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Noise with Atmega8l circuit

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saeed1980

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Hi,

I have a circuit for control an AC Motor with relays. but Noise in this circuit sometimes cause to do wrong subrutine in microcontroller. How can I get rid of Noice.

I installed capacitors before and after 7805.
 

Does your relay coils have free wheeling diodes? This may also cause mall functioning

Your Schematic will help us to help you

Nandhu
 

Thank you for your answer.

Yes I used 1N4148 for this issue.is it ok or should i use 1N4007?

I draw a simple schematic in Paint, (sorry, I know it is funny). Please find attachment.
 

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