Return-Path: Received: (qmail 9976 invoked from network); 16 Mar 2003 18:36:25 -0000 Received: from netmail01.services.quay.plus.net (212.159.14.219) by mailstore with SMTP; 16 Mar 2003 18:36:25 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 7299 invoked by uid 10001); 16 Mar 2003 18:36:25 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from post.thorcom.com (193.82.116.70) by netmail01.services.quay.plus.net with SMTP; 16 Mar 2003 18:36:24 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.12) id 18ucyl-0005Hr-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 16 Mar 2003 18:35:27 +0000 Received: from [165.212.11.112] (helo=cmsrelay03.mx.net) by post.thorcom.com with smtp (Exim 4.12) id 18ucyb-0005Hi-00 for rsgb_lf_group@blacksheep.org; Sun, 16 Mar 2003 18:35:18 +0000 Received: from cmsapps02.cms.usa.net (HELO localhost) (165.212.11.138) by cmsoutbound.mx.net with SMTP; 16 Mar 2003 18:35:07 -0000 Received: from usa.net [80.104.11.130] by cmsapps02.cms.usa.net (ASMTP/dibene@usa.net) via mtad (C8.MAIN.2.05) with ESMTP id 038HcPsjB0229M38; Sun, 16 Mar 2003 18:35:02 GMT Message-ID: <3E74C32D.8020709@usa.net> Date: Sun, 16 Mar 2003 19:32:13 +0100 From: "Alberto di Bene" User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.0.2) Gecko/20030208 Netscape/7.02 X-Accept-Language: en-us, en MIME-Version: 1.0 To: "LF Mailing List" Subject: LF: Playing with Pspice Content-Type: multipart/mixed; boundary="------------010606020906010300050509" X-Spam-Status: No, hits=-2.5 required=5.0tests=HTML_40_50,HTML_IMAGE_AREA_05,HTML_IMAGE_ONLY_06, HTML_IMAGE_RATIO_02,HTML_MESSAGE,MIME_HTML_ONLY, USER_AGENT_MOZILLA_UAversion=2.50 X-Spam-Checker-Version: SpamAssassin 2.50 (1.173-2003-02-20-exp) X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rsgb_lf_group-outgoing@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false This is a multi-part message in MIME format. --------------010606020906010300050509 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: 8bit Hi all,
today I fired up Pspice, just to see if I remembered how to use
it, and somehow came up with a lowpass circuit for 137 Khz, which
uses standard value components, and has 50 ohm input and output
impedance. It is flat from 0 to 138 kHz, and exhibits about 60 dB
of attenuation at 300 kHz.

In case someone is interested, here is the schematic and the
Bode plot, also with a couple of cursors to measure the
attenuation values.

73 Alberto I2PHD

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