Hello, I'm brand new to this site and not very cluey with electronics and wanted to ask a question. I am trying to build a circuit that, when 24Vac is applied and held, a 12Vdc pulse of .5 of second is sent to the output on 2 terminals. Then when the 24 Vac is released, a second 12Vdc pulse of .5 of a second is sent to the output terminals but in reverse polarity.
If anyone understands irrigation coils, a standard mains powered irrigation controller puts out 24 Vac to the solenoid coils while a battery operated controller puts out a latching 12 Vdc to latching solenoids. I want to build a circuit that can go in between the standard mains powered controller to operate latching solenoids. Many thanks in advance.