Return-Path: Received: from mtain-mh10.r1000.mx.aol.com (mtain-mh10.r1000.mx.aol.com [172.29.96.222]) by air-mb07.mail.aol.com (v126.13) with ESMTP id MAILINMB074-a7a84b5eed31362; Tue, 26 Jan 2010 08:25:05 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mh10.r1000.mx.aol.com (Internet Inbound) with ESMTP id 7BFD1380000B3; Tue, 26 Jan 2010 08:25:03 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NZlNl-0000AL-6S for rs_out_1@blacksheep.org; Tue, 26 Jan 2010 13:23:01 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NZlNk-0000AC-S3 for rsgb_lf_group@blacksheep.org; Tue, 26 Jan 2010 13:23:00 +0000 Received: from cmsout02.mbox.net ([165.212.64.32]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NZlNi-0000He-UY for rsgb_lf_group@blacksheep.org; Tue, 26 Jan 2010 13:23:00 +0000 Received: from cmsout02.mbox.net (co02-lo [127.0.0.1]) by cmsout02.mbox.net (Postfix) with ESMTP id 3C5CC13411C for ; Tue, 26 Jan 2010 13:22:51 +0000 (GMT) Received: from cmsapps02.cms.usa.net [165.212.11.138] by cmsout02.mbox.net via smtad (C8.MAIN.3.61A) with ESMTP id XID498oaZNwz8086X02; Tue, 26 Jan 2010 13:22:51 -0000 X-USANET-Source: 165.212.11.138 IN dibene@usa.net cmsapps02.cms.usa.net X-USANET-MsgId: XID498oaZNwz8086X02 Received: from [192.168.1.3] [151.47.221.72] by cmsapps02.cms.usa.net (ESMTPA/dibene@usa.net) via mtad (C8.MAIN.3.53P) with ESMTPA id 224oaZNwY4272M38; Tue, 26 Jan 2010 13:22:50 -0000 X-USANET-Auth: 151.47.221.72 AUTH dibene@usa.net [192.168.1.3] Message-ID: <4B5EECA7.6060702@usa.net> Date: Tue, 26 Jan 2010 14:22:47 +0100 From: Alberto di Bene User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.7) Gecko/20100111 Thunderbird/3.0.1 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <5A430FD7C1764930A931D68A9C674CB8@ns94d01ae4d850> <4B5C8852.8050604@mail.ru> <38A51B74B884D74083D7950AD0DD85E82A1AAA@File-Server-HST.hst.e-technik.tu-darmstadt.de> <38A51B74B884D74083D7950AD0DD85E82A1AAB@File-Server-HST.hst.e-technik.tu-darmstadt.de> In-Reply-To: <38A51B74B884D74083D7950AD0DD85E82A1AAB@File-Server-HST.hst.e-technik.tu-darmstadt.de> X-Enigmail-Version: 1.0 Z-USANET-MsgId: XID224oaZNwY4272X38 X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: low noise OPAs and Transistors Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G x-aol-sid: 3039ac1d60de4b5eed2f2202 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) On 1/26/2010 2:24 AM, Stefan Sch=E4fer wrote: > Dear Group, > > I just study some interesting articles about low noise transistors and= OPAs for amplifier applications and found that article very interesting: > > http://www.janascard.cz/PDF/Ultra%20low%20noise%20amplifiers.pdf > > Perhaps it is interesting for some of you as well... > > 73, Stefan/DK7FC > Thanks Stefan, very interesting if one has to build a low noise loop preamplifier (as= I have...:-) 73 Alberto I2PHD