ok i know its a step-up transformer that i pulled from an electric mouse trap for the life of me i can't figure out how the bloody heck they get the thing to step up or work at all I've dissected a couple and it would appear to be a layered step-up transformer the blue and black are the primary and the red is the secondary however there's no other end to the secondary it just ends under the tape i can't remember if it does attach to one of the primary leads or not it must because i can't seem to find anything on these things at all i assume its a pulse transformer since its for killing mice i cant seem to get it to work I've tried on many of these things to no avail any light on these things would be appreciated would like to make an ozone generator or jacobs ladder with it since I've been carrying them around for a while now