Abstract
Energy harvesting is widely used for the operation of wireless sensor nodes. Most of the energy harvesters gen- erated voltage levels are sinusoidal or random in nature, moreover, the output voltage levels these produce are in low (in mV range). For sensor operation, in order to convert this low AC voltage levels into relatively high DC voltage DC, a three stage Cockcroft Walton converter is developed. The paper presents fabrication and characteri- zation of a 3 stage Low Voltage Cockcroft-Walton converter in an area of 5.5 x 3.3 cm 2 . The converter was capable of converting a minimum AC voltage amplitude of 10 mV with a transformation factor of 6.5. The variation in the input frequency had almost no effect on the DC output voltage of the converter. Upon integration of the converter to different energy harvesters, the converter successfully rectified the AC or random output voltage signals of the harvesters into corresponding DC voltage.
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