Hi folks,
I am building a system that can heat/cool/maintain a certain water temperature. I have a 110vac automatic temperature controller, two 12vdc cooler/warmer units, and two ac to dc 12v converters one for each warmer/cooler unit.
When the warmer/cooler units are performing a heat operation the polarity of the wires going to the heat sync within the units are reversed. Since the switching operation is going to be controlled automatically by the temperature controller I want to install a relay between the warmer/cooler and the heat sync that activates when the temp controller switches to the warm function.
My problem is that I do not know which type of relay to use. The relay would need to be activated with 110vac and switch 12vdc on the load side. It would also have to reverse the polarity of the load wires. Any ideas oh which relay I could use for this operation?
I attached a quick schematic of the section of the project that I described. Any help would be greatly appreciated.
Thanks!
I am building a system that can heat/cool/maintain a certain water temperature. I have a 110vac automatic temperature controller, two 12vdc cooler/warmer units, and two ac to dc 12v converters one for each warmer/cooler unit.
When the warmer/cooler units are performing a heat operation the polarity of the wires going to the heat sync within the units are reversed. Since the switching operation is going to be controlled automatically by the temperature controller I want to install a relay between the warmer/cooler and the heat sync that activates when the temp controller switches to the warm function.
My problem is that I do not know which type of relay to use. The relay would need to be activated with 110vac and switch 12vdc on the load side. It would also have to reverse the polarity of the load wires. Any ideas oh which relay I could use for this operation?
I attached a quick schematic of the section of the project that I described. Any help would be greatly appreciated.
Thanks!