Return-Path: Received: (qmail 18411 invoked from network); 16 Mar 2001 15:14:58 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by 10.226.25.101 with SMTP; 16 Mar 2001 15:14:58 -0000 Received: (qmail 11642 invoked from network); 16 Mar 2001 15:14:55 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 16 Mar 2001 15:14:55 -0000 X-Priority: 3 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 14dvle-0002cz-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 16 Mar 2001 15:03:50 +0000 X-MSMail-Priority: Normal Received: from aurora.eexi.gr ([195.167.28.4]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 14dvlc-0002cu-00 for rsgb_lf_group@blacksheep.org; Fri, 16 Mar 2001 15:03:48 +0000 Received: from odin (ppp77.dialup.eexi.gr [195.167.28.141]) by aurora.eexi.gr (8.11.1/8.11.1) with SMTP id f2GF4AX29945 for ; Fri, 16 Mar 2001 17:04:10 +0200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Message-ID: <3.0.2.32.20010316160158.006f27f4@aurora.eexi.gr> X-Sender: sv1xv@aurora.eexi.gr X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.2 (32) Date: Fri, 16 Mar 2001 16:01:58 +0200 To: rsgb_lf_group@blacksheep.org From: "Costas Krallis" Subject: LF: Re: EF50 In-reply-to: <65AECDF1F89AD411900400508BFC869F9C03D2@pdw-mail-1.dera.gov .uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: At 08:37 16/03/2001 -0000, you wrote: > Amongst the mine of nostalgia out there, I there anyone who understands > valve circuit topology and can tell us if the circuit I described really > can be considered as a cascode but using just a single pentode. According to ye olde electronics textbooks, the cascode circuit is electrically equivalent to a pentode, having the advantage of the lower noise of the triode valve/tube. Costas +------------------------------------------------------------+ | Costas Krallis SV1XV * LOC KM18UA | | P.O.Box 3066 * E-Mail: sv1xv@eexi.gr | | GR-10210 Athens * PGP key: 0x3BDBBC34 | | GREECE * http://www.qsl.net/sv1xv/ | | * http://w4u.eexi.gr/~sv1xv/ | +------------------------------------------------------------+