Help to identify this transformer (Algemeen)

door edison , Aveiro - PORTUGAL, 31.03.2020, 23:31 (1698 dagen geleden) @ gertjanrhe

Hi.
Many thanks, to both, for the answers.

I put 10 volts in the the winding of lower resistance and got the following results.

Can you help me to calculate the ratio.

Many thanks.
Vriendelijke groeten,

Carlos

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From PORTUGAL, with regards
Carlos