Need Advice
Posted on July 3, 2011
Got a really nice power transformer but have no clue how to set the primary side for 115VAC. Here’s what I mean.
Got a really nice power transformer but have no clue how to set the primary side for 115VAC. Here’s what I mean.
The primary is capable of 115 or 230 VAC. The primary side has four solder terminals with two separate windings that are not connected together.
The box the transformer came in shows only one primary winding and a picture of a totally different transformer, so it’s no help. The website at Jameco.com at least has a correct picture of the two side-by-side primary windings, but the next line says “No data sheet available.”
I have thought of two possibilities. Either I only need to drive one of the windings with 115 VAC, or the two windings need to be wired in parallel for 115 VAC.
The secondary will be 12.6 VAC when it’s working correctly.
Just hooking it up probably won’t hurt it, but I’d rather get good advice.
