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Sender: "piclist-bounces@mit.edu" Date: Tue, 26 May 2020 10:24:03 -0700 Subject: [EE] Placement of LED resistor Thread-Topic: [EE] Placement of LED resistor Thread-Index: AdYzgmeKzUlHfqu8S/uYODFNBTxQNw== Message-ID: List-Help: List-Subscribe: , List-Unsubscribe: , Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US Content-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: acceptlanguage: en-US received-spf: Pass (protection.outlook.com: domain of sas.com designates 40.107.93.64 as permitted sender) receiver=protection.outlook.com; client-ip=40.107.93.64; helo=NAM10-DM6-obe.outbound.protection.outlook.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sas.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=jTJhA/aO7ANUlxSiSb6TEQBq2uPFQIp2yx2Ue3dNTIg=; b=PffrBNlGVuySUbD5biSmumM2AAH/zbCQU8kitnLcxchJjaPWpshXDYJdP6q+rSTSE7GsRU8vHB5WfKMwg7JGzSGu1GigudJIn8JtZqf0X41mr2CPDdqVguQufAAjMFgfPLI/zTFrd9KukLGtfvFeT3jZHVnKg9zreqYqb82UXKU= authentication-results: spf=pass (sender IP is 40.107.93.64) smtp.mailfrom=sas.com; MIT.EDU; dkim=pass (signature was verified) header.d=sas.com;MIT.EDU; dmarc=bestguesspass action=none header.from=sas.com;compauth=pass reason=109 x-originating-ip: [85.156.110.64] errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-topics: [EE] x-content-filtered-by: Mailman/MimeDel 2.1.6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Hello, In what circumstances does it matter if a current resisting LED resistor is= attached between positive source to LED anode or from LED cathode to groun= d? Thanks very much! Kind regards, Lindy --=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 .