欧姆定律通过电子电路来实现便是一种受控的有源电阻,或称之为电子负载。这种电子电路除能正确体现欧姆定律的数学关系外,还具有材质电阻所不具备的特性,因此它有广泛的实用价值。本文将阐述受控有源电阻的基本原理、实现方法及其应用。 Ohm’s law through the realization of electronic circuits is a controlled active resistance, or call it an electronic load. This electronic circuit can not only correctly reflect the mathematical relationship of Ohm’s law, but also has the characteristics that material resistance does not have, so it has a wide range of practical value. This article describes the basic principles of controlled active resistance, implementation methods and their applications.