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NJK-5002E NJK-1102O霍尔接近开关
当一块通有电流的金属或半导体薄片垂直地放在磁场中时,薄片的两端就会产生电位差,这种现象就称为霍尔效应。两端有的电位差值称为霍尔电势U,其表达式为U=K&miot;I&miot;B/ 其中K为霍尔系数,I为薄片中通过的电流,B为外加磁场(洛伦慈力Lorrentz)的磁感应强度 ...
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