Received: from PCH.mit.edu (18.7.21.50) by mail.efplus.com (192.168.0.8) with Microsoft SMTP Server (TLS) id 8.3.485.1; Sat, 17 Jul 2021 03:58:40 -0700 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 16HAmVFU024845; Sat, 17 Jul 2021 06:49:27 -0400 Received: from outgoing-exchange-1.mit.edu (OUTGOING-EXCHANGE-1.MIT.EDU [18.9.28.15]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 16HAmUNt024828 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Sat, 17 Jul 2021 06:48:30 -0400 Received: from oc11exedge1.exchange.mit.edu (OC11EXEDGE1.EXCHANGE.MIT.EDU [18.9.3.17]) by outgoing-exchange-1.mit.edu (8.14.7/8.12.4) with ESMTP id 16HAmGMv007073 for ; Sat, 17 Jul 2021 06:48:29 -0400 Received: from w92expo29.exchange.mit.edu (18.7.74.41) by oc11exedge1.exchange.mit.edu (18.9.3.17) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Sat, 17 Jul 2021 06:48:30 -0400 Received: from w92exhyb3.exchange.mit.edu (18.7.71.73) by w92expo29.exchange.mit.edu (18.7.74.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 17 Jul 2021 06:48:28 -0400 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (104.47.55.170) by w92exhyb3.exchange.mit.edu (18.7.71.73) with Microsoft SMTP Server (TLS) id 15.0.1497.18 via Frontend Transport; Sat, 17 Jul 2021 06:48:28 -0400 Received: from MWHPR13CA0048.namprd13.prod.outlook.com (2603:10b6:300:95::34) by DM6PR01MB5451.prod.exchangelabs.com (2603:10b6:5:17f::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4331.21; Sat, 17 Jul 2021 10:48:27 +0000 Received: from CO1NAM11FT047.eop-nam11.prod.protection.outlook.com (2603:10b6:300:95:cafe::81) by MWHPR13CA0048.outlook.office365.com (2603:10b6:300:95::34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4352.8 via Frontend Transport; Sat, 17 Jul 2021 10:48:27 +0000 Received: from vps2.arocholl.com (204.197.252.118) by CO1NAM11FT047.mail.protection.outlook.com (10.13.174.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4331.21 via Frontend Transport; Sat, 17 Jul 2021 10:48:27 +0000 Received: from [82.213.204.18] (port=29686 helo=[192.168.1.124]) by vps2.arocholl.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94.2) (envelope-from ) id 1m4hrv-0002lO-5z for piclist@mit.edu; Sat, 17 Jul 2021 12:48:27 +0200 From: "foros@arocholl.com" To: "piclist@mit.edu" Sender: "piclist-bounces@mit.edu" Date: Sat, 17 Jul 2021 03:48:25 -0700 Subject: Re: [EE] Redundant PSU for critical NAS server Thread-Topic: [EE] Redundant PSU for critical NAS server Thread-Index: Add6+rQc85sYL1pKTGGwKriaewLjqA== Message-ID: <0a98955a-0512-c600-c450-bb8a84897206@rf-explorer.com> References: <2fd4df00967f3c7f872cc7c87c6cc133.squirrel@mai.hallikainen.org> <20210712200859.60c4f038@raspberry> <0e7cd82f0e56339f242905e526fb401f.squirrel@mai.hallikainen.org> <570ef2ce-d4fe-1684-780e-b2c657d63016@rf-explorer.com> <164e949b-6790-2be1-db94-b3dca8454463@celestialaudio.com> List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: <164e949b-6790-2be1-db94-b3dca8454463@celestialaudio.com> 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: received-spf: Pass (protection.outlook.com: domain of arocholl.com designates 204.197.252.118 as permitted sender) receiver=protection.outlook.com; client-ip=204.197.252.118; helo=vps2.arocholl.com; dkim-signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=rf-explorer.com; s=default; h=Content-Type:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Sender:Reply-To:Cc: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=C5hXvgwT2VlD9HH25Jk8/2IJsnHNdtbPzwFAoNEWGfU=; b=3B6KhafE+sTLQcuKphTcrxVWCf OsoS0Hf8B/m6Kp2qP3u4lzbnpq2+nc1haXnZpeATGdoKrZiWYHocLCtIyj7iWLf+LoL1TdAiHZsjI RyPwiHdAouHk04a4k0eevFcJzyfVVsoOPCBGBEagik18XJMBnNE2MHa3MBKB5bptFPPSSOjpnGLBj qPKhYfIOTiGO8a/ZYC2tPwhuOAz294QlJKIqzLjU5xC83ksKvQwtlTcCf0pr9ZlQaLF++8V5u5pKh QiJx4ZhyWk1vhPyiOCKjeJfRTDZ9/Kg6nXA4xpYujH5WVVr/FU/+tQYC5pa//1YoCUDwQhWVItdEI f5RAHnKw==; authentication-results: spf=pass (sender IP is 204.197.252.118) smtp.mailfrom=arocholl.com; mit.edu; dkim=pass (signature was verified) header.d=rf-explorer.com;mit.edu; dmarc=pass action=none header.from=arocholl.com; user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 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-source-args: x-source-dir: x-antiabuse: Sender Address Domain - arocholl.com x-source: x-authenticated-sender: vps2.arocholl.com: arocholl@rf-explorer.com 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 It looks like in online docs "Diode-OR" is mostly used for logic=20 circuits, not power circuits, but I can see how this can be extended=20 easily for many purposes. "auctioneering diodes" seems to be used exclusively for power circuits. Cheers. Ariel On 7/14/2021 6:07 AM, Jesse Lackey wrote: > I have always heard diodes used in schemes like this to be a "Diode-OR" > circuit for DC power combining. FWIW. > J > > > foros@arocholl.com wrote: >> This is useful definition to know, I wasn't aware of the term >> "auctioneering diodes". A few very relevant docs show a design >> constraints to account for, just the kind of info I was after. >> >> Thanks >> >> Ariel >> >> On 7/12/2021 10:35 PM, Harold Hallikainen wrote: >>>> I've worked on a couple circuits that had multiple supplies. >>>> The term I heard used was "auctioneering diodes". >>>> A quick google gives ~10k hits and at least the first page seems relev= ant >>>> to the discussion. >>>> >>>> -Denny >>> Could the output diode in a typical flyback switcher serve as the >>> "auctioneering diode?" >>> >>> Harold >>> >>> >>> --=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 .