workshop teachings. The following subject outline overviews the summary of the skills and expertise taught to our students within the electrical department.

  • Electrical Systems
  • Generators
  • Electrical Motors
  • Skills in Welding
  • Motor Control
  • Air Conditioning Systems
  • PLC and Motor Control

Course Breakdown


Basics of Electronics

  • Contactors
  • Single Phase and Three Phase Motors
  • Theory of Transformers
  • Power Transformers
  • Auto Transformers
  • Analogue Multi-Meter
  • Digital Multi-Meter
  • Resistors and Resistance
  • Capacitor and Capacitance
  • Diode
  • Transistors
  • Soldering Components on Board
  • Power Supply Adapters

Electrical Systems

  • Multi-Meters
  • Wiring Connection
  • Electrical Wiring
  • Electrical Fluorescent Installation Circuits
  • Electrical Power Meters
  • Short Circuits


  • Safety First and Tools Used

  • Maintenance of Engine Generators
  • Turn up Engine Generators
  • Repairing and Servicing of Generators
  • Trouble Shooting Engines

Electrical Motor

  • Working Electrical Machines
  • Principles of Electrical Motors
  • Contact Router Motors
  • Capacitor Motors
  • Shaded Poles
  • One Speed Asynchron Three Pass Motor
  • Two Speed Asynchron Three Pass Motor
  • DC Motor
  • DC Generator
  • AC Generator

Basic Welding Skills

  • Origins and Reason of Danger
  • Filling
  • Basic Measurements
  • Sawing
  • Drilling
  • Handing Thread
  • Electric Welding
  • Gas Welding
  • Manual Cutting and Bending


Motor Controls

  • Relays and Contactors
  • Timer Relays
  • Motor Control Equipment
  • 3-Pass Motor Equipment
  • Jogging Circuits
  • Lock-it Self Circuits
  • Lock-it Self Reversing Circuits
  • 3-Phase Motor Reversing Circuits
  • 3-Phase Motor Reversing Limited Circuits
  • Single-Phase Motor Reversing Circuits
  • Single-Phase Motor Reversing Limited and Brake Circuits
  • Relay Protect Phase Circuits
  • Three Points of Circuit Control
  • Open Gate Limit Circuit

Air Conditioners

  • Peripheral of Air Conditioning Tools
  • Condensers
  • Evaporators
  • Tube Cutting
  • Tube Bending
  • Tube Expansion
  • Metal Welding
  • Checking High/Low Motor Compressors
  • Gauge Manifold
  • Vacuum and Gas Insertion
  • Oil Insertion
  • Air Conditioning Aid Tools
  • Refrigerant Equipment Tools
  • Inactivity and Repairing
  • Refrigeration
  • Cooling Systems
  • Compressor Motors
  • Temperature Control of Cooling Systems
  • Timer Relay of Cooling Systems
  • Pressure Controls
  • Starting Relay of Cooling Systems
  • Fan Motor of Cooling Systems
  • Switch Cooling System

PLC and Motor Controls

  • Motor Control
  • PLC
  • Pneumatic and Electro-Pneumatic

This Campaign has ended. No more pledges can be made.