Date: Sat, 29 Nov 2014 11:16:46 +0100 From: Ralf Mardorf <ralf.mardorf@rocketmail.com> To: freebsd-questions@freebsd.org Subject: Re: [Bulk] Re: OT: UPS for FreeBSD Message-ID: <20141129111646.5c32dccd@archlinux> In-Reply-To: <54798883.saa13h6lE6rPwZCf%perryh@pluto.rain.com> References: <CAHieY7QGp2ELF-R91eu=vSrPsimVmVNJQ4kfucQ56PR7EEZmig@mail.gmail.com> <m57qdq$did$1@ger.gmane.org> <54777AB1.9010800@bluerosetech.com> <m581p1$65m$1@ger.gmane.org> <54779629.302@bluerosetech.com> <alpine.BSF.2.11.1411271433320.60866@wonkity.com> <5478BD4F.7020306@yahoo.com> <5478BEE6.30308@bluerosetech.com> <5478CC08.9090307@yahoo.com> <20141128204722.561f948e@archlinux> <5478F16A.80605@yahoo.com> <CABhTyc9m7fOoeV170dj=foAhmyYWphzc8KD8wBacu5gNRPhT%2BQ@mail.gmail.com> <54791d3a.w/pI0kak03d%2B3nKC%perryh@pluto.rain.com> <CAHu1Y71vVbdx6Yd1VbE7kb_8k9O5UG93RXEaORPU0tULCpMsCQ@mail.gmail.com> <20141129113405.3d1bd1d6@X220.alogt.com> <54798883.saa13h6lE6rPwZCf%perryh@pluto.rain.com>
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On Sat, 29 Nov 2014 00:49:07 -0800 perryh@pluto.rain.com (Perry Hutchison) wrote: > multitapped > 120VAC ==> step-down ==> 6VAC ==> full-wave ==> ~15VDC ==> battery1 > transformer rectifier > | > +---> 3VAC ==> full-wave ==> ~7.5VDC ==> battery2 > rectifier Now I'm confused. The ratio should be around 1.41, the square root of 2 "-" 1.5V assumed it's a diode bridge rectifier. E.g. 10 VAC * 1,41 = 14,1 14,1 - 1,5 = 12,6 VDC *?*
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