What is VA rating Available at secondary side of the Transformer?

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Respected All,

What is VA rating Available at secondary side of the center tap Transformer?
 

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This WAS a simple academic question.

If a center tapped secondary outputs 12Vrms at 5A into resistive load

then what does the split pole (Pole to center tap) output in power

6Vrms*5A = ?
 

Respected Sir,
It is 6*5=30 watts(VA) but can i with draw 10 Ampere ( 6V*10A=60 amps) because i am Loading Only 6V. Then I can efficiently use the transformer. Other Wise my efficiency is 50% when it is 6V*5A.
 

Hi,

There are transformers with 4 secondary side connections, then you may parallel connect both secondary windings to get 6V, 10A.

But it seems you have 3 connections only, then this is not possible. Then use one winding only, with 6V, 5A.

But efficiency is not 50%. Efficiency = P_out / P_in, which will be more than 85%.

Klaus
 

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