>Certainly a brass headboard doesn't have a semiconductor in it. Are you sure? http://www.sparkbangbuzz.com/els/photocell-el.htm http://www.sparkbangbuzz.com/

>Certainly a brass headboard doesn't have a semiconductor in it. Are you sure? http://www.sparkbangbuzz.com/els/photocell-el.htm http://www.sparkbangbuzz.com/els/photocell-el.htm https://en.wikipedia.org/wiki/Metal_rectifier https://en.wikipedia.org/wiki/Metal_rectifier