Hey everyone! I'm looking for general ideas on how to take advantages of high EM-fields created in for example , lets say, a transformer to energize a small sensor. I am not looking for specific ideas like placement, voltages etc. The reason for me asking is that this probably will be the topic of my master thesis, I'm heading for an interview on Wednesday and I want to would like to be as prepared as possible as I can because I know the guy will ask about how it can be done and which one would be the best fit for this project, or maybe try all the methods to see which one is the best suited for different situations. So help me out guys, your help is much appreciated!