pwm problem

[nuwan5213]

Dear all,

im trying to control DC motor with PWM control via ADC.
the problem is Motor trouqe is very low.
but with extranal power supply it is ok.
im using 12 v for motor drive part with IRF 844 and PC 817 in between PIC and FET.

i think the problem is Frequency,
how can i adjust that in flowcode????im not good in "C"
please help.i want to change the frquency .!

[medelec35]

Hi nuwan5213,
So long as you microcontroller supports it, Flowcode has a built in PWM component that is very easy to control without using any C
Take a look at:
http://www.matrixmultimedia.com/mmforum ... 36&#p21535
I have explained how to use PWM component.

You should be able find an example flowchart that has PWM in the learning center:
http://www.matrixmultimedia.com/lc_index.php?p=18

Make sure your flowcode is up to date/ Latest V4 is v4.5.18.74

If you create a flowchart and would like us to check it's ok we can do that for you.

Hope this helps

Martin

[nuwan5213]

dear martin,

thanks.
problem is over.........................