Transformer utilization factor

The transformer utilization factor (TUF) of a rectifier circuit is defined as the ratio of the DC power available at the load resistor to the AC rating of the secondary coil of a transformer.

$T.U.F=\frac{P_{odc}}{VAratingoftransformer}$

The $VA$ rating of the transformer can be defined as: $VA=V_{r.m.s}{\dot{I}}_{r.m.s}(Forsecondarycoil.)$TRANSFORMER utilization factor for half wave rectifier is .287 or .3.

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