Help to identify this transformer (Algemeen)

door gertjanrhe , Gooi, 01.04.2020, 22:48 (1697 dagen geleden) @ edison

The ratio of turns is identical to the ratio in voltages.
I.e. a voltage ratio 100V to 10V means a turns ratio of 10 to 1.
For the impedance transformation you have to calculate the square of the turns ratio.
I.e a turns ratio of ten means an impedance ratio of 100.
Given the ratios you measured I think it is right to say it is line transformer for 70/100V public address (PA) systems.

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De techniek was in de jaren 40 veel verder dan menigeen zich bewust is