e420.asv

学习Matlab循环语句的好例子

% Script file: E420.m

% Purpose:
%   This program is to calculate the iD through a semiconductor by the vD
% It asks us to create the plot between iD and vD,then execute it in
% different tempature 75,100,125F,the vD is from -1.0V:0.1:+0.6V

% Record of Revision
%    Date                 Programmer               Description of change
% ============         ===================       ========================
%    12/06/08             ZMW                      Original code

% Define variables:
% iD             -----the votage across the diode,in volts
% vD            -------the current flow through the diode ,in amps
% T             -------Temperature

% Constants
Io=2.0;
q=1.602e-19;
k=1.38e-23;
% ii=1;
% jj=1;
% kk=1;
% T1=75;
% T2=100;
% T3=125;
% for vD=-1.0:0.1:0.6
%     iD1(ii)=Io*(exp(q*vD./(k*T1))-1);
%     iD2(jj)=Io*(exp(q*vD./(k*T2))-1);
%     iD3(kk)=Io*(exp(q*vD./(k*T3))-1);
%     ii=ii+1;
%     jj=jj+1;
%     kk=kk+1;
% end 
% 
% vD=-1.0:0.1:0.6;
% hold on 
% plot(vD,iD1,'k-');
% plot(vD,iD2,'b-');
% plot(vD,iD3,'r-');
% hold off
ii=1;
jj=1;
for T=75:25:125
    for vD=-1.0:0.1:0.6
        iD(ii,jj)=Io*(exp(q*vD./(k*T))-1);
        jj=jj+1;
    end
    ii=ii+1;
    jj=1;
end
vD=-1:0.1:0.6;
plot(vD,iD(1,))