input capture

ELMAY
Posts: 14
Joined: Wed Feb 09, 2011 2:45 pm

input capture

Postby ELMAY » 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?


ELMAY

LubinKerhuel
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Posts: 616
Joined: Wed Mar 07, 2007 11:23 pm
Location: Marseille - France
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Re: input capture

Postby LubinKerhuel » Sat Apr 09, 2011 6:47 pm

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.

Lubin

ELMAY
Posts: 14
Joined: Wed Feb 09, 2011 2:45 pm

Re: input capture

Postby ELMAY » 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?

thanks

Elmay


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