A silly question but the more it spins in my mind the more I get confused.

Got a burnt out US low voltage transformer.

My mind says to halve the turns when I rewind its secondary on a similar sized 240V transformer, is this correct?

Thanks from David

 

A silly question but the more it spins in my mind the more I get confused.

Got a burnt out US low voltage transformer.

My mind says to halve the turns when I rewind its secondary on a similar sized 240V transformer, is this correct?

Thanks from David

May be and may be not.

Have u got any idea on transformer turns ratio formula

 

Sadly no, maths was never a strong point.

 

Yes. The primary is sized to utilize the (iron) magnetic circuit to its best advantage. The secondary is very negotiable. You can pretty much choose whatever volts you want as long as you do not exceede the wattage (VA) available from the magnetic circuit.

 

The supply it was in claimed 6v @ 200mA and was smaller than a 500mA transformer I have, I am waiting for a 300mA type to come which should be nearer its VA factor.
This one should also be similar in style to my faulty one, a cheap made mass produced Chinese style type, almost bare laminations with no clamp and a few layers of tape over its windings.

 

There is a few things about it the formulas for it.