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Problem with 5V dips caused by walkie-talkies in transmit mode

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saurav_sdpl

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If i use two walkie-talkie in transmit mode at the same time and see its impact on my pcb , i observe that my input supply 5V dips , why this is so???
and how to solve this [problem, because when i supply dips micro-controller gets reset for that time.

regards
 

Re: walkie-talkie

It looks like RFI problem.
 

Re: walkie-talkie

Try putting more bypass capacitors across your power lines. Spread them out.
 

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