% /home/dimarzio/Documents/working/12229/bridge.m
% Tue Sep 19 21:56:17 2017
R1=1e4;R2=R1;Rm=5000;Vs=10;Rx=1161;
Rvlist=[1100:10:1200];
for count=1:length(Rvlist);
Rv=Rvlist(count);
M=[1/R1+1/Rm+1/R2,-1/Rm;-1/Rm,1/Rx+1/Rm+1/Rv];
y=[Vs/R1,Vs/Rx]';
x=inv(M)*y;
dv(count)=x(1)-x(2);
end;
figure;plot(Rvlist,dv,'b');
xlabel('Rv, Variable Resistor');
ylabel('dV, Difference Voltage, V');
hold on;
moose=axis;
plot(Rx*[1,1],moose(3:4),'r');grid on;

Published with MATLAB® R2017a