It’s not difficult to drive an LED indicator from the AC line, but it requires many active and passive components. It also poses safety challenges. EDN and Planet Analog blogger Bill Schweber explains ...
And in a time when neon is becoming rare to find, Kelleher said it’s in good hands. “He's worked on the Citgo sign, the Paramount Theater sign in Boston," Kelleher said speaking of Waller. "And, today ...