UEENEEH138A – Fault. complex p/supplies

36 Hours nominal

T1. Series regulation

  • Operating principles
  • Operation and specifications of three terminal regulators
  • Internal protection for three terminal regulators
  • Increasing the output current of a three terminal regulator
  • Increasing the output voltage of a three terminal regulator
  • The three terminal regulator as a current regulator
  • Heat sink selection
  • Fault finding a series regulator

T2. Series regulator employing closed loop control

  • Components selection
  • Basic discrete circuits
  • Closed loop control of regulators
  • Error amplification
  • The BJT used as an error amplifier
  • Operation of a series BJT regulator employing closed loop control
  • Typical faults
  • Crowbar protection
  • Current limiting
  • Verification of circuit operation
  • Fault finding a series BJT regulator employing closed loop control

T3. Switching regulation – basic principles

  • Components selection
  • Basic principles of switching regulators
  • Pulse width modulation (PWM) and frequency modulation
  • Switching regulator configurations: step-up, step-down, inverting and isolating
  • Circuit analysis of each regulator, constructed from a BJT, inductor, diode and filter capacitor
  • Electromagnetic radiation (EMR) and noise emissions
  • Ferrite cores
  • Verification of circuit operation
  • Heat sink selection

T4. Switching regulation – closed loop control of output

  • Generic block diagram of a switching regulator employing feedback to control output voltage
  • Circuit operation
  • Typical faults
  • Emerging technologies in IC regulators
  • Verification of load regulation

T5. Off-line switching regulators

  • Isolation and safety requirements
  • Specialised safety equipment
  • Operation of flyback (buck) and forward (boost) converters
  • Typical faults
  • Verification of circuit operation

T6. OH&S

  • Safe working practices and relevant Standards, Codes and Regulations

July 2017
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