WHAT HAPPENING TO TRANSFORMER????
i have the step down transformer rating 230/12v, power
rating something.,,, ok. suppose iam giving 12v to secondary
side,what will happen on primary side.,,,

Answer Posted / r a m e s h

The design of transformer are rating in terms of insulation
of core & winding configurations
in 230v/12v transformer the primary winding(230v)
nearer to core & (12v)winding at outer layer
so it is not possible for to step up value to 12v to 230v

by input 230v ac in secondary site(12v)the winding
insulation burn up.
@Ramesh

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