What was already said was accurate. Most EM games are going to need a lamp with a capacitor built in to prevent this issue. Also, you could TECHNICALLY stick a full bridge rectifier in there to provide DC output to the GI, but I'll be honest...I have no idea if that would need some additional rewiring of the GI circuit or not. =P

I use UV LEDs in my Gottlieb Crescendo to accentuate the custom blacklight-reactive paints and rubber we used when we repainted the playfield...very little strobing at all. =\