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PSL60 - Experiment

THYRISTOR AND DIODE CONVERTERS

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A versatile teaching aid to investigate the principles and applications of thyristors diodes and converters.

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THYRISTOR AND DIODE CONVERTERS

The Thyristor and Diode Trainer is a versatile teaching aid. It explores the principles and applications of thyristors, diodes and converters. 

The control panel has clear mimic diagrams with shrouded sockets. Students use shrouded leads (included) to connect the different parts of the circuits. The parts include thyristors, diodes, inductors, transformers and smoothing capacitors. A mix of standard analogue meters and a multi-function digital meter measure the currents and voltages in the circuits. 

The multi-tapped transformers give a choice of single and three-phase AC voltages for connection to the diodes and thyristors. A centre-tapped interphase transformer shows the effect of reducing circulating currents in rectifier circuits. A load inductor shows the effect of inductance when smoothing the AC ripple in rectifier circuits. Fast-blow fuses on the control panel protect the load side of experiment circuits. Students use controls on the lower panel to adjust AC supply voltage and ballast resistance during experiments. 

For thyristor experiments, students can select an external or internal source to trigger the gates of the thyristors. A variable control delays the gate firing pulse for clear demonstrations of the effect of firing delay on harmonics and output wave-forms. Transducers allow students to connect an oscilloscope (included) to show and compare the gate pulses with the output wave-forms. 

TecQuipment supply this product with three load banks: two resistive (PSA50) and one inductive (PSA60). It also includes a two-channel oscilloscope (OS2).

  • Single-phase and polyphase diode rectifier circuits
  • Single and three-phase fully controlled thyristor bridge circuits
  • Single-phase AC control using thyristors
  • Rectifier harmonics, output smoothing methods and inverted operation
  • Commutation effects in polyphase and single-phase rectifiers

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