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; Tue, 24 Nov 2020 20:14:36 -0800 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 0AP44Y2I029711; Tue, 24 Nov 2020 23:04:54 -0500 Received: from outgoing-exchange-5.mit.edu (OUTGOING-EXCHANGE-5.MIT.EDU [18.9.28.59]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 0AP44XZj029708 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Tue, 24 Nov 2020 23:04:33 -0500 Received: from w92exedge3.exchange.mit.edu (W92EXEDGE3.EXCHANGE.MIT.EDU [18.7.73.15]) by outgoing-exchange-5.mit.edu (8.14.7/8.12.4) with ESMTP id 0AP44Wh5010042 for ; Tue, 24 Nov 2020 23:04:33 -0500 Received: from w92expo17.exchange.mit.edu (18.7.74.71) by w92exedge3.exchange.mit.edu (18.7.73.15) with Microsoft SMTP Server (TLS) id 15.0.1293.2; Tue, 24 Nov 2020 23:04:07 -0500 Received: from oc11exhyb1.exchange.mit.edu (18.9.1.60) by w92expo17.exchange.mit.edu (18.7.74.71) with Microsoft SMTP Server (TLS) id 15.0.1365.1; Tue, 24 Nov 2020 23:04:32 -0500 Received: from NAM04-BN8-obe.outbound.protection.outlook.com (104.47.74.42) by oc11exhyb1.exchange.mit.edu (18.9.1.60) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Tue, 24 Nov 2020 23:04:32 -0500 Received: from BN6PR2001CA0024.namprd20.prod.outlook.com (2603:10b6:404:b4::34) by DM6PR01MB3804.prod.exchangelabs.com (2603:10b6:5:8d::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3589.28; Wed, 25 Nov 2020 04:04:31 +0000 Received: from BN8NAM11FT055.eop-nam11.prod.protection.outlook.com (2603:10b6:404:b4:cafe::c9) by BN6PR2001CA0024.outlook.office365.com (2603:10b6:404:b4::34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3611.20 via Frontend Transport; Wed, 25 Nov 2020 04:04:31 +0000 Received: from mail-pf1-f174.google.com (209.85.210.174) by BN8NAM11FT055.mail.protection.outlook.com (10.13.177.62) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3589.22 via Frontend Transport; Wed, 25 Nov 2020 04:04:30 +0000 Received: by mail-pf1-f174.google.com with SMTP id 131so1077478pfb.9 for ; Tue, 24 Nov 2020 20:04:30 -0800 (PST) Received: from esk (pa49-179-142-238.pa.nsw.optusnet.com.au. [49.179.142.238]) by smtp.gmail.com with ESMTPSA id x61sm711242pjj.4.2020.11.24.20.04.28 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 24 Nov 2020 20:04:28 -0800 (PST) Received: from james by esk with local (Exim 4.90_1) (envelope-from ) id 1khm2a-0003tM-80; Wed, 25 Nov 2020 15:04:24 +1100 From: James Cameron To: Microcontroller discussion list - Public. Sender: "piclist-bounces@mit.edu" Date: Tue, 24 Nov 2020 20:04:24 -0800 Subject: Re: [OT] Hyperikon Retrofit LED Tubes Without Ballast Thread-Topic: [OT] Hyperikon Retrofit LED Tubes Without Ballast Thread-Index: AdbC4XyScDgCtIpCS0OKDpc4SEIj4Q== Message-ID: <20201125040424.GL22162@laptop.org> References: List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: 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 laptop.org designates 209.85.210.174 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.210.174; helo=mail-pf1-f174.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=laptop-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=7Nh6PHAW/lWyn0row86PpyherWzz5TwCxLiyzSNIEQw=; b=GWli9v1CItsZmsy5haRex8sAYn5/5mb/srUVOv+9aPR5A3geUPBiUPHzkqVZywaBTM wEo6lBpoyRqUSHz/8eyqcrPt1FRNFoXWBsVk/zHU3KFteq/DUlsedm8YBPzt2R7DraPw k6BePlpFRBVZPSFTtqRl3N7scG3Q/bc6DYdE4hkptIBcMT2S7cEDr3AxHwbNIYcwJuwQ 7eeUzHaY9AhVsp5dwWbhi79zD0ZedfB9pdPooqoHzucdUNgXPZp5NCkL4WEd1fHl2hDu dKjEnnvTw2vkdsB//RXf7wZjJRLmRAeyRtFPriGkBS41H8/8SSNuqjRTcHtADPhvy3KJ +k0g== authentication-results: spf=pass (sender IP is 209.85.210.174) smtp.mailfrom=laptop.org; mit.edu; dkim=pass (signature was verified) header.d=laptop-org.20150623.gappssmtp.com; mit.edu; dmarc=bestguesspass action=none header.from=laptop.org; user-agent: Mutt/1.9.4 (2018-02-28) 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:a62:18c9:0:b029:197:e24e:60f2 with SMTP id 192-20020a6218c90000b0290197e24e60f2mr822294pfy.14.1606277069608; Tue, 24 Nov 2020 20:04:29 -0800 (PST) x-topics: [OT] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 I can't confirm the data you have on your product, but I've changed two fittings over to LED tubes and have another nine not yet changed. The change for my tubes was to wire 240V to each end of the tube, isolating the ballast and starter. I halted my upgrade because; * emission was not omnidirectional; with slanted white ceilings and the fittings suspended about 500mm below them, it felt oppressive not to have the ceiling lit, * total lumens emitted to the floor area was not as great, * the colour rendering index was poor. Then I overspecified on solar panels and battery to compensate. ;-) --=20 James Cameron http://quozl.netrek.org/ --=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 .