Update Section2.md

Author: hakanmerdan

ADC/Part3/Section2.md

@@ -27,7 +27,7 @@ You should have a basic understanding of the operation of this circuit from the
 
 As you have seen in the lectures, operating the amplifier at the correct biasing point is important: we need to get a high gain, and we need to avoid saturation of the BJT.
 Our general aim therefore is to place the quiescent operating point (i.e. when $V_\text{in}$ is open circuit) such that $V_\mathrm{C} = V_\mathrm{CC}/2$.
-Using a single rail supply ($V_\text{CC}=5$V and connecting emitter node E to GND), we can bias the output of the amplifier at a quiescent voltage of about 2.5V.
+Using a single rail supply ($V_\text{CC}$=5V and connecting emitter node E to GND), we can bias the output of the amplifier at a quiescent voltage of about 2.5V.
 Thus 2.5V will be dropped across resistor $R_\text{C}$, so chose \$R_\text{C}$=10kΩ to get 0.25mA of quiescent collector bias current. 
 
 Given the values of $R_\text{B1}$ and $R_\text{B2}$, estimate an expected value for the potentiometer $R_\text{B3}$ to bias your CE amplifier around a quiescent output voltage of 2.5V.