ALTERNATE CURRENT - ALTERNATE CURRENT CONVERSION

The electrical power in alternate current is controlled by means of thyristors.

The main fields of application of the control of alternate current are in the control of temperature, lighting and induction motors.

The main types of control are: phase control, on-off control and proportional time control.

DCA 202.1 THYRISTORS AND CONTROLLED AC/AC CONVERTERS

LIST OF EXPERIMENTS

Thyristor

  • TRIAC

Single-phase controllers

  • Single-phase ac controller W1C, ohmic load
  • Single-phase ac controller W1C, inductive load
  • Single-phase ac controller W1C, ohmic-inductive load
  • Single-phase ac controller W1, ohmic load
  • Single-phase ac controller W1, ohmic-inductive load
  • Half-controlled single-phase controller W1H, ohmic load

 Three-phase controllers

  • Fully controlled three-phase controller W3C, star ohmic load without neutral
  • Fully controlled three-phase controller W3H, star ohmic load without neutral
  • Three-phase controller W3C2, star ohmic load without neutral

DCA 202.2 LIGHT DIMMER FAULT SIMULATOR

LIST OF EXPERIMENTS

Phase control for the regulation of lighting with fault simulation.

Double time-constant standard light dimmer circuit consisting of triac, diac, two control potentiometers, resistors and capacitors. 

A total of 20 faults can be switched on using switches located behind a cover.

Typical faults: interruptions, short-circuit, faulty components and faulty design.

Examples of exercises:

  • Fault-free dimmer
  • DIAC shorted
  • DIAC with high resistance
  • The gate of TRIAC works like a diode
  • Control circuit break
  • Assembly or component fault
  • Trimmer shorted
  • Auxiliary RC circuit not included
  • Variable resistance R shorted
  • TRIAC shorted