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Re: [AVR-Chat] Relay to 3-phase contactor: Spark and Noise

2006-10-16 by Dennis Clark

???

You should not even have that relay powered from your logic supply, put 
that relay on another power rail and (of course) control it with a 
transistor.

DLC

behrooz_hariri wrote:
> The final contactor wich start/stop 3-phase motor and is connected to
> a 5 volts relay on my AVR circuit board, cause spark and this has
> negative effect on both AVR and specially LCD.
> 
> Is there a circuit to diminish these electrical shocks? 
> 
> Thanks
> Behrooz Hariri
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
> 


-- 
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* Dennis Clark  dlc@frii.com http://www.techtoystoday.com             *
* "Programming and Customizing the OOPic Microcontroller" Mcgraw-Hill *
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