Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w3BM2aGU032479 for ; Thu, 12 Apr 2018 00:02:39 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1f6Nje-0006vN-8E for rs_out_1@blacksheep.org; Wed, 11 Apr 2018 22:56:58 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1f6NiT-0006vE-FB for rsgb_lf_group@blacksheep.org; Wed, 11 Apr 2018 22:55:45 +0100 Received: from mail-wr0-x234.google.com ([2a00:1450:400c:c0c::234]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1f6NiO-00015J-Pv for rsgb_lf_group@blacksheep.org; Wed, 11 Apr 2018 22:55:42 +0100 Received: by mail-wr0-x234.google.com with SMTP id d1so3156919wrj.13 for ; Wed, 11 Apr 2018 14:55:40 -0700 (PDT) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:message-id:to:subject:in-reply-to:references:mime-version :content-transfer-encoding; bh=wrMNFSCjQbsGnovtK9hOhkWRTLu+Xv287rYpmi8fwsQ=; b=Fr9Cd+4RYzgL//VhaveUyNG4k0R6E4ZDdj5AiO+Kkckq76ZCRC/QSifP1TqRFxlhao VYRbsy+kLx/29qWqTeE5czRmzbwU0gO+qDSQr6CiHqgAm7exKUXHrFC8Hx39t+2dcDPm 0zZCZ7BSKBFc++AleTJQjvzv3ErVqbxsyaHpluCh1LrhyKClBXt6rE1PlqV7AucuRECJ ahTtzHgVl2L46dEkv04a2QoK6gaYk6821kQv9B5umfXBZOGksIDhZZOTVoVjaY8dKrnD WecBrAhgqLR5bRI+UO7Y1H/s2Qx9bKrPxqwjb4O96grpTPtlMnKP3GYC1xLeUmJtNdUi 4fpg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:message-id:to:subject:in-reply-to :references:mime-version:content-transfer-encoding; bh=wrMNFSCjQbsGnovtK9hOhkWRTLu+Xv287rYpmi8fwsQ=; b=arbyQhKVtIL7hToEimktCH32/KzfbV1UTvMCHdF7nzR4+iJ3u6x11iRjPpOzwiF7mx OvS3nmP/zUuAlsQOkoiBRawu93qaKkQ2J2s7Vq5lXvb61h05EkYEWUkoaDPEuGXU+bgN jjSXyGBnCHsyE3Fn3xwdjFKEoJBgG5HQ7xB2QMCbxKGDiqSyUaDzVT79CajPkLBHHltH E2242yW/Pt59qkaOTH939pIZ/N5kXubBYRa61xKY+qsxe7623G4lfawvI0ZSkGM+R2Ox Gmde4KSP1RiIGt7PYx0vauu8MRhGozZekujKAe4yjnNTvbyMFgEuV4nVmh5D7uc5fDn4 fJEg== X-Gm-Message-State: ALQs6tDouw2P/t18Um2rwZcR5n8eoeeb+SPdfF4Src41XkdO8loCetgD bC+Y553uvVglEAhIuA8+I1VYGg== X-Google-Smtp-Source: AIpwx4/unZLTtZE7EbqFm3k+1+BTOpTgA2AsgmsUryM15F0AT/E6Kmug6s70eek2rADGB6bHbc5+JQ== X-Received: by 10.223.226.205 with SMTP id d13mr4760127wrj.152.1523483739129; Wed, 11 Apr 2018 14:55:39 -0700 (PDT) Received: from OfficeWin7.lan (82-70-254-222.dsl.in-addr.zen.co.uk. [82.70.254.222]) by smtp.gmail.com with ESMTPSA id y100sm552479wmh.2.2018.04.11.14.55.38 (version=TLS1 cipher=AES128-SHA bits=128/128); Wed, 11 Apr 2018 14:55:38 -0700 (PDT) Date: Wed, 11 Apr 2018 22:55:37 +0100 From: Chris Wilson X-Priority: 3 (Normal) Message-ID: <612685899.20180411225537@gmail.com> To: N1BUG In-Reply-To: References: <1UQRRBrZ33.5N62o0UWd72@optiplex980-pc> <5a4a2419-c192-d615-4ad2-bc6bd3f576ec@n1bug.com> <1UQRS7hUUP.4XeOGcYqkSd@optiplex980-pc> <765412878.20180411124016@gmail.com> <1b2b034a-404d-8b95-220c-5568950a1918@n1bug.com> <1523452469895.92892@kuleuven.be> <8c1acac6-e271-6398-2768-481298344387@n1bug.com> <1523457751831.88599@kuleuven.be> MIME-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hello Paul, back from the pub talk now, wind the damned thing up, and see what happens! ;) Maybe the `scope is giving pessimistic info, you seem to have covered everything else. A box of shrapnel like FET's is a badge of honour.... As is an impromptu fire to show commitment to LF [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (dead.fets[at]gmail.com) 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 046f068074e745d5c60ca47deee9b503 Subject: Re: LF: W1VD amp help - more waveforms Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=PRIORITY_NO_NAME 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 Hello Paul, back from the pub talk now, wind the damned thing up, and see what happens! ;) Maybe the `scope is giving pessimistic info, you seem to have covered everything else. A box of shrapnel like FET's is a badge of honour.... As is an impromptu fire to show commitment to LF Wednesday, April 11, 2018, 10:26:07 PM, you wrote: > Hi Rik, > I don't recall that having been mentioned previously in this > discussion. I am sure I have read that somewhere in my studies over > the past year but it obviously had not taken root as it seemed all > new to me when I read your message today. :-) Your explanation of > how the resistor and diode work is helpful. > Today's experiments to update those who are following this story: > I moved the driver board so the gate leads are much shorter. I used > thicker wire for the gate leads. Result: absolutely no change. > At Jay's suggestion I put additional 1000pf caps in a parallel with > the existing 1000pf timing caps on the driver board. Result: no > change that I can be certain of. If anything, the timing could be > just a tiny bit *worse* than before but this might be just my eyes > playing tricks. > Paul -- Best regards, Chris mailto:dead.fets@gmail.com