Return-Path: Received: (qmail 26000 invoked from network); 9 Oct 2001 11:31:44 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 9 Oct 2001 11:31:44 -0000 Received: (qmail 8601 invoked from network); 9 Oct 2001 11:29:25 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 9 Oct 2001 11:29:25 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15quzb-0003ic-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 09 Oct 2001 12:24:11 +0100 Received: from rhenium.btinternet.com ([194.73.73.93] helo=rhenium) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15quza-0003iX-00 for rsgb_lf_group@blacksheep.org; Tue, 09 Oct 2001 12:24:10 +0100 Received: from [213.123.27.34] (helo=dave) by rhenium with smtp (Exim 3.22 #6) id 15quyv-00025D-00 for rsgb_lf_group@blacksheep.org; Tue, 09 Oct 2001 12:23:29 +0100 Message-ID: <000401c150b5$5d75fa00$221b7bd5@dave> From: "Dave Sergeant" To: rsgb_lf_group@blacksheep.org References: <002501c1500c$402cec00$9edcff3e@oemcomputer> Subject: LF: Re: Power Supply Date: Tue, 9 Oct 2001 12:25:26 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: >From Dave G3YMC G3KNU wrote: Hi, I am thinking of buying a new PSU, has anyone any experience with Switch Mode PSU's. I am using a Farnell G24-15A, 24V 15A switcher, which is quite quiet after the addition of a couple of decoupling caps between the outputs and case. Another supply I was thinking of using was terrible on a noise basis. I think you really need to test any psu for noise before committing yourself, and it does seem that the more expensive models are better. For high power use (I am not limited by my psu!) a switcher is more or less imperative, and there clearly are some quiet models if you can find them. 73s Dave G3YMC dsergeant@iee.org dsergeant@btinternet.com http://www.dsergeant.btinternet.co.uk