Report Transformer data in Datasheet/Parts requests Posted July 31, 2012 Hi, I have an image of the transformer and I need to understand the data written on it. It seems to have three secondary windings. Here is the photo:What does this S1+S2=15V? Is the 15V shared between these two windings or is it the voltage rating for an individual winding? Is it same for the current rating as well?Thanks.