Help wanted in designing a switching circuit. Answered
I have 3 inkbird controllers monitoring 3 beer fermenters. When any of the fermenters require chilling the Inkbird switches 230v to a pump. Problem is that there is a combination of any one on at a time or all three at once or none on. I can’t connect all 3 outputs together to drive the pump as the inkbirds will get damaged. Can anybody draw me a circuit whereby if any combination of of inkbirds switch 230v only one output is switched to the pump. Have attached a diagram showing all outputs connected together but have been told that mains connected across the Inkbird output will probably damage it.