Considering a practical transformer,(adsbygoogle = window.adsbygoogle || []).push({});

We can get a given voltage and corresponding current ratio by selecting a particular turns ratio.

ie. V1/V2=N1/N2=i2/i1

Say that I want to make a 240V/60V.

Now 240/60 volts ratio can be acheived by considering different no. of turns on primary(P) and secondary(S).

like:

1)P=4 turns ,S=1 turn

2)P=24 turns,S=6 turns

3)P=120 turns ,S=30 turns

4)P=240 turns,S=60 turns

5)P=4800 turns S=1200 turns

So we have various options for a given voltage ratio.So will each of the above turns ratio work?

Then why do we have 230-60V / or 230-12V transformers so bulky.How does current rating affect no. of turns?

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# Deciding no of turns on primary and secondary of tranformer given a voltage ratio?

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