next up previous contents index

[ENGN2211 Home]

Voltage Follower

  A circuit diagram of an opamp in a voltage follower configuration is shown in Figure 14.


  
Figure 14: Voltage follower.
\begin{figure}
\begin{center}
\epsfig{file=images/opampimg2.eps}\end{center}\end{figure}

This is a special case of the noninverting amplifier, with $R_1=\infty$ and R2=0, which means that (12) gives

 
vout = vin (13)



ANU Engineering - ENGN2211