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; Mon, 7 Sep 2020 23:30:49 -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 0886LYs2005370; Tue, 8 Sep 2020 02:21:48 -0400 Received: from outgoing-exchange-7.mit.edu (OUTGOING-EXCHANGE-7.MIT.EDU [18.9.28.58]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 0886LVj6005365 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Tue, 8 Sep 2020 02:21:32 -0400 Received: from oc11exedge2.exchange.mit.edu (OC11EXEDGE2.EXCHANGE.MIT.EDU [18.9.3.18]) by outgoing-exchange-7.mit.edu (8.14.7/8.12.4) with ESMTP id 0886LPvD022665 for ; Tue, 8 Sep 2020 02:21:31 -0400 Received: from w92expo15.exchange.mit.edu (18.7.74.69) by oc11exedge2.exchange.mit.edu (18.9.3.18) with Microsoft SMTP Server (TLS) id 15.0.1293.2; Tue, 8 Sep 2020 02:21:11 -0400 Received: from oc11exhyb8.exchange.mit.edu (18.9.1.113) by w92expo15.exchange.mit.edu (18.7.74.69) with Microsoft SMTP Server (TLS) id 15.0.1365.1; Tue, 8 Sep 2020 02:21:28 -0400 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (104.47.55.172) by oc11exhyb8.exchange.mit.edu (18.9.1.113) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Tue, 8 Sep 2020 02:21:28 -0400 Received: from CO2PR04CA0142.namprd04.prod.outlook.com (2603:10b6:104::20) by MN2PR01MB5758.prod.exchangelabs.com (2603:10b6:208:17a::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.15; Tue, 8 Sep 2020 06:21:27 +0000 Received: from CO1NAM03FT033.eop-NAM03.prod.protection.outlook.com (2603:10b6:104:0:cafe::fd) by CO2PR04CA0142.outlook.office365.com (2603:10b6:104::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.16 via Frontend Transport; Tue, 8 Sep 2020 06:21:27 +0000 Received: from mail-ed1-f52.google.com (209.85.208.52) by CO1NAM03FT033.mail.protection.outlook.com (10.152.80.175) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.16 via Frontend Transport; Tue, 8 Sep 2020 06:21:26 +0000 Received: by mail-ed1-f52.google.com with SMTP id c8so14770352edv.5 for ; Mon, 07 Sep 2020 23:21:26 -0700 (PDT) From: Ryan O'Connor To: Microcontroller discussion list - Public. Sender: "piclist-bounces@mit.edu" Date: Mon, 7 Sep 2020 23:21:13 -0700 Subject: Re: [OT] World's brightest LED Thread-Topic: [OT] World's brightest LED Thread-Index: AdaFqZfQp6JC3fFcTXOQ3ob6XtjEOw== Message-ID: References: <0ee59b0a-2dda-5a4d-b738-fccd3062964d@gmail.com> List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: <0ee59b0a-2dda-5a4d-b738-fccd3062964d@gmail.com> 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: Pass (protection.outlook.com: domain of gmail.com designates 209.85.208.52 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.208.52; helo=mail-ed1-f52.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=KzaW7s2tCYNwdEwUhBATX1zScufin2I1DNkA774hpZA=; b=owhwT/3zJqXa/zpAqfPF6V9v4vloODBL79ExlKuwO3ti/lSf5hwmOpdH1B/08Wuc6o BRBf+nHOJPOowgX6BjAdxMyLN89uogoqbMTu51MyQTinRP/odVviS2ai99w1xf8OPJpa txRxSIJIjUFnRADbJnWfk1SWGCp7b3oclU3Oo6PvM6c3CU51SqjTapvoKVFVXzDqT8ck ecKlZjogOJ41KL0Y69eR7MAfeAFcwQMmD5Qvf7o0yWP87ZupmGcPg9UIPj3ER2IHi8jc keLpgkTQYYGwyhdbJ6iXqi4se/2MXIhh7NI2F692MfaKJOnkVNJmQlWqSy+Qt8+MrEJZ W9ug== authentication-results: spf=pass (sender IP is 209.85.208.52) smtp.mailfrom=gmail.com; mit.edu; dkim=pass (signature was verified) header.d=gmail.com; mit.edu; dmarc=pass action=none header.from=gmail.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:a50:dec9:: with SMTP id d9mr25724031edl.145.1599546084926; Mon, 07 Sep 2020 23:21:24 -0700 (PDT) x-topics: [OT] 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 Yeah true don't you need a special output stage on a constant current or mixed mode SMPS in order to do that? On Tue, 8 Sep 2020 at 17:27, Jim Ruxton wrote: > > > He (surprisingly) does not show what the beam is actually like. > > I didn't note any claims on lumen output, but it should be well over > > 100,000 lumen. > > > > Note to self: Find out brand of power supplies used and avoid buying > them. > > I doubt that these supplies are meant to be run in series the way he > connected them. > > jim > > -- > 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 .