Hi how do i plot a halfwave rectifier signal in matlab? i tried the coding below and only got the fullwave

>> f=50

f =

50

>> T=//f

T=//f

|

Error: Unexpected MATLAB operator.

>> T=1/f

T =

0.0200

>> l=linespace(0,10,100);

Undefined function or variable 'linespace'.

Did you mean:

>> l=linspace(0,10,100);

>> t=1:100;

>> sig=sin(2*pi*f*l*(t));

Error using *

Inner matrix dimensions must agree.

>> sig=sin(2*pi*f*l(t));

>> plot(t,sig);

Answer 1

[Star Strider]

To rectify it, use logical indexing to eliminate the parts of the signal that are less than 0:

f=50;
t=linspace(0,30,500);
sig=sin(2*pi*f*t);
rect_sig = sig > 0;                                 % Half-Wave Rectification

figure
plot(t(rect_sig), sig(rect_sig));

For full-wave rectification, use the abs() function.

[zahrah S]

what actually linspace(0,30,500) means?

[Star Strider]

It creates a vector starting at 0 and ending at 30 with 500 elements.

[zahrah S]

Thank you so much

[Star Strider]

As always, my pleasure!

See the documentation on linspace for details.

Answer 2

[Gerardo Antonio López Partida]

clc

clear all

close all

T=2*pi;%here you can change de period

t=0:T/1000:T;

f_t=sin(t).*(square(t,50));

plot(t,f_t,'r','linewidth',3);grid on;