diff --git a/opamp_circuits_C_GARRETT/circuit1_dag.dia b/opamp_circuits_C_GARRETT/circuit1_dag.dia
new file mode 100644
index 0000000..60c5e12
Binary files /dev/null and b/opamp_circuits_C_GARRETT/circuit1_dag.dia differ
diff --git a/opamp_circuits_C_GARRETT/opamps.tex b/opamp_circuits_C_GARRETT/opamps.tex
index f7fdd30..1259312 100644
--- a/opamp_circuits_C_GARRETT/opamps.tex
+++ b/opamp_circuits_C_GARRETT/opamps.tex
@@ -159,9 +159,9 @@ two derived components of the type $NI\_AMP$.
 \hline
 \hline
  TC1: $NI\_AMP1$ AMPHigh        &  opamp 2 driven high          &      & DiffAMPLow \\ 
- TC2: $NI\_AMP1$  AMPLow        &  opamp 2 fdriven low          &      &  DiffAMPHIGH \\  
+ TC2: $NI\_AMP1$  AMPLow        &  opamp 2 fdriven low          &      &  DiffAMPHigh \\  
  TC3: $NI\_AMP1$ LowPass        &  opamp 2 driven with lag      &      &  DiffAMP\_LP \\  \hline 
- TC4: $NI\_AMP2$ AMPHigh        &  dual amplifier high           &      &   DiffAMPHIGH \\  
+ TC4: $NI\_AMP2$ AMPHigh        &  dual amplifier high           &      &   DiffAMPHigh\\  
  TC5: $NI\_AMP2$ AMPLow         &  dual amplifier low              &      &  DiffAMPLow \\  
  TC6: $NI\_AMP2$ LowPass        &  dual amplifier lag/lowpass        &      &  DiffAMP\_LP \\ \hline 
  %TC7: $R_2$ OPEN     &  LOW       &      &  LowPD \\ \hline
@@ -172,12 +172,12 @@ two derived components of the type $NI\_AMP$.
 
 
 
-Collecting the symptoms, we can determine the failure modes for this circuit, $\{DiffAMPLow, DiffAMPHIGH,  DiffAMP\_LP\}$.
+Collecting the symptoms, we can determine the failure modes for this circuit, $\{DiffAMPLow, DiffAMPHigh,  DiffAMP\_LP\}$.
 
 
 We now create a derived component to represent the circuit in figure~\ref{fig:circuit1}.
 
-$$ fm (DiffAMP) = \{DiffAMPLow, DiffAMPHIGH,  DiffAMP\_LP\} $$
+$$ fm (DiffAMP) = \{DiffAMPLow, DiffAMPHigh,  DiffAMP\_LP\} $$
 
 
 Its interesting here to note that we can draw a directed graph