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Sender: "piclist-bounces@mit.edu" Date: Tue, 8 Dec 2020 14:55:03 -0800 Subject: Re: [EE] Eliminating external noise through PS Thread-Topic: [EE] Eliminating external noise through PS Thread-Index: AQHWzYzTrXPj0C5e0UqoAGb3aBHSmKntrDOAgAAi0SE= Message-ID: References: <5FCFC00E.8040703@narwani.org>, <20201208204941.GE27145@laptop.org> List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: <20201208204941.GE27145@laptop.org> Reply-To: Microcontroller discussion list - Public. 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Twist the AC pairs if you can, run a ground track between those and the low= voltage stuff.. ________________________________ From: piclist-bounces@mit.edu on behalf of James = Cameron Sent: Tuesday, December 8, 2020 1:49 PM To: Microcontroller discussion list - Public. Subject: Re: [EE] Eliminating external noise through PS The AC path is adjacent and parallel to the 3.3V bus; the motor current will be coupled into that bus to some extent. I would carry the 5V closer to the microcontroller and add another linear 3.3V regulator there. That way everything else that happens on the 3.3V bus won't intrude so easily. -- James Cameron http://quozl.netrek.org/ -- http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .