From owner-freebsd-questions@FreeBSD.ORG Fri Nov 28 19:25:05 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id BF9A18CF for ; Fri, 28 Nov 2014 19:25:05 +0000 (UTC) Received: from nm45-vm8.bullet.mail.bf1.yahoo.com (nm45-vm8.bullet.mail.bf1.yahoo.com [216.109.115.79]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 645D2922 for ; Fri, 28 Nov 2014 19:25:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1417202697; bh=tdbiHZY67bp0naxOghSeDFvQcjvC4qA4nzhFh6RElFg=; h=Date:From:To:Subject:References:In-Reply-To:From:Subject; b=qYDygTlEKEuqfiB+jMHEd6o+d5n+7kQ4aHwzGK7T3/0/3dFQGnMrT4wjd6Q7IqdoV9JcY+hCx0KWoaV9QYl9kEirV6GcQSJ25hAhrvcRjee8RDDwimCtFv/5ncNJdCt6/PZeH81NlyAsLYjHxcEzXexNQdtLPiXOV4nSsh2seZ9tbtC1z4aH19UPAJe3ZIIH8CC4M9p7MhtfLbyUJ31uBYAf213Ug0q9jE0tnvdlfDLPvDhD711ERmbszu2VGsMHnE/KeBJl2ku8L9HOuGgoeWBBlKNaa65wC6Op7W8Sah565Mwtrk86ohureVSWUbudCh1w/sKfz400CBTFH3WiFA== DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s2048; d=yahoo.com; b=R1vhGc4eH1Z6DKSoSQrwcnLj/fGwumbf7hIREVN8EzQ2+An7KBO/4qOY/nkvpIYom+wXBlw/NaI9LK9uYovDdhoefMBZS9Rmxg4/XhcZZSPTCfH7ZwYQzc4vsG7mt142k485yEtg0ln673Y3zBlBlNny+CbyJKwRKLw7ZbvqXwyz/4UrGFoOlom6OL3kLZuZy4P4iMhTuvqRHTPGY3b7HRxUy9mmbG7iVV8xH8RPl4cTW/oy/KTkpJb67e6GstndI/IqyL3wKAJz7FtAbQEDwsIjKqTiPOLnFHPEE1c1yYDKwyXl7M+WX3Nkn2UkG8UuigOLXHvBrbFvWVbxw6BjuQ==; Received: from [98.139.215.141] by nm45.bullet.mail.bf1.yahoo.com with NNFMP; 28 Nov 2014 19:24:57 -0000 Received: from [98.139.211.202] by tm12.bullet.mail.bf1.yahoo.com with NNFMP; 28 Nov 2014 19:24:57 -0000 Received: from [127.0.0.1] by smtp211.mail.bf1.yahoo.com with NNFMP; 28 Nov 2014 19:24:57 -0000 X-Yahoo-Newman-Id: 365744.62504.bm@smtp211.mail.bf1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: Srq4ed0VM1miT6XEAFidBT5MI2mtzchvzkePT7wf16J0.f4 GdPZFwt50.kW1oWE0OB_lTY6x159H_Hgvrbb9YeddXrQDslJIOX1oX5a5JNe 5emt3S7eWuSmb5bjEucOX3dt..aNdAd0okJ1hPy9jTnlLgaCSat5iXgoKbAr 74r8sR98.gJ2h0r0.h624OigvCr.sxBCI_8TyglaA_NAp2sanpIfjP6Q9pwe 9juDbcgFgFi2ngmIXUUhU.6ssRZ5975fCbhD9CcFTDRIoZy0VABF22pbOG3a aaUE_DbBIjCPGqg_Djq5F0H1zFotUZv32hw4fJaMCPJvSsx9jMN.kXvHpajY ipbkwbc2.qD1yO8cXuF6zs77dn106N9d8Ktg3SlExTm_VxcTxi3renfjbjtb VPup4bDcBr7wx.3jkx6i9UlSpQXtzfJ_jQ1FAkWhrkojndc_3vaUsFKlNTfj U0AVpGH4nMP_tqZQLpRa9LbUyyUiZPzUN32OFRMSqbDJAAF9mjzq2QQqkLM7 Bz9qiX42a7Atgbf9Wvg8luj.mHOL1oYo- X-Yahoo-SMTP: h3Xqg6.swBC0yI913RMMwp94grO_cg-- Message-ID: <5478CC08.9090307@yahoo.com> Date: Fri, 28 Nov 2014 14:24:56 -0500 From: Paul Pathiakis User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 MIME-Version: 1.0 To: freebsd-questions@freebsd.org Subject: Re: UPS for FreeBSD References: <54777AB1.9010800@bluerosetech.com> <54779629.302@bluerosetech.com> <5478BD4F.7020306@yahoo.com> <5478BEE6.30308@bluerosetech.com> In-Reply-To: <5478BEE6.30308@bluerosetech.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Nov 2014 19:25:05 -0000 Darren, Sorry, haven't had an oscilloscope for a long time. :-( Also, you can't really measure double conversion sine on UPS, just what's output. The first conversion happens going from power to the internal circuitry in the UPS going from AC to DC. The second conversion happens going from internal DC to external AC. Yes, they are recyclable. You have to get to the recycle center, not throw them in the trash. I'm not trying to read between the lines. Anything that does not specifically say 'Double Sine Wave Conversion' is not; this is probably the safer bet. I would hope that any power coming out of any UPS is cleaner than whats coming over the miles of power lines to your building/outlet. However, when it spikes, browns out, etc (any fluctuation - major or minor) what's coming out of the unit at that point needs to be PFC at the level necessary to not damage the PSU or anything beyond it. That is the end of my input on this thread. It's become time consuming. I believe a lot of people get what I'm saying here. P. On 11/28/2014 13:28, Darren Pilgrim wrote: > On 11/28/2014 10:22 AM, Paul Pathiakis via freebsd-questions wrote: >> I agree with Warren on this, I've done the same. >> >> The only issue with this is the proper disposal of the old batteries. > > Lead-acid batteries are recyclable. > >> from their web site, under the SMT750 Features page: >> >> * Pure sine wave output on battery:Simulates utility power to provide >> the highest degree of compatibility for active PFC (power factor >> corrected) servers and sensitive electronics. >> >> "Simulates" utility power. This is the sneaky little bit of marketing. >> Saying it's sine output.... It is, but it's simulated. I've been roped >> in by the APC marketing machine previously. > > Rather than trying to read between the lines and conjecturing, hook > one up to an oscilloscope. It's a sine wave. The waveform I get out > of mine (I have whole lot of SMT-series units) is actually *cleaner* > than the mains power. >