Patent ID: 6748747
Filing Date: 2004-06-15
Classification: F25B,H01L

Abstract:
A method for temperature regulation of a Peltier element, the method comprising the steps of:regulating the temperature of the Peltier element in a first operating range only by heating, wherein a drive DC voltage is applied to the Peltier element, with a level of the drive DC voltage being regulated in a first control loop down to a minimum value; regulating the temperature of the Peltier element in a second operating range by alternating heating and cooling, wherein a low drive AC voltage is applied to the Peltier element, with a duty ratio of the low drive AC voltage, and thus a ratio of associated cooling to heating sections, being varied in a second control loop; and regulating the temperature of the Peltier element in a third operating range only by cooling, wherein a reverse drive DC voltage is applied to the Peltier element, with a level of the reverse drive DC voltage being regulated in the first control loop down to a minimum value.