{"title":"Thermoelectric Generator (TEG) Module - SP1848-27145, 40 x 40mm","handle":"thermoelectric-generator-teg-module-sp1848-27145-40-x-40mm","url":"/products/thermoelectric-generator-teg-module-sp1848-27145-40-x-40mm","description":"Turn a temperature difference into electricity. Hold one side of this module against something warm, keep the other side cool, and it generates a usable voltage with no moving parts at all.\n\nIt is a tidy way to show energy conversion happening on the bench, and it is the same component behind real waste-heat harvesting, from wood stove fans to spacecraft power supplies.\n\nHow to use it\nThe face with the printed text is the cold side. The blank face is the hot side. Red lead is positive, black lead is negative.\n\nThe bigger the temperature difference across the module, the more you get out of it:\n\n\nTemperature differenceOpen-circuit voltageCurrent\n\n20°C0.97V225mA\n40°C1.8V368mA\n\n\n\nYou will want a heatsink on the hot side to keep that difference up. Without one, both faces drift towards the same temperature and the output falls away, which is a useful lesson in itself.\n\nSpecifications\n\nModel: SP1848-27145\nSize: 40 × 40 × 3.4mm\nLead length: approximately 300mm\nColour: white\nNo moving parts, long service life\n\n\nA note for teachers\nThis is a generator, not a cooler. A Peltier module (TEC) is the same physics run backwards: put power in, get a temperature difference out. This one is built for the other direction, which is what you want when the task is about harvesting energy rather than moving heat. If you need the cooling direction instead, look at our Peltier modules.","vendor":"Little Bird","product_type":"Thermoelectric Generator","in_stock":true,"options":[],"variants":[{"id":16573,"title":"Default Title","sku":"LB-HR0214-42A","mpn":"SP1848-27145","price":11.42,"on_sale":false,"in_stock":true,"available_quantity":200,"option1":"Default Title"}]}