Frr- I do not know what "PID+VID" is. Jstola- My fault. I'm use to hearing it referred to as an Android port/jack. Kyle B- It was at a shopping center with multiple stores. JRE- I used a feature on my phone, "Bixby" to snap a picture of the device and it searches the internet for similar images. After looking through the results I stumbled across debugging interfaces. This device matches some of their characteristics, and was the closest match to any results I found with or without using Bixby. Ocrdu- I also found Jtags and after looking into them slightly, I was left with the same question

@Bruce Abbott - That is a very interesting article. I wonder why MOTs act that way, but regardless, I guess adding more windings on the primary might be the way to go

Yes it is 120v 60hz transformer which is being used in America (120v 60hz outlet). And yes you are spot on, I ground off the welds to separate the top and bottom. The laminations were pretty well held together and I never separated them. To rejoin the top and bottom however I placed them in a bench vise after applying some superglue. Not sure if that was the best idea or not. I was just trying to keep as many pieces isolated as possible because of the little bit I have learned about Eddy currents.

Well I picked up a cheap clamp meter today for the purpose of reading amps on this transformer and I know clamp meters in general aren't the Most accurate tools. Costing less than $15 probably doesnt help its accuracy either. But being that the power cord gets pretty warm as well, (the original power cord from the microwave) I feel 10 amps is accurate