Need help in understanding an old Circuit Board (PCB)

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Kasim2521

Joined Nov 6, 2021
1
Hi all,

Thanks for reading this post. I am working on an old PCB. It's called a "Transductor Isolator". As the name suggests it might be doing some sort of isolation. But, I am unable to understand how it actually works.

I have attached its schematic diagram. Parts with labels A,B,C & E are coils/inductors. And the coils with the same name i.e. A1.......A5 and vice versa belong to the same component as shown in the second figure. So, four such components are there.

A1......A4 and vice versa are may be serving as primary coils and coils (A5, B5, C5 & E5) are serving as secondary coils from where we are taking output.
 

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