Return-Path: Received: (qmail 8987 invoked from network); 17 Sep 2002 13:12:29 -0000 Received: from murphys.services.quay.plus.net (212.159.14.225) by mailstore with SMTP; 17 Sep 2002 13:12:29 -0000 Content-Transfer-Encoding: 8bit Received: (qmail 12889 invoked from network); 17 Sep 2002 13:12:30 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from post.thorcom.com (193.82.116.70) by murphys.services.quay.plus.net with SMTP; 17 Sep 2002 13:12:30 -0000 X-SQ: A X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 4.10) id 17rI8G-0000qu-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 17 Sep 2002 14:11:12 +0100 Received: from [147.197.200.9] (helo=hestia.herts.ac.uk) by post.thorcom.com with esmtp (Exim 4.10) id 17rI8F-0000qk-00 for rsgb_lf_group@blacksheep.org; Tue, 17 Sep 2002 14:11:11 +0100 Received: from gemini ([147.197.200.44] helo=gemini.herts.ac.uk) by hestia.herts.ac.uk with esmtp (Exim 3.22 #1) id 17rI6x-0005dd-00 for rsgb_lf_group@blacksheep.org; Tue, 17 Sep 2002 14:09:51 +0100 Received: from [147.197.232.252] (helo=rsch-15.herts.ac.uk) by gemini.herts.ac.uk with esmtp (Exim 3.33 #1) id 17rI6v-0007GP-00 for rsgb_lf_group@blacksheep.org; Tue, 17 Sep 2002 14:09:49 +0100 Message-ID: <5.1.0.14.0.20020917132427.00af1290@gemini.herts.ac.uk> X-Sender: mj9ar@gemini.herts.ac.uk X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Tue, 17 Sep 2002 14:09:48 +0100 To: rsgb_lf_group@blacksheep.org From: "James Moritz" In-reply-to: <3D870F91.6010703@usa.net> References: <3A5B37BB.11936.1878C3D@localhost> <5.1.0.14.0.20020916180814.00b02648@gemini.herts.ac.uk> MIME-Version: 1.0 X-MailScanner: No Virus detected Subject: Re: LF: PSpice question Content-Type: text/plain; charset=us-ascii; format=flowed X-Spam-Status: No, hits=-4.1 required=5.0tests=IN_REP_TO,DEAR_SOMEBODYversion=2.31 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Dear Alberto, LF Group, At 13:18 17/09/2002 +0200, you wrote: >PSpice seems to be a powerful tool, albeit with some quirks, i.e. it does >not recognize (my version at least) the capital >letter M as a prefix for Mega... I had inserted a resistor of 1M, only to >have a few femtovolt across it. >When I changed it to 1e6, everything was ok. Probably it interpreted the >1M as one milliohm... may be they need a refresh >on the MKS system... Although the graphical schematic editor recognises upper and lower case, the actual Spice simulator is not case sensitive, so both m and M are recognised as "milli". You can use "meg" for mega, eg. 2.2meg, or the exponential notation 2.2e6. Also, it does not understand notation like 4k7, which it will interpret as 4k - you have to put 4.7k I hesitate to try and make explanations about software to Alberto, but as I understand it PSpice and similar simulators are essentially just graphical front- and back ends for modified versions of the University of Berkeley's Spice simulator programs, which has a long history going back to punched card data input to computers - so it certainly has a few quirks! Cheers, Jim Moritz 73 de M0BMU