>modulating the current to follow the mains voltage and should generally have no problem with DC input I'm particularily worried about confusing that following

>modulating the current to follow the mains voltage and should generally have no problem with DC input I'm particularily worried about confusing that following/regulating circuity. If the 50/60Hz it senses are caused by screen refresh feeding back somehow, it might end up behaving "weird". But I guess I'll just try, and hope it won't break anything.