ReRibbon said:I came across this old telegraph switchboard transformer at a yard sale. It has no markings or patent numbers.
Surely there could be an audio application for it. Any thoughts?
Seems to me like a 600:600 repeater with a center-tapped; the center-tap was used for creating a third "phantom" connection out of two balanced lines, allowing three links with two balanced lines.ReRibbon said:The side with two lugs reads 44.4 ohms.
The side with three lugs reads outside left to center lug 24.3 ohms.
The same is read for the outside right side and center lugs.
The outside two lugs measured together reads 42.6 ohms.
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