So I was dissecting a 700W ATX PSU, a very high end one, and found an unusual design feature. As you can see in the attachment, there are these unusual needle shaped solder points. These are across the windings of a common mode choke in the line filter, right before the bridge rectifier. I cannot fathom the purpose of this feature. I asked our consulting engineer with 25 years experience, and he has no idea either.
What's up with this?