From owner-freebsd-chat@freebsd.org Sun Nov 22 09:35:16 2020 Return-Path: Delivered-To: freebsd-chat@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 99AD72EADF7 for ; Sun, 22 Nov 2020 09:35:16 +0000 (UTC) (envelope-from silver.bullet@zoho.com) Received: from sender4-pp-o94.zoho.com (sender4-pp-o94.zoho.com [136.143.188.94]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4Cf4rg1YNkz4mwm for ; Sun, 22 Nov 2020 09:35:14 +0000 (UTC) (envelope-from silver.bullet@zoho.com) ARC-Seal: i=1; a=rsa-sha256; t=1606037711; cv=none; d=zohomail.com; s=zohoarc; b=F2NM3X0JSd98SMnoZaxRVXZzzqlZz/UKyLJCodPsMsPkkdu37l3HAwM/o7gVqh0igT5iFGwLscs4P3DtANBL+12hm9UZ9/+flT2CTkgIWq2JgjBfVunygz7qNFoIpwfT+KCNWIG6j/L98UmDxJpxTBXSs3SYhzOegR9l/2kYZv4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1606037711; h=Content-Type:Content-Transfer-Encoding:Date:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:To; bh=2wkdRoK2cYP9PtBOpBTpslkEfn43yrx0/NPZwDl2x0g=; b=YfA3amj5LVXTM8yjvKcibnTOAvFh0xjVUT43uD7Vq6kkbMqY49WtQwvMWhW4qdVvTdFua085ID0xj68KCn8J1pwdifVm1SWxTWiQY5zfpaiR2uCzlT7ljIhRm9Mefju9qJReN2cZVOgQKlmJaSkuD1TE8N/JQoBKQVE28qX77nk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=zoho.com; spf=pass smtp.mailfrom=silver.bullet@zoho.com; dmarc=pass header.from= header.from= Received: from utnubu (dynamic-002-244-073-214.2.244.pool.telefonica.de [2.244.73.214]) by mx.zohomail.com with SMTPS id 16060377080821002.6698860444503; Sun, 22 Nov 2020 01:35:08 -0800 (PST) Date: Sun, 22 Nov 2020 10:35:17 +0100 From: Ralf Mardorf To: freebsd-chat@freebsd.org Subject: Re: Sustainability of switching power supplies Message-ID: <20201122103517.2487bf60@utnubu> In-Reply-To: <202011220030.RAA29768@mail.lariat.net> References: <20201121092444.2355c5a7@utnubu> <202011220030.RAA29768@mail.lariat.net> X-Mailer: Claws Mail (linux) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-ZohoMailClient: External X-Rspamd-Queue-Id: 4Cf4rg1YNkz4mwm X-Spamd-Bar: -- X-Spamd-Result: default: False [-2.49 / 15.00]; XM_UA_NO_VERSION(0.01)[]; FREEMAIL_FROM(0.00)[zoho.com]; R_SPF_ALLOW(-0.20)[+ip4:136.143.188.0/24]; TO_DN_NONE(0.00)[]; DKIM_TRACE(0.00)[zoho.com:+]; DMARC_POLICY_ALLOW(-0.50)[zoho.com,reject]; RECEIVED_SPAMHAUS_PBL(0.00)[2.244.73.214:received]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[zoho.com]; ASN(0.00)[asn:2639, ipnet:136.143.188.0/23, country:US]; RBL_DBL_DONT_QUERY_IPS(0.00)[136.143.188.94:from]; ARC_ALLOW(-1.00)[zohomail.com:s=zohoarc:i=1]; DWL_DNSWL_NONE(0.00)[zoho.com:dkim]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[zoho.com:s=zm2020]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; NEURAL_SPAM_SHORT(1.00)[1.000]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[136.143.188.94:from:127.0.2.255]; RCVD_IN_DNSWL_NONE(0.00)[136.143.188.94:from]; MID_RHS_NOT_FQDN(0.50)[]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-chat] X-BeenThere: freebsd-chat@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Non technical items related to the community List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 22 Nov 2020 09:35:16 -0000 On Sat, 21 Nov 2020 17:30:08 -0700, Brett Glass wrote: >At 01:24 AM 11/21/2020, Ralf Mardorf via freebsd-chat wrote: > >That's why Glass's Law of Electronic Diagnosis states: Whenever you >are asked about the failure of an electronic device, simply say, "It's >the power suppply." > >You will be correct about 99% of the time That's exactly my experiences with gear using switching power supplies, but not with gear using classic power supplies. And yes, when I ask for "sustainability" everything should be taken into account. The better efficiency, but also other variables, such as special waste, if the device is borked.