I see a lot of people new and old often have a question or two about Alternating current related circuits and devices.
Most are good and honest questions too.
But there are a few posters here that have an uncontrolable compulsion to bring up HARMONICS at every chance they get.
WHAT THE F*CK?

yes, anything related to AC does and will produce a potential line noise of some sort. I know that. But do you really need to bring that up when a kid is asking about a 6 volt 1 amp ac power pack?
WHAT THE F*CK?

Do you need to see a doctor about OCD meds?
If he is trying to run a disruptive discharge circuit for a tesla coil right from the line source, then yes, its a valid point.
Use a little common sense and proper judgement for gods sake!
Why are some so ovewhelmingly concerned about every possible source of an electrical noise?
Did you have a electronics...