Thermoelectric generator for a vehicle

The device has a thermo-generator (1) that can be thermally coupled to a heat source (2) and a regulator (5) for guaranteeing a defined output voltage from the thermo-generator. The regulator is designed to maintain the temperature behavior of the thermo-generator within a range that produces a defined output voltage. Independent claims are also included for the following: a motor vehicle with a thermoelectric current generator.