[133097] in North American Network Operators' Group
Re: Want to move to all 208V for server racks
daemon@ATHENA.MIT.EDU (Gary Buhrmaster)
Sat Dec 4 10:52:02 2010
In-Reply-To: <121C9CDD-FD69-41D6-B0A0-EEAC1C7F50FC@delong.com>
Date: Sat, 4 Dec 2010 07:51:52 -0800
From: Gary Buhrmaster <gary.buhrmaster@gmail.com>
To: Owen DeLong <owen@delong.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Fri, Dec 3, 2010 at 22:28, Owen DeLong <owen@delong.com> wrote:
> ... This is easily done with AC and would be quite complex
> and inefficient (especially with the technology available at the time this
> decision was made) with DC.
Correct. Now, of course, with switched mode conversion
and power FET technology DC-to-DC converter efficiency
can be greater than 95% in optimized designs, but back
when Edison and Tesla were arguing the merits, DC
conversion was very inefficient compared to AC.
