Return-Path: Received: (qmail 19763 invoked from network); 1 Feb 2001 11:45:26 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by extortion.plus.net with SMTP; 1 Feb 2001 11:45:26 -0000 Received: (qmail 13116 invoked from network); 1 Feb 2001 11:48:17 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 1 Feb 2001 11:48:17 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 14OI6Q-0002Xv-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 01 Feb 2001 11:40:38 +0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from gadolinium.btinternet.com ([194.73.73.111]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 14OI6P-0002Xq-00 for rsgb_lf_group@blacksheep.org; Thu, 01 Feb 2001 11:40:37 +0000 Received: from [213.1.108.115] (helo=host213-1-108-115.btinternet.com) by gadolinium.btinternet.com with smtp (Exim 3.03 #83) id 14OI6B-0005Jp-00 for rsgb_lf_group@blacksheep.org; Thu, 01 Feb 2001 11:40:24 +0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 From: "Nick" To: rsgb_lf_group@blacksheep.org Subject: Re: LF: RE: 3C85 Material: Obsolete? Date: Thu, 01 Feb 2001 11:39:22 +0000 Message-ID: References: <65AECDF1F89AD411900400508BFC869F0D7581@pdw-mail-1.dera.gov.uk> In-reply-to: <65AECDF1F89AD411900400508BFC869F0D7581@pdw-mail-1.dera.gov.uk> X-Mailer: Forte Agent 1.8/32.548 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: On Wed, 31 Jan 2001 14:55:04 -0000, you wrote: >As part of a project for the other end of the spectrum, I'm in the >process of designing a 300 - 400W SMPSU for converting a 12V car battery >supply to 28V so will be looking into similar sized cores as needed for >137kHz kW systems. How about a second car battery in series?? You can add a small invertor to charge it off the original is you want long term operation with the engine running. Nick