@build_1971 - you are right, I should have looked at the outputs available current. Thankfully I didn't fry it before looking at your comment and then back at the last line of @jremington's comment.
@Johnerrington.
Thank you for all the advice. This is probably going to turn into a novel so I apologize in advance. The TLDR is I am trying to drive a differential op amp circuit to step up my sin wave to +-10-13V, then drive a push pull mosfet circuit, that then drives a step up transformer (10:1 turns ratio, 40VA). All of this so I can play around with 40-70hz sine waves and do basic relay voltage/frequency testing without having to borrow a doble test set.
Background: I work in the power sector doing protective relay engineering. It has been over a decade since I have gotten to play around with my arduino, and even longer since I have done op amp circuits or filter circuits or any micro electronic design for that matter. I was cleaning out my house one day and saw my Arduino which gave me the idea to try to make a single or three phase inverter to do some voltage testing on a few relays. It would allow me to do some basic testing at home which would be convenient. Then I thought about the code for the arduino and I was fantasizing that I might even be able to build custom voltage waveforms to match some common fault conditions. Usually you have to use a large expensive test set to do this (which I understand, there is a reason it is large and expensive, but still, why not try right?). Also, I say voltage because I couldn't even begin to conceptualize how I would drive high current wave forms so I was just focusing on the relay's high impedance voltage inputs. I gave up on this idea after the first day because all of my searches were bringing up incomplete push pull circuits that magically transformed a nonmanipulated square wave into a working sine wave and I couldn't make any of them work, but it still bugged me at night and I kept thinking about it. I finally got to the point where I was running a 60hz square wave out of my pwm into an op amp circuit (because I had a few ua741's from college that I still had around). I used the op amp to get my +/- outputs by setting it up in a differential configuration. Then from there, I ran it through a push pull mosfet set up and then to a 10:1 transformer to get 70-110VAC on the high side. Of course, this looked like a very poor sin wave. So then I started looking into properly modeling a sin wave with a pwm pin, and after reading a bunch of posts on here, I got to the point where I am now. I can finally get a decent waveform on the lowside, but it is missing a lot. I am thankful that I posted though because every comment on here has been very helpful and given me really good direction on where to go next. I don't want to keep wasting your time, but I definitely appreciate all the input and any continued input from you guys.