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input capture

Posted: Fri Apr 08, 2011 1:06 pm
Hi Lubin!

Do you have any examples on how operate a 220V 50hz signal to detect the passage through zero in order to synchronize the PWM signals
i try with IC ''input capture" but no result

Can you help?


Re: input capture

Posted: Sat Apr 09, 2011 6:47 pm
by LubinKerhuel
Hi Elmay,

Is the problem to get an input on the 220V signal or to synchronize the PWM signal ?

Getting 220V signal should be done using an antenna for example.
About synchronizing PWM signals, you may change the PWM period.

I have no example about this specific problem.


Re: input capture

Posted: Tue Apr 12, 2011 1:21 pm
Hi Lubin,
I want to detect the passage by zero of use sinewave signal with input capture if you like it you can give me an example of use of any type IC and output of this block?