>Now I understand, sorry. I will just do an educated guess here:
> ...
Thanks. This may or not be the correct explanation, but in any case your explanation makes much more sense than the "demagnetization" story.
Oh, and about the power - well, the situation sure has improved, compared to 10-20 years ago, but I suspect our power is not yet as clean as it might be.
Hilmar.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)