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A rectifier is used to:
  • A
    change AC to DC.
  • B
    change DC to AC.
  • C
    decrease voltage.
  • D
    increase voltage.
Transformer Rectifier Units (TRU’s) consist of a unit that combines a transformer and a rectifier. Therefore, it converts Alternating Current (AC) into Direct Current (DC) whilst at the same time transforming a certain voltage into another. One problem appears after the rectification stage of this process as the output is fluctuating. This fluctuation makes the DC unusable for equipment use and it needs to be minimized. This is usually achieved by fitting a filter or smoothing circuit at the output of the rectifier. It is also required to maintain a constant DC supply at the exit of this filter, regardless of the load applied. Therefore, a sort of compensation needs to be fitted to overcome this problem and this solution is called stabilization.

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