UEENEEH111A – Trouble. d.c. power supplies
Nationally agreed nominal hours: 40
TAFE NSW hours: 36
T1. power supplies operating principles and applications
- Power supply function
- Block diagram identifying each sub-system
- Expected waveforms in a power supply
- Constant Voltage
- Constant Current
T2. D.C. rectification circuits
- Junction diode characteristics
- Transformer turns ratio and losses
- Half wave and full wave rectifiers
- Dual rail supply
T3. Filter circuits
- Capacitive and inductive filters
- Ripple
T4. Zener diode regulator
- Zener shunt regulator circuit
- Load and line regulation definitions
- Operating parameters and data sheets
T5. Three terminal regulator circuits
- Need for regulation
- Three terminal regulator characteristics
- Short circuit protection
- Line and load regulation
- Regulated power efficiency
- Remote voltage sensing
T6. Electronic testing and measuring devices and techniques
- Test/measuring devices and their application – analogue and digital multimeters, voltage and digital testers, signal generators and oscilloscopes
- Connection of test/measuring devices into a circuit encompassing:
- safety procedures
- circuit arrangement of test/measuring devices
- Taking readings
- Storage, maintenance and care of test/measuring devices
T7. D.C. power supply testing and fault finding
- Rectifier diode faults
- Zener diode faults
- Three terminal regulator faults
T8. OH&S
- Apply safe working practices and relevant Standards, Codes and Regulations