first of all, sorry about to be asking that silly and newby question, I know, it is really lame.
Is there a simple device, that I can build simply, or bought, that can switch between two lights ?
I had a lamp, that has two many lamps, (7, six in a circle, and one central), all parallel, all 220v. Too much light often unused. So I thought to split in two circuits, one with the central lamp, another with the six ones.
I know I could put a commutator after the wall switch, but I do not have place, neither wires, neither looks good.
So I would like that when I turn on (on the wall), either one or six lamps goes ON, as I turn off, all goes OFF, and as I turn ON again, the opposite lamps go ON.
I can imagine, with a small circuit to remember the state, a relay, a battery, a power supply 220V to 5V, etc...
But maybe there is some short of magic relay that each time it gets 220V, it switch output ?
Again, sorry if this is a lame question ;-)