滑动变阻器是实验室常用的电学仪器,具有很强的电路构造能力,无论是电学教学实验设计还是实用电路应用,使用得法能产生一些意想不到的效果;除了常规用法——改变电阻以外,结合工作实际略谈几项创造性特例以飨读者。 Sliding rheostat is commonly used in laboratory electrical equipment, has a strong circuit construction ability, whether it is electrical teaching experiment design or practical circuit applications, the use of law can produce some unexpected results; In addition to the conventional usage - to change the resistance outside, the combination of work Really talk about several creative special cases to readers.