I have a circuit that needs to be able to withstand some bad mains power supplies and keep on working. I would like to test it without spending $$$ on EMC testing. Any ideas on creating the world's worst power supply?
I am talking lots of noise and nasty spikes here.
I can maybe use a series transformer and couple noise into the supply that way, or I can connect it together with an arc welder and arc away.
Any other (better) ideas?