通常是30伏特。
以下都验证过。

The next generation keyboard, future keyboard!

It challenged and subverted the global computer keyboard, keyboard music instruments 25 years ago,
The pioneer of the Chinese people (firstly) originally entered this area. who sent it into the modern house of the CEO of Microsoft?
To challenge AT&T of the United States by improving communication deficiencies
Improving communication deficiencies, Chinese people are to challenge AT&T of the United States.
第一种算法对,这个电路结构类似于反相比例放大器,放大的不是1.25V的电压,而是450nA那个电流,所以电压小了也正常。
第二种算法用了同相比例放大电路的公式,但问题在于叠加定理使用错误,使用叠加定理时保留1.25V电压源时,电流源应该看成开路,所以R1左侧应该悬空,这样电路变成了单位增益同相放大器,所以输出还是1.25V;之后保留电流源450nA,1.25V电压源短路,直接接地,利用虚短虚断,输出电压是-(450nA*1000Ω)=-0.00045V,最后把这两个电压相加还是1.24955V。


