I am building a cooling application with a Peltier. I expect the Peltier to not be on the full time, but do not want it to generate electricity when it is not on and there is a temperature differential between the two sides. Would a diode across the Peltier as illustrated in the image below allow it to function as normal when 12v is applied to the + side and when it is turned off any energy generated by the Peltier will feed back into itself? My hope is this should at least slow down the heat transfer process from the thing it was cooling to the outside world? I am also interested/worried about how this reverse in flow direction will affect the circuitry of my system, and wondered if this would help protect against that. Thanking you in advance.