> On 05 May 2018 at 17:25 "Dale H. Cook" <[email protected]> wrote: > > > At 09:48 AM 5/5/2018, Mike Wilson wrote: > > >How are you protecting the operator from (at least) a nasty burn on the > >thumb? > > Mike - > > The electronics is in a 2-gang plastic electrical box at the top of the (~ 3 > foot) pole under the reflector. A triac trigger has been added to the > electronics in the box. The operator is holding the bottom of the pole and is > pushing a button carrying 5 volts DC. > > Remember where I have spent my career. I am used to having to try to make > things idiot-proof, or as we say in radio engineering, "DJ-proof."
I guessed you wouldn't be running a couple of hundred volts down a wire. I'm used to having to idiot-proof stuff against both students and lecturers. Lecturers are more gung-ho and students more inventive. Keeps me on my toes. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
