Quiz Board Creation ~ Help Wanted

Are you going to hook this up to 220V?

YES I'M GONNA USE 220V. I CAN ONLY GET 2 CONTACTORS CANCELING EACH OTHER OUT BY USING THE NORMALLY CLOSE TO BYPASS THE NEUTRAL OF THE ONE AND THE LIVE OF THE OTHER. I'M SURE THERE IS A WAY.

Maybe that's why they call this game "Jeopardy"!

I think I found a way to do it if the relays each had one NO and two NC contacts; haven't yet been able to get it down to one NC.

ok thanx a lot.

I'm sure there are people out there who are better versed in discreet mathematics than I and while there is some "minimum" number of contacts required, the minimum isn't always the best idea. The wisdom I was taught was to have separate contacts for each logic statement you wish to make.

In this case

1. If button one is pressed and (not 2 or not 3 or not 4) then light the bulb.

2. If button two is pressed....

Therefore, I would use the relay that has at least one NO and at least 3 NC contacts.

Again, there may be a more elegant solution, but this was the "rules to live by" I was taught.