Hi, i have built an induction heating circuit and i am trying to measure the current that goes into the step down transformer. After the transformer is the series LC circuit. I have 3 current transformers, one built by me and two built by factory. After the current transformer i have rectifying circuit, and after that i have an opamp, next will be the atmega controller to measure the current...
Now i have the following problem, at the beginning and end of the dead time, i have some oscillations spikes. Since the oscillations are not that big the rectifier circuit and the opamp are not affected, but the current measurement will suffer. I am thinking of taking 2-3 measurements and make the mean. All 3 CT have same oscilations in the output.
What is generating the spikes and how can i remove them (even after rectification if else is not possible or the opamp)?
Thank you.