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Sender: "piclist-bounces@mit.edu" Date: Tue, 21 Apr 2020 18:24:54 -0700 Subject: Re: [EE] LDO reg keeps failing. Looking for suggestions. Thread-Topic: [EE] LDO reg keeps failing. Looking for suggestions. Thread-Index: AdYYRiTHQ1gSYzphR268UyLhcAcG4g== Message-ID: References: <35716fec-1512-6e55-8b3c-d4fe3e9b10aa@gmail.com> <64c9bf71-2cd6-f378-05e3-8f3375559e50@gmail.com> <20200421232604.GA28438@laptop.org> List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: <20200421232604.GA28438@laptop.org> Reply-To: Microcontroller discussion list - Public. Accept-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: received-spf: None (protection.outlook.com: burkartstudios.com does not designate permitted sender hosts) dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=burkartstudios-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=ndrZzxiXZPIjEzbQexZWt8db4zCuAa3gf8H/xm0w1L4=; b=j1ZPEaKCSjJUxJTr5GZBIjb6j0AOWdkKSsnA/EHMzqiNpU9t0TYz+OsXUv8dAs4Byi 6iCUB++tUa/+etXzI9Z5IGjiYCEpPsr9hNeLE1C1p+/erU8TFQP4oyLwBjzH54lqYKLm Gexy37Y/86GiqzjYU9w1pEoobL41s3ys14ncnDdOeQ/Zyf6USs6cHMMH2wDAxLyy4vxp G7SIKR/WQYj0nZmC6BhDgI1+x6wshDrvdh06zUMMdOd/Ng9G0xapVTWGzbPbr0slfSL/ n/2OSNFeIK6hzLY2ulQ1g3WjkpUnW2Sg31KNVD7FC+eHYZ0C+7QdWVnFHD36Z7p9OSyf uS2g== authentication-results: spf=none (sender IP is 209.85.167.43) smtp.mailfrom=burkartstudios.com; mit.edu; dkim=pass (signature was verified) header.d=burkartstudios-com.20150623.gappssmtp.com; mit.edu; dmarc=none action=none header.from=burkartstudios.com; 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-received: by 2002:a05:6512:3187:: with SMTP id i7mr15620294lfe.101.1587518706180; Tue, 21 Apr 2020 18:25:06 -0700 (PDT) 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 > > However, that might have been done already. ;-} I'm still learning the features of my new scope. I started out with an old analog 40MHz, which without a capture feature makes it hard to diagnose something like this. I recently purchased a digital storage scope, the Rigol DS1054Z upgraded to 100MHz, but I'm still not up to speed yet. Honestly, before it was mentioned in this thread, I hadn't even considered the source voltage dropping below the regulators output, which was a face - palm moment. --=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 .