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ISO (Tango) output transformer wiring

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Joined 2015
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I have a pair of ISO FC-20S (should be similar to Tango XE-20S) and need some guidance on wiring.

For 300B, I would like to connect 5K:8.

For primary I need 8 & 10, for secondary 5 & 6.
This seems to be self explanatory but I don't want to mistakes with $$$ iron.

Primary:
8(B): B+
10(P): Plate

Secondary:
5: v+
6: v-

Link to datasheet

Thanks!
 

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