PELTIER ELEMENT CONTROL CIRCUIT FOR HOUSEHOLD APPLIANCES

摘要

The present invention relates to a control circuit (1), suitable for use in household appliances, comprising a passive harmonic filter (2) connected to the live wire at the AC mains voltage inlet and that decreases the amplitude of the high-value peak currents to make them close to the sine wave form of the AC mains voltage, a rectifier (3) that converts the AC mains voltage into DC voltage by rectifying, a Peltier unit (4) having one or more than one Peltier element (P) operated by the rectified voltage, a capacitor (5) connected in parallel with the Peltier unit (4), feeding the Peltier unit (4) by being charged and discharged with the rectified voltage and a microcontroller (6) that provides the Peltier unit (4) to be operated with the desired Peltier voltage (Vp) and Peltier current (Ip) by monitoring the AC mains voltage.