Transformer Rectifier Unit (TRU)
Transformer Rectifier Unit (TRU)
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25.Jun.2022
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SKYbrary Aviation Safety. (June 25, 2022). Transformer Rectifier Unit (TRU).
Retrieved June 3, 2026
from https://skybrary.aero/articles/transformer-rectifier-unit-tru
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TRU
Description
A Transformer Rectifier Unit (TRU) combines the functions of a Transformer and a Rectifier into one unit. In aircraft applications, the TRU converts the 120V AC power generated by the engine or APU generators or provided by a Ground Power Unit (GPU) to 28V DC power for use by various electrical components.
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