Feedback in the Emitter Follower

发射跟随器中的反馈

The emitter follower can be seen to be an example of negative feedback when the relationship

发射极跟随器可以被视为负反馈的一个例子，当其关系

is put in the form

被写成

which when compared to

当与...相比

shows that B=1. The gain with feedback is

表明 B=1。反馈增益为

The gain of 1 can be seen as a result of all the output being fed back to the input.

增益为1可以看作是所有输出都被反馈到输入的结果。

索引电子概念反馈概念

HyperPhysics ***** 电磁学

R Nave

Feedback in the Common Emitter

共射极放大器中的负反馈

The input/output relationships:

输入/输出关系：

can be combined in the form

可以以以下形式结合

which when compared to the form

当与形式进行比较时

gives

给出

The application of negative feedback in this case with the value of B shown leads to an amplification

在这种情况下应用负反馈，如图中所示的B值导致放大

which corresponds to the approximate voltage gain obtained by other approaches:

这对应于通过其他方法获得的近似电压增益：

索引电子概念反馈概念

HyperPhysics ***** 电磁学

R Nave