{"product_id":"united-scientific®-hall-effect-apparatus","title":"United Scientific® Hall Effect Apparatus","description":"The Hall Effect is the generation of a side-to-side voltage in a conductor or semiconductor carrying a current when it is placed in a magnetic field. The effect is widely used in magnetic field sensors. It is associated with several well-known systematic errors, some of which can be eliminated by special measurement techniques.\n\nThis Hall Effect Apparatus consists of a mounted n-type semiconductor chip on a traverse mechanism, a pair of coils, relay-controlled reversing switches, and a control unit with connecting cords.\n\nFeatures:\n• n-type GaAs Hall sensor chip\n• Helmholtz coil pair 75mm effective diameter, 11.25mT central magnetic induction at 0.5A\n• Two-axis mechanical traverse for field plotting\n• Constant current sources for magnet (0-0.5A) and Hall driving current (0—3mA)\n• Reversing switch for exploring the elimination of systematic error\n• 3-1\/2 digit current and voltage meters\n• Metal storage case for the Hall Effect board","brand":"United Scientific Supplies","offers":[{"title":"Default Title","offer_id":49962347331861,"sku":"USSHLEF01","price":2389.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/HLEF01_20Hall_20Effect_20Apparatus.jpg?v=1781072859","url":"https:\/\/unitedsupplycorp.com\/products\/united-scientific%c2%ae-hall-effect-apparatus","provider":"United Supply Corp.","version":"1.0","type":"link"}