I know that ALOT of modern appliances use a micro controller and switching power supplies for efficiency and control.
I recently bought a Mr. Induction 1300watt portable induction cooktop and found a VERY poorly designed input filter.
I reverse engineered the unit because I was measuring a standby power consumption of 25WATTS!!!! Hardly "green"!
What I found was two 10uF caps across the incoming line!!! YES that is NOT a typo!! 20 MICROFARADS total cap. across the line!!1 NOT two .01uF but 10 uF!!!!!
Along with being a big signal sucker, I didn't feel like paying for the 25 watts of continuous consumption, so I removed the caps... NOW 0 (zero) watts in standby!
I called the company about the 25 watts, and a chinese lady just giggled and said to unplug it! WOW is that POOR or what?!?!?!?
Anyway, just wanted to pass this finding on to anyone that might have this particular brand... don't know if other brands are the same or similar.